You can feel that there are two rods touching your cheeks, but have difficulty feeling two rods if you are touched with them on your calves. This is because
a. touch receptors are more densely packed in your calves.
b. touch receptors are more densely packed in your cheeks.
c. more of the sensory cortex is devoted to the perception of sensation on the face.
d. Both b and c.
D
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A factor other than the independent variable that varies between conditions of an experiment is called a(n)
a. confound. b. experimenter effect. c. subject effect. d. expectancy effect.
Which of the following is used for a definitive diagnosis of Alzheimer's disease dementia?
a. Psychological testing b. Mental status exam c. Autopsy d. Reported observations of the patient by family members
How much time do most newborns spend crying each day?
a. 30 minutes c. 2 to 3 hours b. 1 hour d. 4 to 5 hours
In the context of effect size, the r2 value is sometimes referred to as the
A. difference between the highest and the lowest scores. B. range of possible values that is restricted. C. percent of shared variance between the two variables. D. magnitude of the correlation coefficient.