The subject matter of psychology: Volunteers

Abstract

Scores on the scales and subscales of the Eysenck Personality Inventory were obtained from a sample of 1421 undergraduate students. The students were also asked to indicate their willingness, in principle, to participate in further research. The scale scores obtained do not depart greatly from those norms given by Eysenck for American college students. Females are somewhat more likely to volunteer than males, and, generally, extraverts are more likely to volunteer than introverts. However, a logistic regression analysis showed that Neuroticism‐Stability interacts with Extraversion‐Introversion to increase or decrease the probability of volunteering. The results may have important implications for research findings based on data collected from volunteer subjects.