A(n) __________ refers to a group of people who lived during the same time period
A) cohort
B) constituency
C) peer group
D) age cluster
Answer: A
Rationale: In a cross-sectional developmental study, "cohort" and "generation" refer to similar things. The point of these studies is to compare different age cohorts at a single point in time.
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When six-year-old Molly is working on addition and subtraction problems, her father refuses to let her count on her fingers. According to research, her father's refusal may
A) increase the amount of time it takes for Molly to learn basic addition and subtraction. B) decrease the amount of time it takes for Molly to learn basic addition and subtraction. C) increase Molly's ability to solve mathematical word problems when she is older. D) decrease Molly's ability to solve math problems requiring three or more operations.
Negatives to breastfeeding include:
a. fear of pain. b. undernourishment of some mothers, which results in fewer nutrients in breast milk. c. mother's assumption of the sole responsibility for nighttime feedings. d. All of these are negatives of breastfeeding.