Studies of children’s temperament from 3 months of age to 13 years old found that boys, compared to girls, were rated _______.
a. higher in activity
b. lower in high-intensity pleasure
c. both of the above
d. neither of the above
a. higher in activity
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Projective tests
a. are objectively scored. b. are used mostly by cognitive behavioral therapists. c. involve the presentation of stimuli that elicit standardized responses. d. involve the presentation of ambiguous stimuli.
In a within-subjects design, there are two mean scores per treatment condition.
Answer the following statement true (T) or false (F)
Which of the following scenario poses a serious problem when using a paired-samples t test, one-tailed?
A. The population of difference scores is approximately normal. B. The sample has less than 40 participants. C. There is a ceiling effect in the test, which is likely to make the population of difference scores highly skewed. D. Pretest and posttest scores are highly correlated with each other.
A child wants a toy that is too big to be pulled straight through the bars of her crib. She studies the toy for some time and then grabs it, turns it sideways, and fits it through the bars. This child is using:
a. primary circular reaction. b. invention of new means through mental combinations. c. secondary circular reactions. d. coordination of secondary schemes.