What is the key flaw in studies of the effect of exercise on mental abilities in which comparisons are made between regular exercisers and sedentary adults?
a. The exercisers use so many different forms of exercise that we can't be sure what works.
b. Sedentary subjects may actually exercise somewhat but not report it.
c. Those who choose to exercise may be different in other significant ways from those who choose to be sedentary.
d. The samples of exercisers are normally younger than the samples of sedentary adults to whom they are compared.
C
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Abnormal behavior can be considered a combination of
a. emotion, cognition, and behavior. b. observable behavior, unobservable thoughts, and resiliency. c. physical and metaphysical aspects. d. who we are and what we already know.
Which of the following is an example of a primary sex characteristic?
A. breast development B. vocal features C. pubic hair D. Fallopian tubes
Which of the following statements accurately describes the sampling distribution of means?
a. The distribution of several sample means when an infinite number of samples of the same size N are selected from one raw score population. b. The distribution of all possible sample means when a given finite number of samples of the same size N are selected from one raw score population. c. The distribution of all possible sample means when an infinite number of samples of variously sized Ns are selected from several raw score populations. d. The distribution of all possible sample means when an infinite number of samples of the same size N are selected from one raw score population.
Because of the revolution in public health that eliminated many infectious diseases and controlled many more, today some of the major contributing factors to illness and death in the United States are
A. viral and bacterial. B. behavioral and psychological. C. neurological and endocrinological. D. pharmacological and hormonal.