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Unformatted text preview: Many times participants drop out and the study will become biased. Sequential Approach Sequential approach is combined cross-sectional and longitudinal design. This approach starts with cross-sectional and includes subjects of different ages. The same are tested again, which brings in the longitudinal study. This approach is complex, expensive, and time consuming, but does provide information that is impossible to obtain from just one of the studies alone. Cohort Effects Cohort effects are effects due to a persons time of birth, era, or generation but not actual age. They are important because they can powerfully affect the dependent measure in a study concerned with age....
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This note was uploaded on 04/30/2008 for the course PSY 235 taught by Professor Pak during the Spring '08 term at Rhode Island.
- Spring '08
- Developmental Psychology