Literature Review for a research proposal (Psychology) –

Literature Review for a research proposal (Psychology)
Write an essay (1,250 words) using the following as a guide:
Summarize existing literature in relation to the proposed research question.
Include different perspectives on the chosen topic.
Explain how the proposed research can add to the existing literature.
Include at least eight references from scholarly sources.
Prepare this assignment according to the APA guidelines
This is my topic:
Research question
The main objective of this research is to find answers to the following research questions.
Does Psychosocial Rehabilitation (PSR) improve treatment outcomes?
Is there a discernable difference between the treatment outcomes of those who participate in counseling and those who have received both counseling and PSR services?
It could be difficult to find a lot of literature on this topic. Literature on psychoeducational forms of treatment would be great also. PSR is a psychoeducational service, so research that examines psychoeducational treatments would also be appropriate.