These repetitive behavioural responses are accompanied by obsessions and appear to serve the function of reducing the anxiety created by frequently disturbing thoughts:

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Compulsions are repetitive behavioral responses that are driven by obsessive thoughts and serve to reduce the anxiety caused by these thoughts. Manias refer to a period of excessive excitement, energy, and overactivity. Hallucinations are false sensory perceptions, such as hearing voices or seeing things that are not there. Delusions are false beliefs that are strongly held despite evidence to the contrary.

These Repetitive Behavioural Responses Are Accompanied by Obsessions and Appear