Who is defined as a 'Client or patient' in the psychology field?

In the psychology field, a "client or patient" is defined as an individual receiving psychological services. This definition is central to the practice of psychology, as it emphasizes the relationship between the mental health professional and the individual seeking help. The client or patient is the person who engages with a psychologist to address mental health issues, receive therapy, or seek counseling, thus placing them in the position of receiving care and support.

Understanding this definition is crucial because it delineates the roles and responsibilities within a therapeutic environment. The focus is on the individual who is actively participating in a treatment process, making them the central figure in clinical settings. The other options do not fit this definition: those conducting research, providing therapy, or being part of a psychological association are in different roles within the field that do not involve receiving psychological services.