Research on heredity and socioeconomic status has found that heredity has ______
a. no bearing on IQ in either impoverished families or affluent families
b. no bearing on IQ in impoverished families, but has an impact in affluent families
c. no bearing on IQ in affluent families, but has an impact on impoverished families
d. a strong bearing on IQ in both impoverished and affluent families
B
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In women, the most common age of onset for schizophrenia is between ________
a. 12 and 18 c. 25 and 35 b. 18 and 25 d. 35 and 45
Which one of the following is a specific guideline for writing multiple-choice items?
A. make all responses similar in detail and length B. use words such as "always" or "never" to distinguish distractors C. use inclusive distractors D. avoid having one choice that is clearly correct
The assumption that the variances are equal for two or more groups is
a) homogeneity of variance b) heterogeneity of variance. c) error variability. d) between-groups variability.
In the context of what we see in our world, the range of wavelengths that humans can detect is called the
A. mass spectrum. B. visual spectrum. C. frequency spectrum. D. power spectrum.