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KembaraXtra-Psychology – Body Dysmorphic Disorder
Body dysmorphic disorder is a mental health condition characterized by excessive preoccupation with perceived flaws in physical appearance that are either minor or unobservable to others. Individuals may engage in repetitive behaviors such as mirror checking or seeking reassurance, often experiencing significant distress and functional impairment. The disorder reflects distorted body image processing and is related to obsessive–compulsive spectrum conditions.
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KembaraXtra-Psychology – Blood–Brain Barrier
The blood–brain barrier is a selectively permeable membrane that protects the brain by regulating which substances in the bloodstream can enter neural tissue. Formed by tightly joined endothelial cells, it prevents toxins and pathogens from reaching the brain while allowing essential nutrients to pass. This barrier is critical for maintaining stable neural functioning but also complicates drug delivery to the brain.
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KembaraXtra-Psychology – Blackout
A blackout refers to a temporary loss of memory for events that occurred during a period of consciousness, most commonly associated with acute alcohol intoxication but also occurring in certain neurological conditions. During an alcohol-induced blackout, individuals may appear alert and capable of functioning but later have no recollection of events due to disruption of memory consolidation processes in the hippocampus. Unlike loss of consciousness, blackout involves preserved awareness at the time but impaired encoding into long-term memory.
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KembaraXtra-Psychology – Bivariate Correlation
A bivariate correlation measures the strength and direction of the relationship between two variables. The correlation coefficient ranges from −1 to +1, indicating perfect negative or positive association respectively, with zero representing no linear relationship. Correlation does not imply causation but provides insight into patterns of association.
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KembaraXtra-Psychology – Blocking
Blocking is a phenomenon in classical conditioning in which prior learning about one stimulus prevents learning about a new stimulus when both are presented together. If a conditioned stimulus has already been associated with an unconditioned stimulus, introducing a second stimulus alongside it does not produce additional learning about the new cue. Blocking illustrates that conditioning depends on prediction error rather than mere pairing.
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KembaraXtra-Psychology – Breadth of Attention
Breadth of attention refers to the amount of information an individual can process or monitor simultaneously. It is influenced by task complexity, expertise, and cognitive load. Limited attentional capacity means individuals must selectively allocate resources to relevant stimuli.
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KembaraXtra-Psychology – Bounded Rationality
Bounded rationality is the concept that decision-making is limited by cognitive constraints such as incomplete information, limited time, and restricted computational capacity. Rather than optimizing decisions, individuals often satisfice—selecting an option that is good enough. This concept challenges classical models of perfect rationality.
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KembaraXtra-Psychology – Brain Lateralization
Brain lateralization refers to the specialization of certain cognitive functions within one hemisphere of the brain. For example, language processing is typically dominant in the left hemisphere, while spatial processing often relies more heavily on the right. Lateralization enhances efficiency by reducing redundancy in neural processing.
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KembaraXtra-Psychology – Brainstem
The brainstem is the lower portion of the brain connecting the cerebrum with the spinal cord and consists of the midbrain, pons, and medulla. It regulates vital functions including respiration, heart rate, and arousal. Damage to the brainstem can be life-threatening due to its control over basic survival processes.
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KembaraXtra-Psychology – Bohr Effect
The Bohr effect describes the physiological process by which hemoglobin releases oxygen more readily in tissues with higher concentrations of carbon dioxide and lower pH levels. This mechanism ensures that active tissues receive increased oxygen supply. Although primarily a biological concept, it illustrates adaptive physiological regulation.
