Date of Award
An individual’s depression level was measured as a function of their birth order. An individual’s personality style was also evaluated based as a function of their birth order. Individuals were classified into one of five categories based on their birth order: oldest, middle of three, middle of four or more, youngest, and only child. Results indicated that birth order is not a significant dimension when it comes to evaluating depression levels. Youngest children and only children typically showed higher depression levels on a Beck Depression Inventory. Results also showed that birth order was a factor that should be considered when it comes to determining an individual’s style of personality. Middle children, particularly those in a family of three, showed a high level of introversion. Middle children of families of four or more showed a higher score of feeling, or being emotional, than they did as a thinker or intellectual. A significant majority of the participants also showed more ‘judger’ characteristics, which include being on time and following rules and norms.
Miller, Andrew, "Birth Order’s effects on Depression Levels and Personality Styles" (2009). Psychology Undergraduate Theses. 22.