The number of scores that can vary in the calculation of a statistic is called ______.
a. the degrees of freedom
b. homogeneity of variance
c. multivalent variable
d. the null hypothesis
Ans: A
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Ben is a typical infant. He was 21 inches long and 8 pounds at birth. Assuming normal growth, what is a realistic estimate of his measurements at age 6 months?
A) 30 inches and 12 pounds B) 36 inches and 12 pounds C) 42 inches and 16 pounds D) 45 inches and 23 pounds
Animal species with __________ life expectancies tend to display __________ free-radical damage to DNA
A) longer; slower rates of B) shorter; slower rates of C) longer; faster rates of D) shorter; little to no
Professor Kay thinks that Freud's view that sex played a central role in psychological conflict was exaggerated. He thinks interpersonal relationships and the social context are very important to psychological development
Professor Kay is probably a __________. a. neo-analytic theorist b. cognitive-behavioral theorist c. humanistic theorist d. behaviorist
Research may not require approval by an Institutional Review Board if
a. it occurs in a commonly accepted educational setting and assesses instructional strategies.. b. it involves only passive deception. c. a similar study has already been done elsewhere with no ethical problems. d. it involves studies of children.