Читать книгу The Research Experience - Ann Sloan Devlin - Страница 136

In statistical regression, the performance (scores) of participants who are at the extremes on a given measure will move toward the mean on subsequent administrations. In theory, you could address this issue by pretesting participants to avoid those with extreme scores, but if those with extreme scores are a focus of the research (e.g., low and high crossword puzzle–solving skills), then being aware of regression toward the mean is important in evaluating the impact of any intervention.