A recent investigation of potential sampling bias in psychological research indicated that approximately___ of the samples in published studies came from the United States
a. 10%
b. 33%
c. 66%
d. 90%
C
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Two friends are debating about the nature of IQ. Sam claims that it measures innate abilities. Joseph says that it is influenced strongly by environmental factors. Which of the following could Joseph truthfully use to support his arguments?
A. It has been estimated that IQ can vary up to 15 points depending on environment. B. Identical twins raised together tend to have similar IQs. C. It is likely that two unrelated people raised in different environments will have different IQs. D. Adopted children have IQs that are similar to those of children who have stayed with their natural lower-class parents.
Stress elevates blood levels of cortisol and adrenaline (epinephrine) and heightens the probability that a dormant Epstein-Barr virus will be reactivated
Indicate whether the statement is true or false
If a measure is accurate, it is said to be:
a. consistent. b. valid. c. precise. d. reliable.
The feature comparison model correctly predicts that classification time depends more on _____ than on _____
a. category size; similarity c. hierarchical level; category size b. similarity; category size d. hierarchical level; similarity