Which of the following statement regarding dual sex therapy is true?
The theoretical basis of dual-sex therapy is the concept of the marital unit or dyad as the object of therapy. In dual-sex therapy, treatment is based on a concept that the couple must be treated when a dysfunctional person is in a relationship. Because both are involved in a sexually distressing situation, both must paicipate in the therapy program. Dual sex therapy aka "Master and Johnson therapy".
Patient alone is not treated
Uses sildenafil
It treats sexual perversions
It is used for people with dual gender identities