One reason to prescreen participants is to ______.
A. increase external validity
B. ensure that the study is ethical
C. increase heterogeneity of the sample
D. ensure the study uses random assignment
Ans: B
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If a child is born with stunted arms and legs, what may have happened?
a. The fetus was exposed to a significant teratogen between the 4th and 8th weeks after conception. b. The mother must have ingested alcohol at least once during the pregnancy. c. The fetus was exposed to a teratogen during the third trimester. d. The amniotic fluid was infected with some kind of virus.
According to B.F. Skinner, cooing and babbling are inborn behaviors; only those sounds that are consistent with a child's parents' native language remain because of ____.
A. extinction and shaping B. extinction and building C. devaluing and shaping D. devaluing and building
What is an example of psychosurgery?
A. Prefrontal lobotomy B. Electroconvulsive therapy (ECT) C. Transcranial magnetic stimulation (TMS) D. Eye movement desensitization and reprocessing (EMDR) therapy
Which preschooler is most likely to die of injuries?
a) A boy in the suburbs b) A boy in the inner city c) A girl in a small town d) A girl growing up on a farm