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Deinstitutionalization in AP Psychology

In AP Psychology, deinstitutionalization is the late-20th-century movement of large numbers of people with psychological disorders out of psychiatric hospitals and asylums and into community-based care. Psychotropic medications, especially antipsychotics, made it possible (Topic 5.5).

This definition is part of Fiveable's AP Psychology review, which also has guided practice questions.

Verified for the 2027 AP Psychology exam•Last updated October 2026•Fiveable Content Team

What is Deinstitutionalization?

Deinstitutionalization is the shift from treating people with serious psychological disorders in large, long-term psychiatric hospitals to treating them in their communities. For much of the early 20th century, someone diagnosed with a severe disorder like schizophrenia might live in an asylum for years or even decades. In the late 20th century, hospitals and asylums released massive numbers of patients. The goal was more humane, individualized care closer to home.

The CED is clear about why this happened. Psychotropic medication therapy became more widely used and more effective. Antipsychotic drugs in particular could manage symptoms well enough that many patients no longer needed round-the-clock hospital supervision. Think of it this way. Medication was the key that unlocked the hospital doors, and community care was supposed to be the place patients walked into. The Community Mental Health Act of 1963 pushed this along in the U.S. by funding community mental health centers. Today's preference for decentralized treatment, often combining medication and therapy, is the long-term result.

Why Deinstitutionalization matters in AP® Psychology

Deinstitutionalization lives in Unit 5: Mental and Physical Health, under Topic 5.5 Treatment of Psychological Disorders. It lines up directly with AP Psych 5.5.A (Describe research and trends in the treatment of psychological disorders). The essential knowledge names it outright. Increased use and effectiveness of psychotropic medication led hospitals and asylums to deinstitutionalize massive numbers of people in the late 20th century, and therapists now prefer decentralized treatment.

It also connects to AP Psych 5.5.F (biological interventions), because antipsychotic medication is the engine behind the trend. It connects to AP Psych 5.5.B (ethical principles) too, since moving people out of asylums was partly about respecting their rights and dignity. If you get a question about how mental health treatment has changed over time, deinstitutionalization is the big-picture trend you're expected to know.

Keep studying AP® Psychology Unit 5

How Deinstitutionalization connects across the course

Antipsychotic Medications (Unit 5)

This is the cause-and-effect link the exam cares about most. Antipsychotics act on dopamine to reduce symptoms like hallucinations and delusions. Once patients could be stabilized with a pill instead of a locked ward, keeping them hospitalized long-term was much harder to justify. No effective medication, no deinstitutionalization.

Tardive Dyskinesia and Medication Side Effects (Unit 5)

The medications that emptied the hospitals came with costs. Long-term antipsychotic use can cause tardive dyskinesia, a movement disorder tied to dopamine regulation. Outside a hospital, nobody may be watching for side effects or making sure people keep taking their meds. That gap helps explain why some patients struggled after release.

Community Mental Health Services (Unit 5)

Deinstitutionalization is the 'out' half of the story, and community mental health services are the 'in' half. The plan only works if outpatient clinics, therapists, and support programs actually exist to catch people. Underfunded community care is why critics point to homelessness and incarceration as the movement's biggest failures.

Ethical Principles and Stigma (Unit 5)

Old asylums often violated what the APA now calls respect for people's rights and dignity. Deinstitutionalization was partly an ethical correction that let people live as community members instead of being locked away. It also forced communities to confront stigma, because people with disorders were now neighbors rather than hidden patients.

Is Deinstitutionalization on the AP® Psychology exam?

No released FRQ has used this term verbatim, so expect it mainly in multiple-choice questions about trends in treatment (AP Psych 5.5.A). Common stem types include:

  • Cause questions. Which research finding supported the movement? The answer points to the effectiveness of psychotropic (especially antipsychotic) medication.
  • History questions. Why did the Community Mental Health Act of 1963 matter? It funded community-based centers meant to replace long-term hospitalization.
  • Consequence questions. Which outcome has been most criticized? Look for answers about inadequate community support, which left many former patients homeless or in jails and prisons.
  • Research-methods twists. A researcher is evaluating the shift to community care. Which data point would least help? You need to pick the data that doesn't measure patient outcomes (like relapse, readmission, housing, or quality of life).

On FRQs, deinstitutionalization works as a strong example when a prompt asks you to connect the biological approach to broader changes in how treatment is delivered.

Deinstitutionalization vs Community Mental Health Services

Deinstitutionalization is the process of moving patients out of psychiatric hospitals. Community mental health services are the destination, meaning the outpatient clinics, therapists, and support programs meant to treat people where they live. One is the exit and the other is the landing spot. The movement's main criticism comes from the mismatch between them, since lots of people exited but not enough landing spots were built.

Key things to remember about Deinstitutionalization

  • Deinstitutionalization was the late-20th-century movement of large numbers of patients out of psychiatric hospitals and asylums into community-based care.

  • The increased use and effectiveness of psychotropic medications, especially antipsychotics, is the main reason deinstitutionalization was possible.

  • The Community Mental Health Act of 1963 supported the movement by funding community mental health centers in the United States.

  • The most criticized consequence is that community support was often inadequate, so many former patients ended up homeless or incarcerated.

  • Today's preference for decentralized treatment that combines medication and therapy grew directly out of deinstitutionalization.

  • On the exam, deinstitutionalization falls under AP Psych 5.5.A as a major trend in the treatment of psychological disorders.

Frequently asked questions about Deinstitutionalization

What is deinstitutionalization in AP Psychology?

It's the late-20th-century shift of large numbers of people with psychological disorders out of psychiatric hospitals and into community-based care. The CED ties it to the growing use and effectiveness of psychotropic medication in Topic 5.5.

What caused deinstitutionalization?

The biggest cause was effective psychotropic medication, especially antipsychotic drugs that could control symptoms of disorders like schizophrenia outside a hospital. Policy also mattered. The Community Mental Health Act of 1963 funded community centers meant to replace long-term hospital stays.

Was deinstitutionalization a complete success?

No. It gave many patients more freedom and dignity, but community programs were often underfunded and couldn't meet the need. Mental health advocates criticize it most for leaving many former patients homeless or in jails and prisons.

How is deinstitutionalization different from community mental health services?

Deinstitutionalization is the process of moving people out of psychiatric hospitals. Community mental health services are the outpatient clinics and programs meant to treat them afterward. The first is the exit, and the second is where patients were supposed to go.

Is deinstitutionalization on the AP Psych exam?

Yes. The CED's essential knowledge for AP Psych 5.5.A names it directly as a treatment trend. Expect it mostly in multiple-choice questions about its causes, the 1963 Community Mental Health Act, and its criticized consequences.