bifactor theory

例句：

1. 1. The bifactor theory has been widely applied in psychology and education.
   双因素理论在心理学和教育领域得到了广泛应用。
2. 2.The bifactor theory provides a useful framework for understanding personality traits.
   双因素理论为理解人格特质提供了一个有用的框架。
3. 3. The bifactor theory has been used to study the relationship between stress and health.
   双因素理论被用来研究压力与健康之间的关系。