Final answer:
Psychoanalysis is not effective in symptom reduction for the treatment of schizophrenia.
Step-by-step explanation:
The type of therapeutic intervention that is not effective in symptom reduction for the treatment of schizophrenia is c) Psychoanalysis. Psychoanalysis is a type of therapy that focuses on exploring a person's unconscious thoughts and emotions, which may not be as effective in addressing the specific symptoms of schizophrenia.