Boys who mature early tend to be less confident and shyer.
Answer the following statement true (T) or false (F)
False
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Which of the following is the best example of a confounding variable jeopardizing the internal validity of a study?
a. Researchers perform a factor analysis and, in the inferential factor-naming stage, assign names to the factors that cause disagreements with other researchers. b. A participant in a psychotherapy effectiveness study receives counseling from a minister in addition to the therapy provided in the study. c. A participant in a psychotherapy study who is placed on a waiting list receives no treatment at all while other participants in the same study are receiving psychotherapy. d. Two variables are found to correlate highly with each other, when in fact they are both caused by a third, unmeasured, variable.
The stage of deepest sleep shows 50% of brain waves are _____ waves
a) alpha b) delta c) theta d) beta
Mark and Kathy take their 2-year-old son to the supermarket every Saturday. Each week, the same sequence of events unfolds: Their son screams, demanding that they buy him treats. Although they refuse to give in to his demands, he continues to scream. Finally, either Mark or Kathy gets in their son's face and yells at the top of their lungs "Shut up!" He stops screaming instantly. What operant conditioning concepts are illustrated in this story?
a. The parents are using negative reinforcement to increase their son's screaming. b. The parents are in a very dysfunctional marriage; their child's screaming is his way of trying to get his parents to remain married. c. The parents are using punishment to suppress the screaming; their use of punishment is negatively reinforced by the cessation of screaming. d. Their son probably learned how to scream by observing his parents at home, and now he is reinforced on a variable-interval schedule of reinforcement. e. The parents are using classical conditioning, and the screaming is a conditioned response.
Catatonia was recognized _______schizophrenia in previous versions of the diagnostic manual
a. as the most serious form of b. as the only type of c. as a separate subtype of d. as the least serious form of