Quisley's hypothesis is that listening to classical music improves intellectual performance. He randomly divides a mathematics class into two rooms. In room A, music by Mozart plays softly in the background during a lecture. In room B, the students listen to a lecture without background music. The independent variable is ____.?
a. ?whether music played during a lecture.
b. ?mathematical performance.
c. ?the level of mathematics taught.
d. ?present only in the control group.
ANSWER:
a
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a. unconscious anxiety about the content of speech production. b. classical conditioning. c. interference from inappropriate sounds that are highly active. d. a variant of the Stroop effect.
When concepts are defined in terms of the way in which they will be measured, those concepts are said to be:
a. hypothetical variables b. externally valid c. internally valid d. operationally defined
Based on Charles Spearman's view of intelligence, individuals who excel in:
a. one academic area are likely to perform poorly in other academic areas b. academics early are likely to "burn out" when they are older c. one academic area are likely to excel in most academic areas d. academics are also likely to be gifted athletes and musicians
Echoic memory involves a brief flurry of activity in the auditory system that lasts for up to __________ second(s)
a. one-half b. two c. six d. 10