Psychoactive substances are substances that ____
a. alter moods, thought processes, or other psychological states
b. are considered illicit drugs only
c. have dependence potential but not abuse potential in users
d. are available over-the-counter
a
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Malcolm became frustrated because he could not fit one of the pieces of a puzzle into place. His father oriented the piece correctly so that Malcolm could slip it into the puzzle. The father provided Malcolm with a
a. negative reinforcer. c. concrete operation. b. scaffold. d. concept.
Imagine you could block a neuron's sodium channels. What would you expect would happen?
A. When an action potential was generated, the neuron could no longer return to the resting potential. B. An action potential could not be generated. C. The threshold for producing an action potential would be greatly increased. D. The threshold for producing an action potential would be greatly decreased.
________ is usually defined as the spontaneous expulsion of the fetus before the 20th week of pregnancy.
A. A stillbirth B. Endometriosis C. Preeclampsia D. A miscarriage
According to Feingold (1989), the matching phenomenon occurs least often among:
a. female friends b. romantic couples c. male friends d. new relationships e. fixed marriages