| Course | PS 360 Psychopathology |
|---|---|
| Unit | Unit 5 |
| Paper type | Psychotic disorders paper |
| Length | About 1,020 words, 6 pages |
| Format | APA 7 student paper |
| School | Herzing University |
| Program | BS in Psychology |
| Updated | October 2026 |
Free sample paper for PS 360 Unit 5
What Research Shows, and How Firmly, About How Often Schizophrenia Occurs and How It Unfolds Over Time
Student Name
Psychology, Herzing University
PS 360: Psychopathology
Instructor Name
February 9, 2026
What Research Shows, and How Firmly, About How Often Schizophrenia Occurs and How It Unfolds Over Time
Introduction
Schizophrenia is among the most studied conditions in psychopathology and among the most misunderstood outside the field. Popular images tend to present it as either hopeless or dramatic, and neither picture matches the research. This paper reports what published research says about two questions: how often schizophrenia occurs and how it tends to develop over time. For each finding it states how strong the support is. The paper describes research at the level of populations. It says nothing about any individual and offers no criteria, screening or advice.
How the Group Is Described
The classification system used in this course groups schizophrenia with related conditions under the heading of schizophrenia spectrum and other psychotic disorders (American Psychiatric Association [APA], 2022). The group is defined by disturbances in how a person perceives and interprets reality, along with changes in motivation, expression and thinking, and the conditions within it differ mainly in duration and in the pattern of features. Classification does not describe a single cause, and the research reviewed below treats schizophrenia as a condition whose frequency and course vary considerably between people and settings.
How Often Schizophrenia Occurs
The most cited synthesis of how often schizophrenia occurs is a review by McGrath et al. (2008), which drew together systematic reviews of incidence, prevalence and mortality. It reported a median incidence of about 15 new cases per 100,000 people per year and a median lifetime morbid risk of about 7 per 1,000, meaning that a little under one person in a hundred would be expected to develop the condition over a lifetime. Those medians are often rounded in textbooks to "about one percent," a figure somewhat higher than the review's own estimates.
The review also separated incidence from prevalence, and the difference is worth explaining in a paper of this kind. Incidence counts new cases arising in a period; prevalence counts everyone who has the condition on a given date or across a stated interval. The review reported a median point prevalence of about 4.6 per 1,000 people (McGrath et al., 2008). Prevalence depends on both how often the condition begins and how long it lasts, so a population where people recover sooner, or where people with the condition die younger, will show lower prevalence even with the same incidence. That is why the mortality finding discussed below matters to how prevalence figures are read.
Equally important is what the review found about variation. Rates differed considerably between studies and settings. Incidence was higher among men than among women, and higher in urban settings and among migrants than among comparison groups (McGrath et al., 2008). These differences do not establish causes on their own, but they show that the condition is not spread evenly across populations, which challenged an older belief that schizophrenia occurs at the same rate everywhere.
Strength of this evidence
The evidence is strong as a description of variation and moderate as a set of precise figures. The estimates come from many studies across many countries, which is a strength, but those studies used different definitions, methods and periods, and the review reported medians and ranges rather than a single pooled rate for that reason. A careful paper reports the figures as medians with their spread.
Mortality
McGrath et al. (2008) also reported that people with schizophrenia die earlier than the general population, with a median standardized mortality ratio for all causes of about 2.6, meaning that deaths occurred at more than twice the expected rate. Much of that excess reflects physical illness, including cardiovascular disease, rather than the condition itself. The finding is consistent across studies and is among the most firmly established in this area. It is also the reason physical health care for people with serious mental illness has become a research and policy concern in its own right.
How Schizophrenia Unfolds Over Time
The second question concerns course. Jääskeläinen et al. (2013) brought together, in a meta-analytic review, the studies that reported recovery, defined as improvement in both symptoms and social or occupational functioning sustained over a period of time. Across the studies included, the median proportion of people who met that definition of recovery was about 13.5 percent. The review found no clear increase in recovery proportions in more recent decades, despite changes in treatment over that time.
The figure needs careful reading. Recovery in the review was defined strictly, requiring improvement in both symptoms and functioning, sustained over time. Many people whose outcomes fall short of that definition still improve considerably, live in the community and work. Course research shows wide variation: some people experience a single episode and others a longer course, and outcomes are shaped by access to care, social support and circumstance as well as by the condition.
Strength of this evidence
The evidence is moderate. The review's strict definition makes its findings comparable across studies, but the included studies differed in how they selected participants, how long they followed them and in which countries they took place. A strict definition also produces a conservative figure. The honest reading is that full recovery by this demanding standard is less common than many would hope, while improvement short of it is common, and that course varies widely between people.
What the Two Questions Show Together
Taken together, the research corrects both popular images. Schizophrenia is less common than "one in a hundred" suggests but common enough to touch many families. It is neither uniformly hopeless nor easily resolved; its course varies, and the variation is shaped in part by circumstances that care and support can change. The excess mortality finding points to physical health as a consistent and addressable problem.
Limits of This Review
This paper relied on two syntheses and the classification text. Both syntheses predate some recent research, and both summarize studies that varied in method. Neither can say anything about an individual's likely course, and nothing here should be taken as doing so. Questions about any person belong with licensed clinicians and the course's own materials.
References
American Psychiatric Association. (2022). Diagnostic and statistical manual of mental disorders (5th ed., text rev.). https://doi.org/10.1176/appi.books.9780890425787
Jääskeläinen, E., Juola, P., Hirvonen, N., McGrath, J. J., Saha, S., Isohanni, M., Veijola, J., & Miettunen, J. (2013). A systematic review and meta-analysis of recovery in schizophrenia. Schizophrenia Bulletin, 39(6), 1296-1306. https://doi.org/10.1093/schbul/sbs130
McGrath, J., Saha, S., Chant, D., & Welham, J. (2008). Schizophrenia: A concise overview of incidence, prevalence, and mortality. Epidemiologic Reviews, 30(1), 67-76. https://doi.org/10.1093/epirev/mxn001
The Herzing PS 360 Unit 5 instructions
The fifth PS 360 unit asks students to report what published research says about the psychotic disorders group, typically how often these conditions occur and what is known about their course, and to judge the strength of the evidence. Expect to place the group within the classification system briefly, then report findings from systematic reviews with their figures, definitions and limitations. Each claim should be followed by an assessment of how well supported it is. Popular images of these conditions should be addressed with evidence rather than opinion. The paper describes populations, not individuals, and it should contain no criteria, screening content or advice. Case material and personal accounts are not part of this assignment and should be left out.
How this PS 360 Unit 5 example is built
The sample opens by naming the two questions and the paper's limits. A short section places schizophrenia within its classification group. The frequency section reports McGrath and colleagues' incidence, lifetime morbid risk and point prevalence, explains the difference between incidence and prevalence and reports variation by sex, setting and migration, followed by a strength grade. A mortality section reports the standardized mortality ratio and its link to physical illness. The course section reports Jääskeläinen and colleagues' recovery figure with its strict definition, then grades it. The final sections show how the two questions together correct popular images and state the review's own limits. Every figure appears with its source.
PS 360 Unit 5 rubric: what full points look like
Herzing's rubric for the psychotic disorders paper usually rewards accurate reporting of research, correct definitions, explicit evaluation of evidence strength, a synthesis across findings and APA writing. Reporting earns credit when each number arrives with what it counts and who found it. Definitions score when terms such as incidence, prevalence and recovery are explained. Evaluation commonly decides the grade, favoring papers that explain why a finding is strong or moderate, including how the studies varied. Synthesis is credited when findings are connected, such as mortality affecting prevalence. Writing gains marks for respectful wording about people and for correcting stigmatizing images with evidence rather than with assertions about what people with these conditions are like.
Common PS 360 Unit 5 mistakes, and how to avoid them
Psychotic disorders papers lose points when they repeat the one percent figure without a source or explanation. Another frequent weakness is reporting a recovery percentage without its definition, which makes outcomes sound worse or better than the research shows. Students often confuse incidence with prevalence. Some describe dramatic or violent images drawn from media, which the reviews give no basis for and which adds stigma. Others give figures without saying how the studies varied. Including symptom lists or advice moves the paper outside the assignment. Concluding with predictions about any individual's course misreads population research, which describes groups and cannot forecast how a particular person will fare over time.
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PS 360 Unit 5 questions, answered
What language does this unit expect?
Person-first wording in most sections, meaning a person with a condition rather than a person described as the condition itself. Check your instructions, since some programs now accept identity-first language where communities prefer it. Either way, write about people rather than about categories, and avoid the informal vocabulary that circulates in ordinary speech. Markers in this course notice word choice closely.
Can I cite a documentary or a memoir?
As a source about representation or lived account, sometimes, if your instructions allow it and you label it as such. Not as evidence about prevalence, course or mechanism, which require peer-reviewed research. Keep the two kinds of source clearly separated in the paper, and say what each one can support. Mixing them is a quick way to weaken an otherwise careful argument.
I support someone living with one of these conditions. Does that help me write it?
It may sharpen your reading, and it still stays out of the paper. Their experience is theirs to tell, and a submission is a public document inside the school. Write from the research, cite what you read, and keep any private knowledge as background. Nothing in the assignment requires a real example, and including one adds risk without adding marks.
Where can I find a free PS 360 Unit 5 sample paper?
Every section of the PS 360 Unit 5 psychotic disorders paper is free on this page, with graded findings on frequency, mortality and course and margin notes. Assigned a different question about the group? Tell us which, and we prepare it for you free.
Is PS 360 Unit 5 a case analysis?
No. It is a literature paper. The sample reports systematic reviews at the level of populations, grades each finding and says nothing about any individual.