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Mathematics, 12.07.2019 20:30 Jrstx333

Aresearcher decides to investigate whether there are any changes in people’s iq scores from early adulthood through late adulthood. the researcher (and others) begins with a sample of 21-year-olds and plans to follow this group until they are 80 years old. the type of research design she is planning to employ is called a design. cross-sectional longitudinal time-lag sequential

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