The variance of a set of scores is
a. the square root of the standard deviation.
b. the mean of the squared differences of each score from the mean score.
c. equal to the square root of the range.
d. always greater than 1.
e. the square of the correlation coefficent.
b. the mean of the squared differences of each score from the mean score.
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Most neglected children
A) report feeling especially lonely compared to others. B) are just as socially skilled as average children. C) have poor cooperation skills and tend to lash out. D) report feeling unhappy about their social life.
In a classic experiment, a psychologist read a short passage in Greek to his son every day when the boy was between 15 months and three years of age. At age eight, he was asked to recall the passage, to recognize the passage, and later to memorize the original quotations and others of equal difficulty. The results of the experiment showed that the boy was
a. able to recall the passage at age eight. b. able to recognize the passage when presented with the original passage and other Greek passages. c. able to exhibit evidence of relearning by memorizing the original passage 25 percent faster than the other Greek passages. d. unable to do any of these three memory tasks.