What are positive symptoms of psychosis?

Positive symptoms of psychosis refer to an excess or distortion of normal functions, which primarily includes delusions and hallucinations. Delusions are false beliefs that are not grounded in reality, such as the belief that one has extraordinary powers or is being persecuted. Hallucinations involve perceiving stimuli that are not present, most commonly auditory hallucinations where individuals hear voices.

In the context of psychosis, these positive symptoms are considered 'positive' because they add experiences or behaviors that are not typically present in healthy individuals. This contrasts with negative symptoms, such as emotional blunting or reduced motivation, which reflect a diminution or loss of normal functions. Therefore, delusions and hallucinations are hallmark characteristics that signify the presence of psychosis, making this choice the correct answer.