Describe the strengths and weaknesses of cross-sectional and longitudinal research
What will be an ideal response?
The advantages of the cross-sectional study include that the data can be collected in a short period of time and it does not require long-term cooperation between the researchers and the participant. The disadvantages of the cross-sectional study include that individual changes cannot be assessed and the problem of cohort or generation effects. The advantages of the longitudinal study include the ability to assess individual change. The disadvantages of longitudinal research include that it is time consuming, bias can be created when participants drop out of the study, and the potential for practice effects.
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Young infants cannot appreciate the carnival game in which a pea seems to disappear from under a walnut because they have not yet developed a sense of:
a) conservation. b) object permanence. c) accommodation. d) egocentrism.
Infants are particularly adept at differentiating ______ sounds
a. animal c. speech b. musical d. potentially dangerous