A student who is participating in a long term research project decides to stop participating and does not inform the experimenter of his decision. This is an example of which of the following threats to validity?
a. Selection
b. History
c. Maturation
d. Attrition
d
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Logan has an autism spectrum disorder and has a great deal of difficulty understanding the social rules involved in conversation. Logan is having difficulty with ____
a. ?connotations b. ?syntactics c. ?grammar d. ?pragmatics
The learning process studied in the Skinner box is known as:
a. social learning. b. higher-order conditioning. c. cognitive learning. d. operant conditioning.
Which of these is a class of prescription drugs that depress central nervous system activity?
a) opioids b) stimulants c) barbiturates d) hallucinogens
Which of the following statements about adolescent friendships is FALSE?
A) Asian American parents are more likely than Latino and African American parents to discourage their children from having peer relationships. B) Adolescents with secure attachments to parents tend to have better peer relationships than adolescents with insecure attachments. C) An adolescent's best friend is usually of the same gender, race, and SES. D) Adolescent friends tend to coerce each other into doing things.