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A-B-A design Experimental design in which participants first experience the baseline condition (A), then experience the experimental treatment (B), and then return to the baseline (A).
Abnormal psychology The area of psychological investigation concerned with understanding the nature of individual pathologies of mind, mood, and behavior.
Absolute threshold The minimum amount of physical energy needed to produce a reliable sensory experience; operationally defined as the stimulus level at which a sensory signal is detected half the time.
Accommodation The process by which the ciliary muscles change the thickness of the lens of the eye to permit variable focusing on near and distant objects.
Accommodation According to Piaget, the process of restructuring or modifying cognitive structures so that new information can fit into them more easily; this process works in tandem with assimilation.
Acquisition The stage in a classical conditioning experiment during which the conditioned response is first elicited by the conditioned stimulus.
A-B-A design Experimental design in which participants first experience the baseline condition (A), then experience the experimental treatment (B), and then return to the baseline (A).
Abnormal psychology The area of psychological investigation concerned with understanding the nature of individual pathologies of mind, mood, and behavior.
Absolute threshold The minimum amount of physical energy needed to produce a reliable sensory experience; operationally defined as the stimulus level at which a sensory signal is detected half the time.
Accommodation The process by which the ciliary muscles change the thickness of the lens of the eye to permit variable focusing on near and distant objects.
Accommodation According to Piaget, the process of restructuring or modifying cognitive structures so that new information can fit into them more easily; this process works in tandem with assimilation.
Acquisition The stage in a classical conditioning experiment during which the conditioned response is first elicited by the conditioned stimulus.