People with stuporous catatonia may also show stereotyped, repetitive movements (stereotypy). A stereotypy is a repetitive behavior related to mental impairment. A stereotypy (, or ) is a repetitive or ritualistic movement, posture, or utterance. It is distinguished from stereotypy (a highly repetitive idiosyncratic behaviour). There are several possible explanations for stereotypy, and different stereotyped behaviors may have different explanations. This might have been done in order to avoid the stereotypy of models. Tail chasing can be classified as a stereotypy. The reason for this was increased stereotypy. Several causes have been hypothesized for stereotypy, and several treatment options are available.