To measure the effects of task complexity on an individual's perception of time, a researcher has one group of participants do simple addition problems and another group solve complex mathematical formulas. Both groups are then asked to estimate the time
Later, the researcher finds out that the participants given the complex task were in a room with higher noise levels than the other group. In this study, the noise level would be considered an example of
a. the placebo effect.
b. a dependent variable.
c. a confounding variable.
d. an independent variable.
Answer: c. a confounding variable.
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What does it mean if a test has high reliability?
a. Scores on the test predict performance of some other outcome. b. The test measures what the test was intended to measure. c. Someone who does well on this test will probably do well on other tests also. d. Someone who takes the test twice will probably get similar scores.
An individual's unique constellation of consistent behavioral traits is known as
a. collectivism. b. individualism. c. personality. d. an archetype.
The gate-control theory of pain suggests that ___________
a) the pain signals must pass through a neurological portal located in the spinal cord b) the skin receptors act as a gate for the pain sensation c) the cortex blocks pain unless released by substance P d) the gate is a physical structure that blocks pain signals
Physical activity
A) improves mood, but decreases alertness. B) reduces anxiety and depression. C) increases the risk of diseases associated with smoking. D) decreases neural activity in the cerebral cortex.