Students from two groups were sent one-at-a-time into a room to receive a set of instructions pertaining to four simple tasks they were supposed to perform
The first group was met by a kindly individual who carefully explained in a cheerful manner what was expected of them. The second group was met by the same man, but this time he was angry and aggressive and forcefully demanded compliance. The experimenter then left the room and each student was observed through a one-way mirror to see how long it took them to complete all four tasks. The independent variable in this experiment is __________
a) time required to complete the four tasks.
b) the demeanor or attitude presented by the experimenter.
c) the number of tasks the students were required to perform.
d) the isolation of the students.
b
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If health psychologists discovered that tall people have higher blood pressure than shorter people, this would demonstrate that:
A) blood pressure is inherited. B) blood pressure and height are positively correlated. C) being tall causes blood pressure to rise. D) blood pressure and height are negatively correlated.
When Bayley retested adults who had been part of a Berkeley, California, study when they were children, she found that the typical 36-year-old was still improving on
comprehension and picture completion. arithmetic and vocabulary. arithmetic and picture completion. vocabulary and comprehension.