Fellowship in Sexology and Psychosexual Counseling. For More info WhatsApp- 9604715783/9359863878. PLISSIT model: Sexual problem, where there is no organic cause, can be effectively tackled by the use of PISSIT model of sexual counselling. This is behavioral treatment for sexual problem. This is based on the beliefs that human behavior is a learned process. Maladaptive behavior can be unlearned and positive behavior can be substituted. PLISSIT Model was formulated by John Annon in 1976. This model suggests therapeutic interventions at 4 levels.