The document discusses several major models of psychotherapy:
1) Psychodynamic model (Sigmund Freud), Cognitive-Behavioral model (Albert Ellis, Aaron Beck), Existential-Humanistic model (Carl Rogers, Rollo May), and Multicultural model.
2) Key techniques discussed include free association, dream analysis, cognitive restructuring, Socratic questioning, reflection, and confrontation used in therapies like psychoanalysis, CBT, person-centered therapy and rational emotive behavior therapy.
3) The cognitive-behavioral and rational emotive behavior therapy models make use of techniques like systematic desensitization, modeling, and disputing irrational beliefs through logical arguments.