The most widely discussed threat to the accuracy of longitudinal findings is
A) practice effects.
B) cohort effects.
C) selective attrition.
D) biased sampling.
Answer: B
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Developmental tasks can be viewed as
a. the physical challenges in a stage of development. b. the unfolding of the epigenetic principle. c. competencies that lead to mastery of the environment. d. unrelated to stages of a person's development.
In young mammals, including humans, infant distress caused by either internal states (such as hunger) or separation from the mother is associated with a reduction in
a. amygdala. c. opioids. b. stress hormones. d. attachment.
The body mass index (BMI)
A) ?is a measure of total weight. B) ?considers both age and gender in calculating obesity. C) ?is defined as a person's height (in meters) divided by body weight (in kilograms) squared. D) ?is defined as body weight (in kilograms) divided by height (in meters) squared.
If your research plan started with a static-group comparison design, then you added a pretest to the design, your new plan would involve a
a. nonequivalent control group design. b. one-group pretest-posttest design. c. static-group comparison design d. time series design.