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Psychological Terms – American College Testing Program (ACTP)
The American College Testing Program, commonly known as the ACT, is a standardized examination widely used in the United States to evaluate students’ academic readiness for university admission. The test assesses multiple areas—English, mathematics, natural sciences, and social sciences—to provide a general estimate of educational preparation. It serves a similar purpose to the SAT, though its structure and emphasis differ.
The American College Testing Program, commonly known as the ACT, is a standardized examination widely used in the United States to evaluate students’ academic readiness for university admission. The test assesses multiple areas—English, mathematics, natural sciences, and social sciences—to provide a general estimate of educational preparation. It serves a similar purpose to the SAT, though its structure and emphasis differ.
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Psychological Terms – American Sign Language (ASL)
American Sign Language is the primary visual-gestural language used by Deaf communities in the United States. It communicates meaning through structured hand movements, facial expression, and body posture. ASL is a fully developed language with its own grammar and syntax and is not derived from English. It is distinct from British Sign Language (BSL), meaning speakers of the two are not mutually intelligible.
American Sign Language is the primary visual-gestural language used by Deaf communities in the United States. It communicates meaning through structured hand movements, facial expression, and body posture. ASL is a fully developed language with its own grammar and syntax and is not derived from English. It is distinct from British Sign Language (BSL), meaning speakers of the two are not mutually intelligible.
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Psychological Terms – Ameslan
Ameslan is an informal term for American Sign Language (ASL). Like ASL, it refers to the signed linguistic system used by the Deaf community in North America, governed by distinct grammatical and symbolic rules.
Ameslan is an informal term for American Sign Language (ASL). Like ASL, it refers to the signed linguistic system used by the Deaf community in North America, governed by distinct grammatical and symbolic rules.
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Psychological Terms – Ames Room
An Ames room is a specially constructed, distorted room that creates powerful illusions of size and distance. Viewed through a peephole with one eye, the room appears normal and rectangular, but because the floor, walls, and ceiling are actually slanted, people positioned in different corners seem dramatically larger or smaller. This demonstrates how strong perceptual assumptions—such as expecting rooms to be rectangular—shape spatial interpretation.
An Ames room is a specially constructed, distorted room that creates powerful illusions of size and distance. Viewed through a peephole with one eye, the room appears normal and rectangular, but because the floor, walls, and ceiling are actually slanted, people positioned in different corners seem dramatically larger or smaller. This demonstrates how strong perceptual assumptions—such as expecting rooms to be rectangular—shape spatial interpretation.
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Psychological Terms – Ames Window
The Ames window is a trapezoid-shaped panel that creates an illusion when rotated. Instead of being perceived as spinning continuously, the window appears to oscillate back and forth. This occurs because the viewer interprets the shape as a normal rectangular window, showing how prior knowledge biases perception.
The Ames window is a trapezoid-shaped panel that creates an illusion when rotated. Instead of being perceived as spinning continuously, the window appears to oscillate back and forth. This occurs because the viewer interprets the shape as a normal rectangular window, showing how prior knowledge biases perception.
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Psychological Terms – Ametropia
Ametropia is a condition in which light does not focus properly on the retina, resulting in blurred vision. It includes myopia, hyperopia, and astigmatism. Although the eye appears structurally normal, faulty refraction prevents clear imaging, leading to partial or functional visual loss unless corrected.
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Psychological Terms – Amfetamine
A spelling variant of amphetamine, a stimulant that elevates activity in the central nervous system and is used medically for disorders such as ADHD and narcolepsy.
A spelling variant of amphetamine, a stimulant that elevates activity in the central nervous system and is used medically for disorders such as ADHD and narcolepsy.
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Psychological Terms – Amimia
Amimia is the inability to express meaningfully through gestures or facial movement, or to understand others’ gestures. It typically results from neurological injury and diminishes nonverbal communication.
Amimia is the inability to express meaningfully through gestures or facial movement, or to understand others’ gestures. It typically results from neurological injury and diminishes nonverbal communication.
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Psychological Terms – Amine
An amine is an organic compound derived from ammonia (NH₃) in which hydrogen atoms are replaced by hydrocarbon groups. Many biologically important amines act as neurotransmitters, including dopamine, serotonin, histamine, and norepinephrine, making them central to brain function and psychological processes.
An amine is an organic compound derived from ammonia (NH₃) in which hydrogen atoms are replaced by hydrocarbon groups. Many biologically important amines act as neurotransmitters, including dopamine, serotonin, histamine, and norepinephrine, making them central to brain function and psychological processes.
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Psychological Terms – Amino Acid
An amino acid is any organic compound that contains both an amino group (NH₂) and a carboxyl group (COOH). Out of more than 100 amino acids found in nature, twenty form the essential building blocks of all peptides, polypeptides, and proteins that make up living cells. These include non-essential amino acids, which the body can manufacture, and essential amino acids, which must be consumed in the diet. Amino acids are vital in numerous psychological and neurological functions because many of them—such as glutamic acid, glycine, and tyrosine—are precursors or components of neurotransmitters.
Related biochemical concepts include aspartic acid, creatine, DOPA, phenylalanine, tryptophan, and codons, which link amino acids to the genetic code.
