Clinical psychologists work with an extraordinarily wide range of people, from toddlers to older adults in their 80s and 90s, across nearly every type of emotional, behavioral, and cognitive challenge. They see individuals, couples, families, and groups. They treat people dealing with everyday stress and relationship conflict as well as those managing serious, chronic conditions like PTSD, psychosis, and addiction. And unlike the stereotype of a therapist in a quiet private office, many clinical psychologists spend their careers in hospitals, courtrooms, schools, research labs, and military settings.
Clients Across the Age Spectrum
Clinical psychologists serve every age group, though the balance of demand is shifting. According to American Psychological Association workforce projections, the fastest-growing need is among older adults: demand for psychologists serving people 75 and older is projected to increase 71% between 2015 and 2030, while demand for the 65-to-74 age group is expected to rise 40%. This reflects aging-related concerns like cognitive decline, grief, adjustment to retirement, and the psychological toll of chronic illness.
At the other end of the spectrum, clinical psychologists work extensively with children and adolescents. The demand for psychologists serving kids ages 6 to 12 accounts for roughly 15,000 full-time positions nationally, often focused on learning difficulties, behavioral disorders, anxiety, and developmental concerns. Young children under 6, teens, and young adults round out the picture, with clinical psychologists adapting their methods to each developmental stage.
Mental Health Conditions They Treat
The scope of what clinical psychologists address is broad. On the less severe end, they help people navigate relationship conflict, work stress, life transitions, and grief. On the more complex end, they diagnose and treat conditions like major depression, anxiety disorders, PTSD, obsessive-compulsive disorder, eating disorders, personality disorders, substance use disorders, and psychotic conditions like schizophrenia. The range spans short-term situational problems to conditions that require years of ongoing care.
Clinical psychologists differ from psychiatrists in one important way: they cannot prescribe medication in most states. Instead, their primary tools are forms of therapy, including cognitive behavioral therapy, psychoanalytic therapy, and dialectical behavior therapy. This means they typically see clients more frequently than psychiatrists do, often weekly for an hour, compared to the every-two-or-three-month medication check-ins that characterize psychiatric care. When medication is needed, clinical psychologists coordinate with psychiatrists or primary care doctors to provide combined treatment.
Individuals, Couples, Families, and Groups
While one-on-one therapy is the most familiar format, clinical psychologists also work with couples, families, and therapy groups. Couples therapy addresses communication breakdowns, attachment issues, and specific challenges like navigating ADHD within a relationship. Family therapy is common when a child’s behavioral issues affect the whole household, or when families are coping with a member’s substance use disorder or serious mental illness.
Group therapy is a particularly active area. Large medical centers like NYU Langone offer more than 30 different therapy groups, covering everything from social anxiety to substance use recovery. Group approaches have proven effective for people facing terminal illness (helping them find meaning), domestic violence survivors, refugees processing displacement and trauma, and individuals with serious mental illness working to reduce internalized stigma. The group format works because shared experience creates a sense of belonging that individual therapy alone sometimes cannot.
Specialized Populations
Many clinical psychologists focus their careers on specific populations with unique needs. Veterans and active military personnel represent a major group, particularly for trauma-related conditions. Refugees and immigrant communities require clinicians who understand intergenerational trauma and cultural context. Some psychologists have developed approaches specifically for indigenous populations dealing with the psychological effects of historical and ongoing oppression.
People with neurodevelopmental conditions like autism spectrum disorder and ADHD are another core population, especially in pediatric settings. Clinical psychologists conduct the detailed assessments needed for diagnosis and design behavioral interventions tailored to each person’s needs. They also work with people facing chronic medical conditions (cancer, chronic pain, HIV) where the psychological burden of illness is significant and intertwined with physical health outcomes.
Clients in the Legal System
Forensic clinical psychologists work with people whose mental health intersects with legal proceedings. On the criminal side, this includes defendants whose competency to stand trial is in question, individuals entering insanity defenses, and people who have been acquitted by reason of insanity and need treatment before reintegrating into the community. On the civil side, they evaluate people involved in personal injury lawsuits, child custody disputes, workers’ compensation claims, and guardianship cases.
Their “clients” in forensic settings extend beyond the individual being evaluated. Forensic psychologists also work with attorneys, judges, insurance claim specialists, employers, and institutions like schools and universities. They provide expert testimony, conduct risk assessments, and help courts make informed decisions about people whose psychological state has direct legal consequences.
Other Professionals They Collaborate With
Clinical psychologists rarely work in isolation. In hospital and inpatient psychiatric settings, they function as part of multidisciplinary teams alongside psychiatrists, psychiatric nurses, occupational therapists, social workers, and clinical managers. Each professional brings a different lens. The psychologist typically contributes psychological testing, therapy, and behavioral analysis, while the psychiatrist handles medication and medical oversight.
In outpatient settings, clinical psychologists coordinate with primary care physicians, neurologists, and other specialists. This collaboration matters because psychological symptoms can sometimes have medical causes, and physical conditions frequently have psychological components. A clinical psychologist treating someone for depression, for instance, may need to communicate with that person’s endocrinologist to rule out thyroid dysfunction.
Where They Practice
The setting shapes who a clinical psychologist sees day to day. Bureau of Labor Statistics data shows the largest concentration of clinical and counseling psychologists, roughly 29,000, work in health practitioner offices (essentially private and group practices). Another 7,400 work in outpatient care centers, 6,700 in physician offices, 6,600 in individual and family services organizations, and 4,200 in general hospitals. Smaller but significant numbers work in psychiatric hospitals, residential care facilities, and research institutions.
Beyond these clinical settings, about 24% of psychologists are self-employed, running independent practices. Another 24% work in elementary and secondary schools, where they assess learning disabilities, support students through behavioral crises, and consult with teachers and parents. Government agencies employ about 8%, including the Department of Veterans Affairs and federal prisons. And in academic settings, clinical psychologists train the next generation of practitioners while conducting research, with graduate students reporting an average workweek of over 55 hours as they balance clinical training, coursework, and dissertation research.
Research Participants and Trainees
Clinical psychologists in academic and research roles work with populations that go beyond traditional therapy clients. They design and run studies with research participants, testing new treatments and refining existing ones. They also mentor graduate students and interns, a relationship that is central to the field’s training model. The standard path to becoming a clinical psychologist includes a year-long predoctoral internship and an empirical dissertation, both supervised by experienced clinicians.
Faculty survey data reveals that nearly all clinical psychology students (98%) rely on one-on-one guidance from faculty mentors, and many participate in cross-disciplinary teams involving neuroimaging centers, genomics labs, and data science programs. In these settings, the clinical psychologist’s role is to bring psychological expertise to collaborative research that spans multiple scientific fields.