Final answer:
Antipsychotic medications serve as dopamine receptor antagonists to reduce positive symptoms in schizophrenia.
Step-by-step explanation:
To reduce positive symptoms in schizophrenia, antipsychotic medications serve as antagonists for the dopamine receptors. These medications block the effects of dopamine by binding to its receptors without activating them. By doing so, they prevent dopamine from signaling information to adjacent neurons, which helps in reducing hallucinations, delusions, and disorganized thinking.