What would be the very best research design to determine whether middle-aged adults are really more psychologically "mature" than young adults?
a. a longitudinal design, with a large representative sample studied from 20 to 45
b. a cross-sectional study in which a large, representative sample of adults of each age from 20 to 45 (e.g., 20-year-olds, 25-year-olds, etc.) is studied once
c. the same cross-sectional design as in b, but repeated at 10-year intervals
d. a sequential design in which each age interval is studied longitudinally in more than one cohort
d
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Describe several criticisms of Elisabeth Kübler-Ross's theory of death and dying.
What will be an ideal response?
The example in Chapter 11 of predicting weight from height and sex showed that
a. adding sex as a predictor accounted for an important source of variability. b. there is a much stronger relationship between height and weight in males than in females. c. sex is not a useful predictor in this situation. d. we cannot predict very well, even with two predictors.
Improvement in ______ is the main reason childhood mortality has declined
Fill in the blank with correct word
The prenatal period during which tremendous growth occurs and the organs continue to develop is called the ________ period
a. germinal b. embryonic c. fetal d. gestational e. zygotic