Which of the following ADHD medications is not a stimulant?

A. Hallucinations are a core positive symptom of schizophrenia and involve false sensory perceptions without an external stimulus (e.g., hearing voices, seeing things that are not there). According to the DSM-5, hallucinations are one of the three essential symptoms that must be present for a diagnosis.

B. Delusions are fixed, false beliefs that persist despite evidence to the contrary (e.g., persecutory delusions, grandiose delusions). Delusions are a hallmark symptom of schizophrenia and are required as a diagnostic criterion if present.

C. Disorganized speech reflects disorganized thinking, a key symptom of schizophrenia. It includes incoherence, tangentiality, and word salad, demonstrating the cognitive dysfunction associated with the disorder. If disorganized speech is present, it fulfils one of the primary diagnostic criteria.

D. Negative symptoms such as avolition, anhedonia, alogia, and flat affect, are common in schizophrenia but are not required for diagnosis. According to the DSM-5, at least one of the following three symptoms hallucinations, delusions, or disorganized speech must be present to meet the diagnostic criteria for schizophrenia.

A. Depressed type. Schizoaffective disorder, depressive type, involves schizophrenia symptoms (delusions, hallucinations, disorganized thinking) along with major depressive episodes. There is no history of mania or hypomania, distinguishing it from the bipolar type.

B. Unspecified type. Schizoaffective disorder, unspecified type, is used when the clinician determines that the patient meets criteria for schizoaffective disorder but does not clearly fit into the bipolar or depressive subtypes.

C. Anxiety type. There is no "anxiety type" of schizoaffective disorder. While individuals with schizoaffective disorder may experience anxiety, it is not a defining feature. Anxiety disorders are separate conditions and do not define a subtype of schizoaffective disorder.

D. Bipolar type. Schizoaffective disorder, bipolar type, is diagnosed when schizophrenia symptoms occur alongside manic or mixed episodes, with or without depressive episodes. This distinguishes it from the depressive type, which lacks manic symptoms.