George Kelly was influenced by J.L. Moreno Wikipedia. The interesting thing I just learned from my friend Don is that Kelly in turn was an influence on Beck, one of the founders of CBT.
Makes sense, in that the work of Moreno is about the whole person, thoughts, feelings and action, the individual, the collective, the practical, the relational and the cosmic.
In the psychotherapy I do it is useful to move along the continuum of role training on the one hand and the psychological roles and the psychodynamic aspects that Moreno called the psychodramatic.