Vestewig R E
J Psychol. 1977 Nov;97(2d Half):237-45. doi: 10.1080/00223980.1977.9923969.
One hundred seventy-eight male and female undergraduates completed the Eysenck Personality Inventory and indicated their risk preference assessed under the assumptions of Coombs' portfolio theory. Extraverts preferred higher risk significantly more than did introverts, and also showed significantly greater risk preference change as expected value increased. It was suggested that a theoretically defensible selection of both personality variables and a risk assessment model may lead to greater personality-risk predictability.
178名男女本科生完成了艾森克人格问卷，并根据库姆斯投资组合理论的假设表明了他们的风险偏好。外向者比内向者更明显地偏好更高的风险，并且随着期望值的增加，他们的风险偏好变化也更显著。研究表明，从理论上合理选择人格变量和风险评估模型可能会提高人格与风险之间的预测性。
