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Homelessness and mental health

Homelessness and mental health is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Homelessness and mental health rather than just read about it. In short: A study in Western societies found mental illness, alcoholism, and drug dependency to be more prevalent among homeless people than among the general population. A 2009 US study estimated that 20–25% of homeless people, compared with 6% of the non-homeless, have severe mental illness.

Key takeaways

  • Homelessness and mental health belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Homelessness and mental health to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Homelessness and mental health from memory before moving on to harder problems.

Reference excerpt

A study in Western societies found mental illness, alcoholism, and drug dependency to be more prevalent among homeless people than among the general population. A 2009 US study estimated that 20–25% of homeless people, compared with 6% of the non-homeless, have severe mental illness. Other estimates vary. One 2003 study out of California suggests that 20-40% of the homeless have a severe mental illness. A 2024 systematic review and meta-analysis by JAMA (the Journal of the American Medical Association), consisting principally of Canadian, German, and American studies, found that 67% of the unhoused had a mental health disorder, with a 77% lifetime mental health disorder prevalence among those who are or have been homeless. In January 2015, the most extensive survey ever undertaken found 564,708 people were homeless on a given night in the United States. Depending on the age group in question and how homelessness is defined, the consensus estimate as of 2014 was that, at any given time, 45% of the American homeless—250,000 individuals—were mentally ill and that at least 25% of the homeless—140,000 individuals—were seriously mentally ill, with even higher numbers if these were annual counts rather than point-in-time counts. Being chronically homeless also means that people with mental illnesses are more likely to experience catastrophic health crises requiring medical intervention or resulting in institutionalization in the criminal justice system. Though most homeless people do not have a mental illness, those facing homelessness are struggling with psychological and emotional distress. The Substance Abuse and Mental Health Services Administration found that, in 2010, 26.2 percent of sheltered homeless people had a severe mental illness. Research across seven western countries, including the United Kingdom, found that people in emergency accommodation, predominately ment in shelters and hostels, experience diagnosable mental health conditions at a far higher rate than the general population of the same age. Estimate rates include psychotic illness (12.7%), major depression (11.4%) and personality disorder (23.1%). A Scottish study found that people experiencing homelessness are admitted to mental health services at almost five times the rate of people living in the most deprived areas and twenty times the rate of people in least deprived areas. Studies have found that there is a correlation between homelessness and incarceration. Those with mental illness or substance abuse problems were found to be incarcerated more often than the general population. Fischer and Breakey have identified the chronically mentally ill as one of the four main subtypes of homeless persons, the others being street people, chronic alcoholics, and the situationally distressed. The first documented case of a psychiatrist addressing the issue of homelessness and mental health was that of Karl Wilmanns in 1996.

Historical context

United States In the United States, there are broad patterns of reform within the history of psychiatric care for persons with mental illness. These patterns are currently categorized into three major cycles of reform. The first recognized cycle was the emergence of moral treatment and asylums, the second consists of the mental hygiene movement and the psychopathic (state) hospital, and most recent cycle includes deinstitutionalization and community mental health. In a 1986 article addressing the historical developments and reforms of treatment for the mentally ill, Joseph Morrissey and Howard Goldman acknowledged the current regression of public social welfare for mentally ill populations. They specifically state that the "historical forces that led to the transinstitutionalization of the mentally ill from almshouses to the state mental hospitals in the nineteenth and twentieth centuries have now been reversed in the aftermath of recent deinstitutionalization policies".

Asylums

Within the context of transforming schemas of moral treatment during the early nineteenth century, the humanitarian focus of public intervention was linked with the establishment of asylums or snake pits for treatment of the mentally ill. The ideology that emerged in Europe disseminated to America, in the form of a social reformation based on the belief that new cases of insanity could be treated by isolating the ill into "small, pastoral asylums" for humane treatment. These asylums were meant to combine medical attention, occupational therapy, socialization activities and religious support, all in a warm environment. In America, Friends Asylum (1817) and the Hartford Retreat (1824) were among the first asylums within the private sector, yet public asylums were soon encouraged, with Dorothea Dix as one of its key lobbyists. The effectiveness of asylums was dependent on a collection of structural and external conditions, conditions that proponents began to recognize were unfeasible to maintain around the mid-nineteenth century. For example, with the proliferation of immigrants throughout industrialization, the original purpose of asylums as small facilities transformed into their actualized use as "large, custodial institutions" throughout the late 1840s. Overcrowding severely inhibited the therapeutic capacity, inciting a political reassessment period about alternatives to asylums around the 1870s. The legislative purpose of state asylums soon met the role society had funneled them toward; they primarily became institutions for community protection, with treatment secondary.

Deinstitutionalization Toward the end of World War II, the influx of soldiers diagnosed with "war neurosis" incited a new public interest in community care. In addition to this, the view that asylums and state hospitals exacerbated symptoms of mental illness by being "inherently dehumanizing and antitherapeutic" spread through the public consciousness. When psychiatric drugs like neuroleptics stabilized behavior and milieu therapy proved effective, state hospitals began discharging patients, with hope that federal programs and community support would counterbalance the effects of institutionalization. Furthermore, economic responsibility for disabled people began to shift, as religious and non-profit organization assumed the role of supplying basic needs. The modern results of deinstitutionalization show the dissonance between policy expectations and the actualized reality.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Homelessness and mental health

Start with the simplest possible case. Write down what Homelessness and mental health claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Homelessness and mental health before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Homelessness and mental health ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Homelessness and mental health

In research
Homelessness and mental health appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Homelessness and mental health in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Homelessness and mental health is common in secondary-school and first-year university syllabi. It links to neighbouring topics Deinstitutionalisation, Homelessness, Mental health, so understanding it makes those chapters shorter.
In everyday life
Look for Homelessness and mental health outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Homelessness and mental health in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Homelessness and mental health means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Homelessness and mental health out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Homelessness and mental health in simple terms?

A study in Western societies found mental illness, alcoholism, and drug dependency to be more prevalent among homeless people than among the general population. A 2009 US study estimated that 20–25% of homeless people, compared with 6% of the non-homeless, have severe mental illness.

Why does Homelessness and mental health matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Homelessness and mental health?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Homelessness and mental health.

Tags

  • Deinstitutionalisation
  • Homelessness
  • Mental health

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