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In a continuous distribution the
Longitudinal Personality Development Studies
Research studies that follow the same individuals over a period of time to observe changes in their personality.
Cohort Effect
The tendency for a research finding to be limited to one group, or cohort, of people, such as people all living during a particular era or in a particular location.
Attrition
The reduction in the number of participants or subjects in a study due to dropouts or failure to follow up.
Cross-Sectional Study
A study of personality development in which people of different ages are assessed at the same time.
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