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PsychologyCase studyPsychological assessment

Determining a Diagnosis: The Tina Case Study Essay

It asks for your thought process, not just your diagnosis — so the reasoning you would normally leave out is half of what is being marked.

Updated

Editorial process

Last reviewed · August 9, 2026

01

Why it asks how you thought, not what you concluded

The brief contains a sentence that tells you what the essay is really about, and it is easy to read past: *a counselor's own perception of psychopathology is extremely important in the diagnostic process*. That is why the assignment asks you to examine your *thought process* rather than simply to produce a diagnosis. The paper is partly reflective and partly clinical, and a submission that arrives at a well-supported DSM diagnosis without ever examining how the author got there has answered half of it. Plan to make your reasoning visible: what you noticed first, what you initially assumed, what made you revise, and what you are still uncertain about. That is unusual for a diagnostic paper and it is what this one is asking for. Write down your first impression before you open the DSM as well, because the point of a reflective diagnostic paper is to compare where you started with where you ended, and that comparison is impossible to reconstruct honestly afterwards.

Work the DSM pages the brief specifies before you write anything, because they are the assignment's own scaffolding. Three page ranges are given, which means three candidate diagnoses have been pre-selected for you to weigh. Read all three sets of criteria against the case rather than reading the one that seems most obvious. That structure also tells you what 'substantiate your diagnostic impression with appropriate criteria' means in practice: quote or reference the specific criteria met, note the ones not met, and address the duration and impairment requirements that most students skip. A diagnosis asserted without walking the criteria is exactly what this assignment is designed to catch. Note which criteria the case simply does not address too, since a vignette rarely supplies everything a diagnosis requires and identifying the gaps is part of substantiating an impression rather than a weakness in it.

The historic perspective element deserves genuine content rather than a paragraph of throat clearing. Psychopathology has been understood through demonological, moral, biological and psychosocial frames at different times, and each produced a different response to the same presentation — confinement, moral treatment, somatic intervention, psychotherapy. What makes this relevant to Tina is that those frames have not disappeared; they persist in how families, communities and sometimes clinicians interpret distress. Say what a historic misconception would produce if applied to *her* specifically: a presentation read as moral failing invites blame, one read as purely biological invites medication without context, and both are live possibilities rather than historical curiosities. Say which frame your own training defaults to as well, because the brief is asking about the counsellor's perception and naming your own starting assumptions is more useful than describing frames as though you stood outside all of them.

Cross-cultural perspective is the other half of that requirement and should be handled as analysis rather than as acknowledgement. The substantive points are that the expression of distress varies culturally — somatic presentation is common where psychological language for distress is less available — that what counts as disordered depends partly on local norms, and that DSM's own cultural formulation framework exists precisely because criteria developed in one setting do not transfer unexamined. Apply this to the case: ask what you would need to know about Tina's background before being confident, and say what you would ask her. Naming a question you cannot answer from the case is stronger than assuming the answer. Note that culture applies to the clinician too, since the framework is often applied as though only the client had a culture, and recognising that the diagnostic categories themselves come from somewhere is the sharper version of this point.

Then reach a decision, because the brief asks for your diagnostic impression and hedging will cost you. A defensible structure is to name the impression, substantiate it against criteria, state the differentials you considered and why you set them aside, and note what would change your mind. Include the provisional or rule-out language where the case genuinely does not supply enough information — that is precision rather than evasion, provided you say what information is missing. The brief allows you to include referrals and a general course of treatment, so use that latitude to show that the diagnosis leads somewhere, which is the point of making one. State your confidence level as well, because a diagnostic impression offered with an explicit degree of certainty is more useful to whoever reads the file next than one presented as settled when the evidence was thin.

Watch the word count, because 500 to 750 words is very tight for four required elements plus five scholarly references. That budget rules out a historical survey and a cultural survey as separate essays inside the paper; both have to be applied directly to Tina within a paragraph or two each. Write the diagnostic substantiation first, since it is the least compressible part, then fit the reflective and contextual material around it. Five scholarly references in addition to the textbook is a high density for this length, so choose sources you will actually cite in support of a specific claim rather than assembling a list. The submission goes through LopesWrite, so paraphrase rather than quote. Draft slightly long and cut rather than writing to the limit too, since compression usually improves a short diagnostic paper and it is easier to remove a weak sentence than to find one when the count falls short.

Required element

The version that under-performs

What the brief is asking for

Your thought process

Omitted; only a conclusion given

What you noticed, assumed, and revised

The specified DSM pages

One read, the others ignored

All three candidates weighed against the case

Diagnostic impression

Named without criteria

Criteria met and not met, with duration and impairment

Historic perspectives

A paragraph on the history of madness

What a historic frame would do to Tina's care

Cross-cultural perspectives

Acknowledged in passing

What you would need to ask her, and why

Historic misconceptions and treatment

Merged with the history section

Their effect on how she would be treated now

Referrals and course of treatment

Skipped

Where the diagnosis actually leads

Five scholarly references

A list assembled at the end

Sources cited in support of specific claims

Likely learning objectives

Inferred from the brief — check these against your own rubric.

  • 01
    Make diagnostic reasoning visible rather than presenting only a conclusion.
  • 02
    Weigh several candidate diagnoses against explicit criteria.
  • 03
    Apply historic and cross-cultural framings to a specific client.
  • 04
    Reach a decision while stating what would change it.
Assignment instructionsQuoted verbatim

Read the full question

Review every instruction before using the planning guidance that follows.

Details: Review the diagnostic criteria on pages 99-100; 160-161; 561-562 of the DSM-5. A counselor’s own perception of psychopathology is extremely important in the diagnostic process. Using the case study of “Tina”, write a 500-750 word essay in which you examine your thought process about her presenting issues. Include the following in your paper: Discuss the historic and cross-cultural perspectives of psychopathology that could potential impact the diagnosis and treatment of Tina. After reviewing the several diagnoses that could pertain to Tina from the latest version of the DSM, what is your diagnostic impression? Substantiate your diagnostic impression with appropriate criteria from the current version of the DSM. Discuss how historic misconceptions of psychopathology could potentially impact the treatment of this client. As part of this discussion, you may include a diagnosis, any referrals that you would make, and a general course of treatment. Include at least five scholarly references in addition to the textbook in your paper. Prepare this assignment according to the guidelines found in the APA Style Guide, located in the Student Success Center. This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion. You are required to submit this assignment to LopesWrite. Refer to the directions in the Student Success Center. PCN-605-RS-T2CaseStudyTina.docx PCN 605 Topic 3 DQ 1 Childhood disorders often gain popularity during a specific time, such as Autism and ADHD. Select a commonly diagnosed childhood disorder and discuss. Why is it currently in vogue? Be sure to include in your discussion thoughts about medication trends, media attention, etc. PCN 605 Topic 3 DQ 2 How can a therapist determine if a child’s presenting issue can be accounted for based on typical development (e.g., Piaget’s theory of cognitive development, Erik Erikson’s psychosocial stages) or determine that the issue is pathological in nature? Provide at least one specific example in your response. Assignment : Determining a Diagnosis and Diagnostic Criteria
02

What the essay must contain

  1. 01
    A 500-750 word essay examining your thought process.
  2. 02
    Historic and cross-cultural perspectives applied to Tina.
  3. 03
    A diagnostic impression.
  4. 04
    Substantiation against specific DSM criteria.
  5. 05
    How historic misconceptions could affect her treatment.
  6. 06
    Referrals and a general course of treatment.
  7. 07
    Five scholarly references beyond the textbook.
03

From first impression to a treatment direction

01

What you noticed first

Open the reflective thread the brief's own framing calls for.

02

Three candidates, weighed

Work the specified DSM criteria sets against the case.

03

The impression, substantiated

State the diagnosis and walk the criteria met and unmet.

04

Historic and cultural framing

Apply both to Tina's likely care rather than surveying them.

05

Where the diagnosis leads

Give referrals, a course of treatment, and what would change your view.

04

Read all three criteria sets before deciding

Recommended databases

  • DSM-5, at the specified pages
  • PubMed Central
  • Transcultural psychiatry literature
  • GCU library counselling databases

Search sequence

  1. 1.
    Read all three specified DSM page ranges before forming any impression, because the brief chose them and reading one first will anchor you to it.
  2. 2.
    Search the cultural formulation literature rather than general cultural competence, since DSM-5 has its own framework for exactly this and citing it is more precise.
  3. 3.
    Look for work on how diagnostic categories have shifted historically, so the historic section rests on scholarship rather than on general knowledge.
  4. 4.
    Choose the five references for the claims they will support, given that a 500-750 word paper cannot accommodate sources that are merely listed.
05

Cultural formulation and diagnostic history

These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.

Nothing here is cleared for citation until you have read it.

  1. 01

    Culture and psychiatric evaluation: operationalizing cultural formulation for DSM-5

    Psychiatry · 2014

    The most directly useful source here, because it gives you DSM-5's own cultural formulation structure — which turns the cross-cultural requirement from a general observation into a named framework you can apply to Tina.

  2. 02

    Culture and psychiatric diagnosis

    Advances in Psychosomatic Medicine · 2013

    Covers how cultural context affects both the expression of distress and its classification, which supports the argument that criteria developed in one setting need examination before being applied in another.

  3. 03

    Culture, cultural factors and psychiatric diagnosis: review and projections

    World Psychiatry · 2009

    A review that traces how the diagnostic system has accommodated cultural factors over time, which lets you connect the historic and cross-cultural halves of the requirement rather than treating them separately.

  4. 04

    The Evolving Culture Concept in Psychiatric Cultural Formulation: Implications for Anthropological Theory and Psychiatric Practice

    Culture, Medicine and Psychiatry · 2023

    Recent and critical, which is useful for the reflective element: it examines the assumptions clinicians bring to cultural assessment, and the brief's own framing is about the counsellor's perception.

  5. 05

    Cultural neuroscience and psychopathology: prospects for cultural psychiatry

    Progress in Brain Research · 2009

    Bridges the biological and cultural framings, which is helpful when arguing that a purely biological reading of Tina's presentation is itself a historically situated choice rather than a neutral one.

06

Before the essay goes to LopesWrite

Common mistakes

  • Presenting a diagnosis with none of the reasoning that produced it.
  • Reading only one of the three specified DSM page ranges.
  • Asserting an impression without walking the criteria.
  • Ignoring the duration and impairment requirements.
  • Never naming the differentials considered and set aside.
  • Writing a general history of psychopathology unconnected to Tina.
  • Treating historic frames as extinct rather than persisting.
  • Acknowledging culture without saying what you would ask.
  • Assuming cultural details the case does not supply.
  • Hedging instead of reaching a diagnostic impression.
  • Counting the textbook toward the five required references.

Submission checklist

  • The essay examines your reasoning, not just its conclusion.
  • All three specified criteria sets have been read and weighed.
  • The diagnostic impression is stated clearly.
  • Criteria met and not met are both addressed.
  • Duration and impairment requirements are covered.
  • Differentials considered are named with reasons for rejection.
  • Historic perspectives are applied to Tina specifically.
  • Cross-cultural perspective produces a question you would ask.
  • Referrals and a course of treatment are included.
  • Five scholarly references support specific claims.
  • The essay falls within 500-750 words.

Use this guide to plan and review your own work. Follow your institution's rules and read our academic-integrity policy.

Written by

Aaron Bishop

MA, Education

assignment interpretation and research-methods coaching across disciplines

Aaron leads the EssayCrackers editorial desk. He works on how assignment briefs are read — what a rubric is actually asking for, and where students most often answer a different question than the one set.

Reviewed by

Dr. Nathan Cole

PhD, Rhetoric & Composition

Argumentation and thesis development

Nathan teaches first-year composition and directs a university writing center. He reviews EssayCrackers guides for argumentative soundness and citation accuracy.

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