Researchers who were studying plant growth raised plants in two separate rooms. One room had taped conversations playing 24 hours a day; the other room was silent. The researchers found that the plants grew better in the room that had the conversations playing. In this study, the type of room (conversation or silence) would be
a. the dependent variable.
b. an extraneous variable.
c. a placebo.
d. the independent variable.
D
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Biological and environmental factors that are associated with a certain historical event, such as the bombing of Pearl Harbor, can be considered what?
A. age-graded influences B. history-graded influences C. sociocultural-graded influences D. non-normative life events
H. M. lost the ability to form new memories after an operation removed portions of his
a) cortex. b) cerebellum. c) hippocampus. d) hypothalamus.
The ______ personality is that of a loner who seems withdrawn, unfeeling, and distant
a. antisocial c. schizoid b. paranoid d. narcissistic
Danyon is a popular student who plays basketball and excels at track and field. He describes his friends and other students on the sports teams at school as jocks, but doesn't feel that this label really describes him. Most likely, Danyon may believe that
a. too unique to be labeled as any one thing. b. not as good at sports as his friends. c. being ostracized from the group. d. none of the above.