Taste Aversion Learning

Abstract

Learned avoidance of a specific food resulting from negative postingestive consequences is known as taste aversion learning (TAL) or flavor aversion learning. Although TAL causes avoidance behavior, taste aversion is a unique category of avoidance. Taste aversions arise specifically from exposure to stimuli that produce nausea and a qualitative shift in palatability (Pelchat, Grill, Rozin, & Jacobs, 1983). Taste aversions are the product of a hard‐wired system connecting the nose and mouth, gastrointestinal tract, and brain that allows animals to learn about toxic foods and limit intake (Provenza, 1995). Subsequent to this affective (subconscious) process, taste is further integrated with other sensory attributes of the food, such as color, odor, or texture. Such cognitive associations are said to be potentiated by taste because aversions are formed to the taste cue first. Together, these affective and cognitive processes yield an adaptive system that enables animals to learn which foods are safe to eat and which are not.

Food Restriction in Anorexia Nervosa in the Light of Modern Learning Theory: A Narrative Review

“…Subsequent to this affective (subconscious) process, taste is further integrated with other sensory attributes of the flavour, such as odour or texture. Together, these affective and cognitive processes yield an adaptive system that enables organisms to learn which foods are safe to eat and which are not [89].…”