Coherence therapy is considered a type of psychological constructivism. It differs from some other forms of constructivism in that the principle of symptom coherence is fully explicit and rigorously operationalized, guiding and informing the entire methodology. The process of coherence therapy is experiential rather than analytic, and in this regard is similar to Gestalt therapy, Focusing or Hakomi. The aim is for the client to come into direct, emotional experience of the unconscious personal constructs (akin to complexes or ego-states) which produce an unwanted symptom and to undergo a natural process of revising or dissolving these constructs, thereby eliminating the symptom. Practitioners claim that the entire process often requires a dozen sessions or less, although it can take longer when the meanings and emotions underlying the symptom are particularly complex or intense.