​Biological Psychology – Historical Context of Psychological Disorders


What is the historical context of psychological disorders?


Answer:
In the past, individuals with psychological disorders were often persecuted, isolated, and confined to mental asylums. Many were subjected to treatments that would now be considered inhumane, cruel, brutal, and unethical.


Over time, significant changes have occurred in the understanding, treatment, and management of mental illness. Today, psychological disorders are recognised as legitimate health conditions, and treatment is based on ethical principles, scientific evidence, and respect for human rights.


⸻


How were individuals with mental illness treated in the past?


Answer:
Historically, people with mental illness were often:

• Hidden away in mental asylums.

• Socially isolated.

• Persecuted because of their condition.

• Subjected to treatments that would now be considered:

• Inhumane.

• Brutal.

• Reprehensible.

• Unethical.

These practices reflected the limited understanding of psychological disorders at the time.


⸻


How has the treatment of mental illness changed?


Answer:
Modern psychology has developed significantly.


Today:

• Professional psychological organisations have established codes of ethical conduct for research and clinical practice.

• Greater public awareness helps protect individuals from mistreatment.

• Mental illness is discussed more openly than in the past.

• Many treatments are now community-based, particularly for less severe psychological disorders.

• Psychopharmacology (treatment using medication) has improved the management of many mental illnesses.

These developments have contributed to more humane and effective care.


⸻


Is stigma towards mental illness still present?


Answer:
Yes. Although attitudes towards mental illness have improved significantly, stigma, prejudice, and discrimination still exist.


Many individuals with mental illness continue to report feelings of:

• Isolation.

• Social exclusion.

• Misunderstanding.

Media portrayals sometimes reinforce inaccurate stereotypes, although they have also increased public awareness of mental health issues.


⸻


How have views about mental illness changed over time?


Answer:
Society’s understanding of mental illness has changed considerably.


For example:

• Homosexuality was once incorrectly classified as a psychological abnormality in mainstream Western psychology.

• This view has since been rejected because it lacked scientific evidence and reflected cultural beliefs rather than psychological dysfunction.

This demonstrates that definitions of mental illness can change as scientific knowledge and societal attitudes develop.


⸻


Why are cultural differences important in understanding mental illness?


Answer:
Different cultures define and interpret mental illness in different ways.


Psychologists should recognise that:

• Cultural norms influence what is considered normal or abnormal behaviour.

• Definitions of mental illness vary across cultures and generations.

• Contemporary Western psychology represents only one perspective.

Psychologists should understand these differences without judging one cultural perspective as being superior to another.


⸻


How can psychology influence public opinion?


Answer:
Psychological research can influence how society understands mental illness.


Research findings may:

• Inform public opinion by increasing knowledge and reducing stigma.

• Misinform public opinion if findings are misunderstood, misrepresented, or inaccurately portrayed in the media.

Therefore, psychologists have a responsibility to communicate research accurately.


⸻


How did Comer (2007) define psychological abnormality?


Answer:
According to Comer (2007), psychological abnormality can be identified by four main characteristics:

• Deviance

• Behaviour differs from cultural norms and expectations.

• Distress

• The individual experiences significant emotional suffering.

• Dysfunction

• Behaviour interferes with normal daily functioning.

• Danger

• The individual may pose a danger to themselves or others.

These characteristics are commonly used when assessing psychological disorders.


⸻


Why is objectivity important when studying psychology?


Answer:
Psychology students should recognise that their own:

• Experiences.

• Attitudes.

• Beliefs.

• Personal values.

may influence how they interpret research and perceive individuals with psychological disorders.


When writing reports or essays, psychologists should:

• Remain objective.

• Support claims with scientific evidence.

• Avoid personal opinions and value judgements.

• Critically evaluate the available research.

⸻


What is the aim of studying biological psychology in relation to mental illness?


Answer:
The aim of studying Biological Psychology is to understand:

• How biological factors increase the risk of mental illness.

• How biological factors contribute to the development and symptoms of psychological disorders.

• How biological treatments help manage mental illness.

• How biological influences interact with psychological, social, and environmental factors.

This provides a more complete understanding of psychological disorders.


⸻


What are the key historical developments in psychology?


Answer (Note Form):


Historical Treatment

• Individuals were:

• Persecuted.

• Hidden in mental asylums.

• Subjected to inhumane treatments.

⸻


Modern Developments

• Ethical codes established.

• Greater protection for patients.

• Increased public awareness.

• Community-based treatment.

• Increased use of psychopharmacology.

• More open discussion of mental illness.

⸻


Stigma

• Reduced compared with the past.

• Still exists today.

• Many individuals continue to experience discrimination and isolation.

⸻


Cross-Cultural Differences

• Definitions of mental illness differ across cultures.

• Cultural norms influence diagnosis.

• Western psychology is one perspective among many.

⸻


Comer’s Definition of Psychological Abnormality

• Deviance.

• Distress.

• Dysfunction.

• Danger.

⸻


Critical Thinking

• Avoid value judgements.

• Use evidence to support conclusions.

• Remain objective.

• Recognise personal biases.

• Consider biological, psychological, social, and cultural influences.

⸻


Conclusion


The understanding and treatment of psychological disorders have changed dramatically throughout history. Individuals who were once persecuted, isolated, and subjected to inhumane treatment are now protected by ethical guidelines, treated within the community whenever possible, and supported through evidence-based psychological and biological interventions. Although stigma and discrimination have decreased, they continue to affect many individuals with mental illness. Definitions of psychological abnormality also vary across cultures and historical periods, highlighting the importance of considering cultural perspectives when studying mental health. Biological Psychology recognises that mental illness is influenced not only by biological factors, but also by psychological, social, environmental, and cultural influences. As psychology students, it is essential to evaluate research objectively, support conclusions with evidence, avoid value judgements, and adopt a biopsychosocial perspective when understanding and explaining psychological disorders.

Biological Psychology – Introduction to Psychological Abnormality
What is psychological abnormality?
Answer:
Psychological abnormality is one of the most widely studied areas in psychology and is a major focus within clinical and counselling psychology. It examines behaviours, emotions, and thoughts that differ from what is considered typical or healthy and seeks to understand their causes, diagnosis, and treatment.
Many students are interested in this field because psychological distress is common, and most people will either experience it themselves or know someone who has experienced a mental health problem during their lifetime.


Is abnormal behaviour studied only from a biological perspective?
Answer:
No. Although Biological Psychology focuses on biological explanations, abnormal behaviour is also studied from several other psychological perspectives.
These include:

• Biological Psychology
• Cognitive Psychology
• Developmental Psychology
• Humanistic Psychology
• Social Psychology

Each perspective offers a different explanation of how psychological disorders develop and how they can be treated.


What is the diathesis–stress model?
Answer:
The diathesis–stress model is one of the most widely accepted explanations of psychological disorders.
It proposes that:

• Individuals may inherit a biological predisposition (diathesis) to a mental disorder.
• The disorder develops only when this biological vulnerability is triggered by environmental or cognitive stressors.

This means that biological vulnerability alone is usually not enough to cause a psychological disorder.


Can you give an example of the diathesis–stress model?
Answer:
Yes.
An individual may have an imbalance in the neurotransmitters serotonin and dopamine, making them biologically vulnerable to depression.
However, depression may not develop until the person experiences a major life event, such as:

• Bereavement.
• Relationship breakdown.
• Job loss.
• Severe stress.

The interaction between the biological predisposition and the stressful life event results in the depressive episode.


Why is it important to consider multiple influences on behaviour?
Answer:
Psychological disorders rarely develop because of a single cause.
When studying abnormal behaviour, it is important to recognise that:

• Biological factors.
• Psychological factors.
• Cognitive factors.
• Social influences.
• Environmental experiences.

all interact to shape both normal and abnormal behaviour.
Demonstrating an understanding of these multiple influences shows critical thinking and strengthens reports and assignments.


Is the distinction between normal and abnormal behaviour fixed?
Answer:
No.
The distinction between normal and abnormal behaviour is:

• Constantly changing.
• Not absolute.
• Not universal.

Definitions of abnormality vary depending on:

• Cultural beliefs.
• Social norms.
• Historical period.
• Scientific evidence.

As psychology develops, theories and definitions continue to change.


Why do theories of abnormal behaviour change over time?
Answer:
Psychological theories are continually revised because they are based on:

• New scientific research.
• Changes in social attitudes.
• New evidence.
• Theoretical developments.

As new knowledge becomes available, previous explanations may be:

• Modified.
• Improved.
• Replaced.
• Rejected.

The same process applies to psychological treatments and how individuals with mental illness are perceived by society.


Why is critical thinking important in Biological Psychology?
Answer:
When writing reports or assignments, students should:

• Consider multiple explanations.
• Compare different psychological perspectives.
• Support arguments with scientific evidence.
• Avoid focusing on biological explanations alone.
• Demonstrate that biological, psychological, cognitive, and environmental factors interact.

This reflects a biopsychosocial approach, which provides a more complete explanation of abnormal behaviour.


What are the key ideas introduced in this chapter?
Answer (Note Form):
Psychological Abnormality

• One of the most studied areas of psychology.
• Major focus of:
  • Clinical Psychology.
  • Counselling Psychology.
• Most people experience psychological distress directly or indirectly.

Psychological Perspectives
Abnormal behaviour is studied from:

• Biological perspective.
• Cognitive perspective.
• Developmental perspective.
• Humanistic perspective.
• Social perspective.

Diathesis–Stress Model

• Biological predisposition (diathesis).
• Triggered by:
  • Environmental stressors.
  • Cognitive factors.
• Both biological and environmental factors are required.

Example

• Imbalance in serotonin and dopamine → Biological vulnerability.
• Major life event → Triggers depression.

Normal vs Abnormal Behaviour

• Not fixed.
• Changes over time.
• Influenced by:
  • Culture.
  • Society.
  • Scientific evidence.
  • Historical changes.

Critical Thinking

• Consider multiple influences.
• Use evidence.
• Avoid relying on one explanation.
• Recognise interaction between biological and environmental factors.

Conclusion
Psychological abnormality is one of the most important areas of psychology, with applications in both clinical and counselling psychology. Although Biological Psychology focuses on biological explanations, abnormal behaviour is best understood using the diathesis–stress model, which recognises that biological vulnerability interacts with environmental and cognitive factors to produce psychological disorders. The concepts of normal and abnormal behaviour are not fixed but change over time as scientific evidence, cultural values, and social attitudes evolve. Therefore, psychology students should adopt a critical, evidence-based, and biopsychosocial approach, recognising that biological, psychological, cognitive, social, and environmental influences all contribute to mental health and psychological disorders.

​

Biological Psychology – Spatial Memory
What is spatial memory?
Answer:
Spatial memory is the ability to remember the location of objects, places, and routes within the environment. It allows individuals to navigate, recognise landmarks, and remember the spatial relationships between different locations.
Research shows that the hippocampus plays a major role in spatial memory.


How does the hippocampus contribute to spatial memory?
Answer:
The hippocampus is essential for remembering spatial locations.
Evidence shows that:

• Damage (lesions) to the hippocampus impairs memory for spatial locations.
• Individuals with hippocampal damage often have difficulty navigating familiar environments.

This suggests that the hippocampus is responsible for processing and storing spatial memories.


What are place cells?
Answer:
Place cells are specialised neurons located in the hippocampus.
They:

• Become active only when an individual is in a specific location.
• Help create an internal “cognitive map” of the environment.
• Support navigation and spatial memory.

The existence of place cells provides strong evidence that the hippocampus mediates spatial memory.


What did Maguire et al. (1998) discover about the hippocampus?
Answer:
Maguire et al. (1998) found that activation of the right hippocampus was associated with:

• Knowing where places are located.
• Successfully navigating towards those locations.

This study supports the role of the right hippocampus in spatial memory and navigation.


What did Maguire et al. (2000) discover about London taxi drivers?
Answer:
Maguire et al. (2000) studied experienced London taxi drivers.
The researchers found that:

• Taxi drivers with 20 years or more of experience had significantly more grey matter in the posterior hippocampus than the general population.

This suggests a relationship between extensive navigation experience and structural changes in the hippocampus.


What limitation should be considered when interpreting the taxi driver study?
Answer:
Although experienced taxi drivers have larger posterior hippocampi, cause and effect cannot be established.
It is unclear whether:

• A larger hippocampus improves spatial memory, allowing individuals to become successful taxi drivers, or
• Years of navigation experience cause the hippocampus to grow through brain plasticity.

Therefore, the study demonstrates an association but does not prove causation.


What are the roles of the rhinal cortex and hippocampus in memory?
Answer:
Current evidence suggests that different brain regions have specialised roles.
Rhinal Cortex

• Responsible for object recognition.
• Identifies and recognises objects.

Hippocampus

• Responsible for remembering the spatial relationships between objects.
• Supports navigation and spatial memory.

Together, these regions allow individuals to recognise objects and remember where they are located.


What is the current understanding of spatial memory?
Answer:
The current consensus is that:

• The rhinal cortex processes object recognition.
• The hippocampus processes spatial relationships between objects and locations.

These brain regions work together to support effective navigation and memory.


What are the key findings on spatial memory?
Answer (Note Form):
Hippocampus

• Essential for spatial memory.
• Damage (lesions) impairs memory for spatial locations.
• Supports navigation.

Place Cells

• Specialised neurons in the hippocampus.
• Activated only in specific locations.
• Form cognitive maps of the environment.

Maguire et al. (1998)

• Right hippocampus activated during:
  • Navigation.
  • Remembering locations.

Maguire et al. (2000)

• London taxi drivers (20+ years’ experience):
  • Larger posterior hippocampal grey matter.
• Suggests relationship between navigation and hippocampal structure.

Limitation

• Cause and effect cannot be established.
• Larger hippocampus may:
  • Improve spatial memory, or
  • Develop because of extensive navigation experience.

Brain Regions Involved

• Rhinal cortex
  • Object recognition.
• Hippocampus
  • Spatial relationships between objects.
  • Navigation.
  • Spatial memory.

Conclusion
Spatial memory is primarily mediated by the hippocampus, which enables individuals to remember locations, navigate environments, and understand the spatial relationships between objects. Evidence from lesion studies, place cells, and the research of Maguire et al. (1998) and Maguire et al. (2000) supports the important role of the hippocampus in navigation and spatial memory. However, the taxi driver research cannot determine cause and effect, as it remains unclear whether a larger hippocampus leads to better spatial memory or whether extensive navigation experience produces structural changes through brain plasticity. Current evidence also suggests that the rhinal cortex is responsible for object recognition, while the hippocampus specialises in remembering the spatial relationships between objects, highlighting the complementary roles of these brain regions in memory.

​

Biological Psychology – Concussion and Memory
What is a concussion?
Answer:
A concussion is a type of brain injury caused by a blunt force trauma to the head. It can temporarily disrupt normal brain function, particularly memory.
Following a concussion, individuals may experience both:

• Retrograde amnesia
• Anterograde amnesia

The severity and duration of these memory problems depend on the extent of the brain injury.


What memory problems can occur after a concussion?
Answer:
Following a concussion, an individual may experience:

• Retrograde amnesia – loss of memories for events that occurred just before the injury.
• Anterograde amnesia – difficulty forming new memories for a period after the injury.

These memory deficits are usually temporary but vary depending on the severity of the concussion.


What is retrograde amnesia?
Answer:
Retrograde amnesia is the inability to remember events that occurred before the injury.
After a concussion:

• Memory loss usually affects events occurring immediately before the trauma.
• Older memories are generally preserved.
• Most memory gradually returns over time.
• However, memories from just before the injury are often permanently lost.

What is anterograde amnesia?
Answer:
Anterograde amnesia is the inability to form new long-term memories after the injury.
Following a concussion:

• Individuals may struggle to remember new information.
• This usually lasts for a limited period.
• Recovery depends on the severity of the brain injury.

Does everyone recover from concussion-related amnesia?
Answer:
Recovery varies depending on the extent of the brain injury.
Generally:

• Most cases of retrograde amnesia improve over time.
• However, memories of events occurring immediately before the concussion are rarely recovered.
• Recovery from anterograde amnesia also depends on the severity of the injury.

What determines the severity of memory loss after a concussion?
Answer:
The duration and extent of memory impairment depend on:

• Severity of the head injury.
• Degree of brain damage.
• Individual differences in recovery.

More severe injuries generally result in longer-lasting and more significant memory deficits.


What are the key facts about concussion?
Answer (Note Form):
Concussion

• Caused by blunt force trauma to the head.
• Temporary disruption of brain function.
• Can affect memory.

Retrograde Amnesia

• Loss of memories formed before the injury.
• Mainly affects events occurring immediately before the trauma.
• Most memories gradually recover.
• Memories immediately before the injury are often permanently lost.

Anterograde Amnesia

• Difficulty forming new memories after the injury.
• Usually temporary.
• Recovery depends on injury severity.

Recovery

• Varies according to:
  • Severity of concussion.
  • Extent of brain damage.
  • Individual recovery.

What is the relationship between concussion and memory?
Answer:
Concussion temporarily disrupts the brain’s ability to retrieve recent memories and form new memories. While most individuals gradually recover, memory for events occurring immediately before the injury is often never fully restored, suggesting that these memories had not yet been fully consolidated.


Conclusion
A concussion is a brain injury caused by blunt force trauma to the head that commonly results in retrograde and anterograde amnesia. Retrograde amnesia affects memories formed immediately before the injury, while anterograde amnesia impairs the formation of new memories after the injury. The severity and duration of these memory deficits depend on the extent of brain damage. Although most individuals gradually recover from concussion-related amnesia, memories of events occurring just before the trauma are rarely regained, highlighting the importance of memory consolidation in the formation of stable long-term memories.

​

Biological Psychology – Electroconvulsive Shock (ECS) and Memory
What is Electroconvulsive Shock (ECS)?
Answer:
Electroconvulsive Shock (ECS), also known as Electroconvulsive Therapy (ECT), is a biological treatment used to treat certain severe psychological disorders, particularly when other treatments have been ineffective.
It is commonly used to treat:

• Major depression
• Obsessive-Compulsive Disorder (OCD)

Although ECS can be highly effective, it may temporarily affect memory and thinking.


What memory effects occur after Electroconvulsive Shock (ECS)?
Answer:
Individuals who undergo ECS commonly experience:

• Retrograde amnesia (difficulty remembering events that occurred before treatment).
• A temporary period of confusion immediately after treatment.

These memory problems are usually temporary, although the severity varies between individuals.


What is retrograde amnesia?
Answer:
Retrograde amnesia is the loss of memories that were formed before brain injury or treatment.
Following ECS:

• Individuals may temporarily forget events that occurred before treatment.
• Older memories are generally more resistant to memory loss than newer memories.

How is ECS used to study memory consolidation?
Answer:
ECS has been used by researchers to investigate memory consolidation, which is the process by which short-term memories become stable long-term memories.
Researchers use ECS because:

• It temporarily disrupts recently formed memories.
• It allows scientists to estimate how long memories take to become permanently stored.

What is memory consolidation?
Answer:
Memory consolidation is the process through which newly formed memories become stable and permanently stored in long-term memory.
This process:

• Does not occur immediately.
• Takes place gradually over time.
• Makes memories increasingly resistant to forgetting, brain damage, and interference.

What does ECS tell us about memory consolidation?
Answer:
Research using ECS suggests that memory consolidation is a gradual (longitudinal) process.
Evidence shows that:

• Longer periods of retrograde amnesia indicate that memories require time to become fully consolidated.
• As memories age, they become more resistant to damage and interference.

This supports the idea that memories strengthen progressively over time rather than being stored instantly.


What are the key findings about Electroconvulsive Shock (ECS)?
Answer (Note Form):
Electroconvulsive Shock (ECS)

• Biological treatment.
• Also called Electroconvulsive Therapy (ECT).
• Used to treat:
  • Major depression.
  • Obsessive-Compulsive Disorder (OCD).

Effects on Memory

• Temporary retrograde amnesia.
• Temporary confusion after treatment.

Retrograde Amnesia

• Loss of memories formed before treatment.
• Older memories usually better preserved than recent memories.

Memory Consolidation

• ECS helps researchers study memory consolidation.
• Consolidation = Process of stabilising long-term memories.
• Occurs gradually over time.

Research Findings

• Longer retrograde amnesia suggests:
  • Memory consolidation is a longitudinal process.
• Older memories become:
  • More stable.
  • More resistant to damage.
  • Less affected by interference.

Why is ECS important in memory research?
Answer:
Although ECS is primarily a treatment for severe psychological disorders, it has also provided important evidence about how memories are formed and stored. Research using ECS supports the theory that memory consolidation occurs gradually, with memories becoming increasingly stable and resistant to disruption over time.


Conclusion
Electroconvulsive Shock (ECS) is a biological treatment used for severe conditions such as major depression and Obsessive-Compulsive Disorder (OCD). Following treatment, individuals commonly experience temporary retrograde amnesia and confusion, making ECS a valuable tool for studying memory consolidation. Research shows that memories are not stored instantly but instead become progressively more stable over time. Longer periods of retrograde amnesia following ECS provide evidence that memory consolidation is a gradual, longitudinal process, with older memories becoming increasingly resistant to brain damage and interference.

​

​Biological Psychology – The Mumby Box


What is the Mumby Box?


Answer:
The Mumby Box is an experimental apparatus developed by Mumby et al. (1989) to investigate the role of the hippocampus in spatial memory and recognition memory. It was designed to test whether rats could perform a Delayed Non-Matching-to-Sample (DNMS) task after damage (lesions) to the hippocampus.


⸻


Why were rats used in the Mumby Box experiment?


Answer:
Rats were chosen because the location of their hippocampus allows researchers to remove (through aspiration/suction) this brain region while causing only minimal damage to the parietal neocortex.


In many other animals:

• Removing the hippocampus would also damage the rhinal cortex.

• This would make it difficult to determine whether memory deficits were caused by hippocampal damage or rhinal cortex damage.

Therefore, rats provided a more accurate way of studying the specific role of the hippocampus.


⸻


What is the Delayed Non-Matching-to-Sample (DNMS) task?


Answer:
The Delayed Non-Matching-to-Sample (DNMS) task tests an animal’s ability to remember an object and then select a different (new) object to receive a reward.


Successful performance requires:

• Memory.

• Recognition.

• Learning.

• Object discrimination.

⸻


How does the Mumby Box experiment work?


Answer:


Step 1

• A rat is placed in the middle compartment of a box divided into three sections.

Step 2

• One sliding door is opened.

• The rat enters the compartment.

• A sample object is present.

• The object hides a food reward.

• A trained rat pushes the object aside and eats the food.

Step 3

• The rat returns to the middle compartment.

• The first door is closed.

• A second door is opened.

Step 4

• The rat now sees:

• One object identical to the sample object.

• One new object.

Step 5

• The rat must remember the original sample object.

• To receive the food reward, it must choose the new (non-matching) object rather than the identical sample object.

⸻


How do rats with hippocampal damage perform in the Mumby Box?


Answer:
Rats with hippocampal lesions are unable to successfully complete the task.


They have difficulty:

• Learning the relationship between:

• The sample object.

• The new object.

• The location of the food reward.

• Remembering which object is new.

This suggests that the hippocampus plays an important role in learning and memory.


⸻


What did the Mumby Box demonstrate about the hippocampus?


Answer:
The experiment demonstrated that the hippocampus is essential for learning relationships between objects and rewards.


Damage to the hippocampus impairs:

• Memory.

• Learning.

• Recognition of new objects.

• Performance on delayed non-matching-to-sample tasks.

These findings support the role of the hippocampus in memory processing.


⸻


What are the limitations of the Mumby Box experiment?


Answer:
Although the Mumby Box provides important evidence about hippocampal function, it has several limitations.


These include:

• Limited generalisation

• Findings from rats may not apply directly to humans.

• Brain damage differs between species

• Human brain injuries are rarely isolated to one brain region.

• Human brain damage is usually more widespread.

• Artificial laboratory task

• The experimental task may not reflect real-life memory processes.

Therefore, the findings should be interpreted cautiously.


⸻


What are the key points about the Mumby Box?


Answer (Note Form):


Purpose

• Developed by Mumby et al. (1989).

• Investigated the role of the hippocampus in memory.

• Tested Delayed Non-Matching-to-Sample (DNMS) performance.

⸻


Why Rats Were Used

• Hippocampus can be removed with minimal damage to the parietal neocortex.

• Reduces accidental damage to the rhinal cortex.

• Allows more accurate study of hippocampal function.

⸻


Procedure

• Rat placed in middle compartment.

• Finds sample object hiding food.

• Returns to centre.

• Second compartment contains:

• Identical sample object.

• New object.

• Rat must choose the new object to obtain food.

⸻


Results

• Normal rats:

• Learn the task.

• Choose the new object.

• Rats with hippocampal lesions:

• Unable to learn object–reward relationships.

• Poor memory performance.

⸻


Findings

• Hippocampus is important for:

• Learning.

• Memory.

• Recognition.

• Delayed Non-Matching-to-Sample tasks.

⸻


Limitations

• Difficult to generalise from rats to humans.

• Human brain damage is rarely isolated.

• Laboratory tasks may not reflect everyday memory.

⸻


Conclusion


The Mumby Box, developed by Mumby et al. (1989), was designed to investigate the role of the hippocampus in memory using a Delayed Non-Matching-to-Sample (DNMS) task. The study demonstrated that rats with hippocampal lesions were unable to learn the relationship between the sample object, the new object, and the food reward, providing strong evidence that the hippocampus is essential for learning, recognition, and memory. However, the study has limitations because findings from animal research cannot always be generalised to humans, and human brain damage is typically more widespread than the isolated lesions created in laboratory animals. Therefore, while the Mumby Box has made an important contribution to understanding hippocampal function, its findings should be interpreted alongside evidence from human neuropsychological research.

Biological Psychology – Anxiety and Stress Disorders
What are anxiety and stress disorders?
Answer:
Anxiety disorders are complex (multifaceted) mental health conditions that involve excessive fear, worry, and anxiety that interfere with an individual’s daily functioning. During undergraduate psychology studies, you will learn about several different anxiety and stress disorders.
These commonly include:

• Acute Stress Disorder (ASD)
• Agoraphobia (with or without panic disorder)
• Generalised Anxiety Disorder (GAD)
• Obsessive-Compulsive Disorder (OCD)
• Panic Disorder (with or without agoraphobia)
• Specific Phobias
• Post-Traumatic Stress Disorder (PTSD)

Are stress and anxiety always considered abnormal?
Answer:
No. Stress and anxiety are normal emotional responses that everyone experiences. They are closely related to the functioning of the central nervous system (CNS), peripheral nervous system (PNS), and endocrine system, which regulate the body’s response to stress.
These emotional responses become disorders only when they are:

• Excessive
• Persistent
• Difficult to control
• Interfere with normal daily functioning.

What are the main debates surrounding anxiety disorders?
Answer:
Several important debates exist regarding the causes, diagnosis, and treatment of anxiety disorders.


What is the determinism versus free will debate?
Answer:
This debate focuses on whether anxiety disorders are caused mainly by biological factors (determinism) or whether individuals have the ability to consciously change their thoughts and behaviours through free will.
Determinism

• Behaviour is determined by biological factors.
• Anxiety may result from:
  • Genetics
  • Brain functioning
  • Neurotransmitters
  • Automatic physiological reflexes

Free Will

• Individuals can consciously change their behaviour.
• Anxiety can be reduced by:
  • Changing negative thought patterns
  • Learning healthier coping strategies
  • Using psychological therapies such as Cognitive Behavioural Therapy (CBT)

Why is the validity and reliability of diagnostic manuals debated?
Answer:
Psychologists debate whether diagnostic manuals accurately distinguish between different anxiety disorders.
The debate focuses on whether the manuals:

• Correctly identify each disorder (validity).
• Produce consistent diagnoses when used by different clinicians (reliability).
• Successfully differentiate disorders that often share similar symptoms.

Why is combining treatments considered important?
Answer:
Many psychologists believe that combining different treatment approaches produces the best outcomes for patients.
For example:

• Biological treatments (such as medication) reduce the physiological symptoms of anxiety.
• Psychological treatments (such as CBT) address the underlying thoughts and behaviours that contribute to anxiety.

Combining these treatments can:

• Improve treatment effectiveness.
• Produce longer-lasting recovery.
• Reduce dependence on medication.

Why is it important to understand these debates?
Answer:
As an undergraduate psychology student, you should be able to discuss these debates in detail because they influence:

• How anxiety disorders are explained.
• How they are diagnosed.
• Which treatments are considered most effective.
• How biological and psychological approaches can be integrated to improve patient outcomes.

Conclusion
Anxiety and stress disorders are multifaceted conditions that include Acute Stress Disorder (ASD), Agoraphobia, Generalised Anxiety Disorder (GAD), Obsessive-Compulsive Disorder (OCD), Panic Disorder, Specific Phobias, and Post-Traumatic Stress Disorder (PTSD). Although stress and anxiety are normal emotional responses regulated by the nervous and endocrine systems, they become disorders when they are excessive, persistent, and interfere with daily life. Important debates surrounding anxiety disorders include determinism versus free will, the validity and reliability of diagnostic manuals, and the effectiveness of combining biological and psychological treatments. Understanding these debates allows psychologists to better explain, diagnose, and treat anxiety disorders using a comprehensive and evidence-based approach.

​

Biological Psychology – Non-Biological Considerations of Schizophrenia
Why is it important to consider non-biological factors when studying schizophrenia?
Answer:
Although Biological Psychology focuses on biological explanations, it is important to consider a range of influences on schizophrenia rather than only biological factors. An individual with schizophrenia does not exist in a biological vacuum, meaning that psychological, social, cultural, and environmental factors also affect the development, diagnosis, treatment, and recovery of the disorder. Considering these additional influences demonstrates critical thinking and provides a more complete understanding of schizophrenia.


How do cultural norms influence schizophrenia?
Answer:
Cultural beliefs and social expectations influence how behaviour is interpreted.
Depending on the culture:

• Certain behaviours may be considered normal.
• Others may be viewed as eccentric.
• Some behaviours may be classified as psychologically abnormal.

As a result, cultural norms can affect whether an individual is diagnosed with schizophrenia.


How does a support network influence schizophrenia?
Answer:
The support network available to an individual plays an important role in both treatment and recovery.
A strong support network can:

• Encourage early recognition of symptoms.
• Help the individual seek treatment sooner.
• Improve recovery outcomes.
• Reduce the likelihood of relapse.

Limited social support may delay treatment and increase the risk of worsening symptoms.


How do stigma and media portrayals affect individuals with schizophrenia?
Answer:
A lack of public understanding, together with media portrayals that often describe individuals with schizophrenia as dangerous, can create stigma.
This stigma may lead to:

• Fear and discrimination.
• Negative attitudes from others.
• Social isolation.
• Reduced self-esteem.
• Worsening of symptoms.
• Reluctance to seek treatment.

Negative stereotypes can therefore make recovery more difficult.


How does socioeconomic status influence schizophrenia?
Answer:
An individual’s socioeconomic status (SES) can significantly affect their diagnosis and treatment.
Factors include:

• Ability to access healthcare.
• Financial resources.
• Availability of mental health services.
• Stable housing.

Individuals with limited financial resources or who are homeless may be less likely to receive an accurate diagnosis or appropriate treatment, particularly in countries where healthcare is not freely available.


How do cognitive strategies and coping mechanisms influence schizophrenia?
Answer:
The way an individual thinks about and manages their symptoms can influence their recovery.
Effective cognitive strategies and coping mechanisms can:

• Help individuals manage symptoms more effectively.
• Improve daily functioning.
• Support recovery.
• Reduce the likelihood of relapse.

Poor coping strategies may increase distress and make symptom management more difficult.


What are the main non-biological considerations of schizophrenia?
Answer (Note Form):

• Cultural norms
  • Influence what is considered normal or abnormal behaviour.
  • Affect diagnosis of schizophrenia.
• Support network
  • Encourages early treatment.
  • Improves recovery.
  • Reduces relapse risk.
• Stigma and media portrayal
  • Negative stereotypes portray people with schizophrenia as dangerous.
  • Can lead to discrimination, social isolation, and worsening symptoms.
  • May discourage individuals from seeking help.
• Socioeconomic status (SES)
  • Influences access to healthcare and treatment.
  • Homelessness and financial difficulties can delay diagnosis and recovery.
• Cognitive strategies and coping mechanisms
  • Affect how well individuals manage symptoms.
  • Better coping strategies improve recovery and daily functioning.

Conclusion
Although schizophrenia has important biological causes, it is essential to recognise that non-biological factors also influence the disorder. Cultural beliefs, social support, stigma, media portrayals, socioeconomic status, and an individual’s coping strategies all affect the diagnosis, treatment, recovery, and risk of relapse. Therefore, schizophrenia is best understood using a biopsychosocial approach, which recognises that biological, psychological, and social factors interact to influence both the development and management of the disorder.

​

Biological Psychology – Schizophrenia
What is schizophrenia?
Answer:
Schizophrenia is a severe and debilitating mental disorder that affects approximately 1% of the general population. It usually develops during late adolescence or early adulthood.
Although schizophrenia shares some symptoms with unipolar depression and bipolar disorder, its symptoms are generally:

• More severe.
• More obvious to other people.
• More disruptive to normal daily functioning.

Schizophrenia significantly affects an individual’s thoughts, emotions, behaviour, and ability to function in everyday life.


When does schizophrenia usually develop?
Answer:
Schizophrenia most commonly develops during:

• Late adolescence
• Early adulthood

This is the period when symptoms typically first become noticeable.


How does schizophrenia affect an individual’s daily functioning?
Answer:
Schizophrenia causes significant impairment in many aspects of life.
It can affect:

• Thinking
• Perception
• Emotions
• Behaviour
• Social relationships
• Education or employment
• Daily living skills

Because of these impairments, many individuals experience difficulties maintaining independence.


Why is schizophrenia associated with self-harm and suicide?
Answer:
Schizophrenia is associated with an increased risk of self-harm and suicide because hallucinations and delusions are often violent, frightening, or distressing.
These symptoms may:

• Cause overwhelming emotional distress.
• Increase feelings of fear and hopelessness.
• Lead some individuals to harm themselves.

Why may individuals with schizophrenia require hospitalisation?
Answer:
Due to the severity of symptoms, individuals with schizophrenia may require treatment under the Mental Health Act.
Hospitalisation may be:

• A single admission.
• Long-term (longitudinal).
• Repeated if symptoms remain severe or return after remission.

Hospital admission aims to:

• Stabilise symptoms.
• Protect the individual from harm.
• Provide appropriate treatment.

Are individuals with schizophrenia dangerous to others?
Answer:
Although there have been isolated cases where individuals with schizophrenia have harmed others, this is uncommon.
The majority of the risk is directed towards:

• The individual themselves, rather than other people.

Most people with schizophrenia are not violent, despite negative stereotypes often portrayed in the media.


Can schizophrenia be completely cured?
Answer:
Once an individual is diagnosed with schizophrenia, complete recovery is uncommon because of the underlying changes in brain structure and function associated with the disorder.
However:

• Appropriate treatment can greatly reduce symptoms.
• Many individuals experience periods of remission, during which symptoms become much less severe.
• Treatment can improve quality of life and daily functioning.

What is remission?
Answer:
Remission is a period during which the symptoms of schizophrenia become less severe or temporarily disappear. Although symptoms improve during remission, the disorder may still be present, and symptoms can return.


Why are the diagnostic criteria for schizophrenia controversial?
Answer:
The diagnostic criteria for schizophrenia have been criticised for lacking:

• Validity – whether the diagnosis accurately measures schizophrenia as a distinct disorder.
• Reliability – whether different clinicians consistently diagnose the same condition.

Some psychologists argue that schizophrenia is a “failed category” because:

• Many individuals with different symptoms receive the same diagnosis.
• The disorder may not be clearly distinguishable from other mental illnesses.
• The current diagnostic system may not accurately reflect the complexity of schizophrenia.

What are the key facts about schizophrenia?
Answer (Note Form):

• Affects approximately 1% of the population.
• Usually develops during late adolescence or early adulthood.
• Symptoms are generally more severe than those seen in depression.
• Causes major impairment in:
  • Thinking
  • Emotions
  • Behaviour
  • Daily functioning.
• Associated with:
  • Hallucinations
  • Delusions
  • Self-harm
  • Increased suicide risk.
• May require hospitalisation under the Mental Health Act.
• Most individuals are not dangerous to others.
• Symptoms improve with treatment and during remission.
• Complete recovery is uncommon due to underlying brain abnormalities.

What are the major debates surrounding schizophrenia?
Answer (Note Form):
Validity

• Do diagnostic criteria accurately identify schizophrenia?
• Does schizophrenia represent a distinct mental disorder?

Reliability

• Do different clinicians consistently diagnose schizophrenia in the same way?

“Failed Category” Debate

• Some psychologists argue schizophrenia includes many different symptom patterns.
• May not clearly distinguish between different mental disorders.
• Diagnosis may group together individuals with different underlying conditions.

Conclusion
Schizophrenia is a severe, chronic mental disorder that affects approximately 1% of the population and usually develops during late adolescence or early adulthood. It causes significant impairment in thinking, emotions, behaviour, and daily functioning, and is associated with hallucinations, delusions, self-harm, and an increased risk of suicide. Although some individuals may require hospitalisation under the Mental Health Act, most people with schizophrenia are not dangerous to others, with the greatest risk being to themselves. While complete recovery is uncommon because of underlying brain abnormalities, appropriate treatment and periods of remission can greatly reduce symptoms and improve quality of life. The diagnosis of schizophrenia remains controversial because questions continue to be raised about the validity, reliability, and whether schizophrenia should be regarded as a single disorder or a “failed category” containing a wide range of different conditions.

​