The common factors are various counseling ingredients that are
hypothesized to exist across all counseling theories. The counseling
relationship is
one common factor that has persisted for 80 years.
The common factors were first proposed by Rosenzweig (1936), who noticed
that most counseling theories seemed to be effective for treating a
range of mental health concerns. Rosenzweig called this observation
the Dodo Bird Effect, after the dodo bird in Lewis
Carroll's book Alice in Wonderland who remarked
"Everybody has won, and all must have prizes". The common
factors proposed by Rosenzweig were:
Components of the therapeutic relationship
The therapist's personality
Catharsis
Interpretations
Providing clients with a way to conceptualize
themselves and their mental health symptoms