A psychologist is conducting a study on the effect of music on math ability. She hypothesizes that participants who listen to classical music will perform better on a math test than those who listen to pop music. She randomly assigns participants a music condition (classical or pop) and then asks them to complete a timed measure of math ability. Which variable in her study is the independent variable?
A. Music type
B. Math ability
C. Math speed
D. Music preference
Answer: A
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a. template-matching theory b. subjective-contour theory c. feature-analysis theory d. recognition-by-components models
An important difference between the organizing and activating effects of hormones is that activating effects ______.
A. are always temporary B. are permanent C. occur anytime in the individual's lifetime D. usually occur early in development
Which of the following is a typical hearing difficulty experienced by older adults?
A) Loss of ability to hear low-frequency sounds B) Difficulties in word discrimination C) Problems hearing when conditions are quiet D) Inconsistent amplification of deep or bass-like sounds