Final answer:
According to Prochaska and Norcross, psychotherapy includes techniques such as psychoanalysis, behavioral, and humanistic therapy aimed at treating psychological issues, but not medication therapy, which is a biological intervention.
Step-by-step explanation:
Prochaska and Norcross's definition of psychotherapy would include various therapeutic approaches intended to treat psychological disorders or issues through structured interactions between a therapist and a client. These methodologies would encompass techniques such as psychoanalysis, which delves deep into past experiences and unconscious thought processes; behavioral therapy, which focuses on modifying problematic behaviors; and humanistic therapy that emphasizes personal growth and self-actualization as spearheaded by theorists like Carl Rogers.
However, Prochaska and Norcross's conception of psychotherapy would not include medication therapy, as this involves the prescribing and management of pharmaceuticals with the primary aim of influencing brain chemistry to alleviate symptoms of mental disorders. Medication therapy is typically seen as a biological intervention, not a psychotherapeutic one, and would thus not fall under the umbrella of psychotherapy approaches they define.