The difficulty index of a test item equals the difference in the proportions of examinees in the
upper and lower groups on total test score who get the item right.
Indicate whether the statement is true or false
FALSE
Psychology
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Approximately what percentage of scores are between z=1 and z=2?
a. 50 b. 68 c. 16 d. 13.5
Psychology
If lines cross or are interrupted, people tend to still see continuously flowing lines. This is a statement of the Gestalt law of:
a. common fate b. good continuation c. similarity d. closure
Psychology
People who have had their stomachs removed ____.?
a. ?still become hungry b. ?cannot eat high calorie foods c. ?cannot eat low calorie foods d. ?do not become hungry
Psychology
Each of the objectives of a survey must be
a. rationalized. b. reliable and valid. c. operationalized. d. objectified.
Psychology