Student Scholar Symposium Abstracts and Posters

Document Type


Publication Date

Spring 5-2021

Faculty Advisor(s)

Desiree Crevecoeur-MacPhail


The purpose of the current study was to determine the personality differences between college students with siblings and college students without siblings in regard to the Big 5 traits of extraversion, neuroticism, and conscientiousness. Additionally, the research aimed to examine whether college students with siblings engage in higher amounts of social comparison than college students without siblings. It was hypothesized that the group with siblings would score higher in extraversion and social comparison engagement, while the group without siblings would score higher in neuroticism and conscientiousness. The Big Five Inventory (BFI) and Social Comparison Scale were used to measure the participants’ degrees of extraversion, neuroticism, conscientiousness, and social comparison engagement. Data was collected from 51 college students; the group with siblings consisted of 38 participants and the group without siblings comprised of 13 participants. The subjects came from Chapman University and Cal State University Dominguez Hills’ psychology subject pool. The results of the study found that none of the four hypotheses were supported because the differences between the two groups were not statistically significant across all four measures. However, other important findings were reported. For future direction, it is suggested that the number of subjects in the two groups be equal, specifically aiming for an increase in college students without siblings, and a smaller, younger age range of participants.


Presented at the virtual Spring 2021 Student Scholar Symposium at Chapman University.