Once people become physiologically dependent on a drug, the drug habit is maintained by
______.
a. positive reinforcement c. classical conditioning
b. negative reinforcement d. negative punishment
B
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A child cannot understand that a model and the larger object it resembles represent the same thing. This child
a. is probably in the concrete operational stage. b. is having difficulty with mental representations. c. is probably able to conserve. d. lacks the ability to engage in reversible actions.
A researcher believes that depressive symptoms will be reduced when family members give attention to competent behavior and express disinterest when depressive behavior is exhibited. In this example, attention is the ____ and depressive symptoms are the ____
a. confounding variable; manipulated variable b. dependent variable; independent variable c. independent variable; dependent variable d. experimental variable; control variable
The process of translating environmental energy into neural impulses is ____________________
Fill in the blank(s) with correct word
The smallest difference in intensity of two stimuli required to perceive a difference in intensity 50% of the time is called the _______ _______
Fill in the blank(s) with correct word