behavior that is unlike the majority of a healthy human population- behaviors which could pose a threat to one's livelihood or well-being. Frequently, abnormal behavior is viewed as being symptomatic of underlying problems ranging from emotional traumas to mental illness.

ABNORMAL BEHAVIOR: "Andrew's abnormal behavior was disturbing enough to warrant a mental health examination prompted by his parents."
Cite this page: N., Pam M.S., "ABNORMAL BEHAVIOR," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/abnormal-behavior/ (accessed October 20, 2021).