(原始内容存档于2022-08-02). Kagan, Jerome; Snidman, Nancy; Kahn, Vali; Towsley, Sara; Steinberg, Laurence; Fox, Nathan A. The Preservation of Two Infant Temperaments into
treatment of adults. Int J Psychoanal. 1961, 42: 381–8. PMID 14484851. Steinberg, Laurence. A dual systems model of adolescent risk-taking. Developmental Psychobiology