Professor Higgins is concerned about the findings of a longitudinal study on childhood depression that she conducted between 198
5 and 2015 in New York because many of the participants witnessed the terrorist attacks on the World Trade Center. Professor Higgins is concerned about __________ effects.
Cohort effect: The cohort effect defines the variations or alterations in the characteristics of any given area of study, for example, the age at onset over time among different individuals who are being defined by common life experiences (year of birth) or few shared experiences. Researchers use cohort effect while conducting cross-sectional studies or developmental studies.
