In a within-subjects study that extends over a relatively long time, it is possible that there will be systematic changes in the participants' skills or knowledge during the time of the study. When these changes influence the participants' scores, causing scores at the end of the study to be different from scores at the beginning, the effect is called ____
a. history effects
b. instrumentation
c. maturation
d. regression toward the mean
c
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Which would best fit with the theory that differential treatment by parents negatively influences math skills in a child through the creation of self-fulfilling prophecy?
a. Math-talented parents tend to encourage their children to do well in math. b. Math-untalented parents tend to discourage their children from doing well in math. c. Parents attribute their daughter's math success to luck and not ability so the daughter becomes convinced that she is not good at math but rather gets lucky on math tests sometimes. d. Son's math performance is not good (and his parents tell him so), but he decides to take more math to challenge himself.
L.L. Thurstone suggested that intelligence should be conceptualized as having multiple types of intelligence that are independent of each other. How many types did he propose?
a. three b. five c. seven d. twelve
One reason our lips and fingertips are so sensitive is that they:
A) are used much more often than other areas of the body. B) contain a relatively sparse arrangement of touch receptors. C) are connected directly to the receptors in the spinal cord. D) have a large topographical representation in the somatosensory cortex.
Periaqueductal gray (PAG) contains large numbers of _________ receptors.
A. glutamate B. substance P C. endorphin D. serotonin