1. Asch, S. E. (1946). Forming impressions of personality. Journal of Abnormal and Social Psychology, 41, 258–290.
2. Bitan, K., Haep, A., & Steins, G. (2013). Psychology of emotion and its application in educational settings. In C. Mohiyeddini, M. Eysenck, & S. Bauer (Hrsg.), Handbook of psychology of emotions: Recent theoretical perspectives and novel empirical findings (Bd. 1, S. 101–114). New York: Nova Publisher.
3. Bradburn, E. (1960). Friendliness in schools. Educational Review, 12, 112–124.
4. Büchner, K., & Seneca, L. A. (1992). De clementia/ Über die Güte. Ditzingen: Reclams Universal-Bibliothek.
5. Cornelius-White, J. (2007). Learner-centered teacher-student relationships are effective: a meta-analysis. Review of Educational Research, 77, 113–143.