BEHAVIOR By Nugent, Pam M.S. - April 7, 2013 1.Activity of an organism in response to external and internal stimuli. 2.An action, function that is observable. See behaviourism. BEHAVIOR: "The ants behaviour was in response to poisons released by the spider." Related Psychology Terms BEHAVIOR BIOLOGICAL CLOCK PSYCHOLOGICAL TIME DEMAND GUSTATION EMITTED BEHAVIOR SENSITIZATION STIMULUS FUNCTION ANTIPREDATOR BEHAVIOR NERVOUS SYSTEM Cite this page: Nugent, Pam M.S., "BEHAVIOR," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/behavior-2/ (accessed June 26, 2017).