Final answer:
True. Psychological disorder classification schemes use a medical model, as represented by the DSM, but it's important to recognize that perspectives on mental health can vary across cultures.
Step-by-step explanation:
The classification schemes for psychological disorders indeed use a medical model, assuming that abnormal behavior can be described using the same methodology as physical illness. This approach is exemplified by the publication and use of the Diagnostic and Statistical Manual of Mental Disorders (DSM) by the American Psychological Association. This manual is central to diagnosing a wide range of mental health conditions, from personality disorders to substance use disorders, and is utilized by clinicians to evaluate the symptoms for a proper diagnosis.
While these classification systems provide structure and guidance for mental health professionals, it's crucial to note that the diagnosis and understanding of psychological disorders continue to evolve. Cultural considerations, as seen in medical anthropologists' work, acknowledge that mental illness treatment and the stigmatization surrounding it vary significantly across different societies. Hence, while it is true that a medical model is used for classification, this does not capture the entirety of global perspectives on mental health and its disorders.