Suppose that you conducted an experiment to test the effects of violence in TV shows on the aggressiveness in children. The dependent variable in this study would be ____
a. how violent the TV shows were
b. how many hours of violent shows the children needed to watch before they became violent
c. how violent the parents of the children were
d. how aggressive the children were
D
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Jessica is conducting a study of the personality of eighth-graders with high achievement motivation. She discovers from statistical analysis that her test's items are measuring more than one concept. You might tell Jessica that she has a problem with
A. internal consistency. B. reliability. C. statistical significance. D. predictive validity.
Wayne Dennis conducted research with Iranian orphans who spent the first two years of life lying flat on their backs. This research provided support for the idea that
a. motor development is primarily influenced by hereditary factors. b. maturation is necessary but not sufficient for the development of motor function. c. the extent of stimulation in the environment has no direct impact on the development of motor function. d. motor development is solely influenced by environmental stimulation.
Evidence that the average IQ of people in the developed world showed steady increases over the decades of the 20th century is called
a. the cumulative deficit effect. c. the Pygmalion effect. b. the Flynn effect. d. the positive manifold.
_____ is a procedure which allows us to predict an individual's score on one variable based on knowing one or more other variables
a. Pearson product-moment correlation coefficient b. Coefficient of determination c. Regression analyses d. Point-biserial correlation coefficient