In a matrix representing the structure of a factorial design, the mean differences among the columns define ____
a. the main effect for one factor
b. the interaction between the factors
c. the main effect and the interaction between the factors
d. the significance level
a
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Which of the following statements about Francis Galton is incorrect?
a. He was an early member of the cognitive approach to intelligence. b. He attempted to measure intelligence through tests such as sensory discrimination. c. Like Charles Darwin, he was deeply committed to the idea of survival of the fittest. d. His tests were later shown to be poor predictors of actual intellectual performance.
Dr. Sanders was excited to observe the effects of leptin on her obese laboratory mice and began to explore ways that leptin could be used to help people lose weight. It is likely that Dr. Sanders will a. be equally successful with humans as with mice, once the side effects of leptin are controlled
b. not be successful with humans, because humans do not make leptin. c. not be successful with humans, because obese humans are already producing high amounts of leptin and adding more would not help them lose weight. d. not be successful with humans, because obese humans do not have receptors for leptin.
Which of the following BEST describes the critical difference between introspection and measurements of reaction time in psychological study?
A. Introspection is a less objective measure than reaction times. B. Introspection is commonly used by empiricists, and reaction times are more commonly used by physiologists. C. Introspection is a newer technique than measures of reaction time. D. Measures of reaction time are more prone to bias than is introspection.
Money and Ehrhardt (1972) said, "Nature's rule is, it would appear, that to masculinize, something must be added." The "something" is
a. estrogen b. progesterone c. testosterone d. interstitial cell stimulating hormone