What is the main purpose of matching?
a. to reduce initial differences between the experimental and control groups on the dependent variable
b. to reduce the amount of variability among subjects within each treatment group
c. to control for order effects
d. to control for sequence effects
a
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Newborn babies spend 2 to 3 hours a day, every day, crying or on the verge of crying
a. True b. False Indicate whether the statement is true or false
When he first started taking drugs, Marcell found that they markedly affected his perceptions. Now, however, he finds that greater dosages are required to achieve the same effects. He is experiencing
A. drug intolerance. B. drug tolerance. C. psychological dependence. D. withdrawal symptoms.
Parents who encourage their children to think and act independently at an early age are likely to encourage
a. performance goals. c. learning goals. b. competitiveness. d. a need to achieve.
Which type of therapy is based on using learning principles, such as classical conditioning?
A) behavioral B) insight C) psychoanalysis D) client-centered