In an experiment, a researcher manipulates one variable to see how it affects a second variable. The second variable, which is observed for any possible effects, is called the __________
a. dependent variable
b. control variable
c. independent variable
d. hypothetical variable
a
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What is most important to survival and recovery from a traumatic brain injury?
a. immediate medical intervention c. social support b. psychological testing d. optimism
Blaine just drove from outside where it was bright into a dark tunnel. When he entered the tunnel, his pupils
A. did not change at all. B. got smaller (less open). C. got bigger (more open). D. quickly got bigger and then got smaller and stayed that way.
Darwin believed that observable behavior can be studied ______
a. experimentally b. only in humans c. scientifically d. only in terms of culture
The text describes a study in Italy in which mothers and other family members were observed as they cared for infants. In particular, the authors noted that Italian children were often teased by family members
The point of describing this study was that: a. teasing causes lasting harm to the positive emotional development of children b. teasing should be considered a form of child abuse c. children seem to develop normal trusting relationships with adults, even when they are teased, so long as they are well cared for in other ways d. Italian mothers perform very few of the child-care duties assigned to mothers in the United States, and their children therefore grow up to be much more independent