SCWK90054 Chap.2 Assessment Lenses and Case Formulation
Assessment Lenses and Case Formulation
Case formulation connects assessment facts to an explanation of how difficulties developed, continue and may change. This chapter compares the biopsychosocial model, ecological systems theory, trauma-informed practice and the temporal structure of the 5Ps. It shows how each lens directs attention, what it can leave under-explained, and how to compare priorities without changing or selectively rewriting the underlying evidence.
What this chapter covers
- 01
Biopsychosocial interactions among health, coping, relationships and material conditions
- 02
Ecological links across immediate relationships, services, policy, culture and time
- 03
Trauma-informed principles for safety, transparency, collaboration and empowerment
- 04
The 5Ps as presenting, predisposing, precipitating, perpetuating and protective factors
- 05
Mechanism sentences that connect a factor to a current difficulty or resource
- 06
Collaborative formulations written as hypotheses that can be corrected and revised
Worked example · free
Compare two lenses without changing the facts
- 1Preserve the stable evidence and identify uncertainty before either framework is applied.
- 1Use the 5Ps to distinguish the presenting difficulties, recent trigger, maintaining processes and possible protection.
- 1Use the ecological lens to connect family, housing, campus systems and service access.
- 1Compare the urgency judgments and state a practical sequence that remains open to the student's view.
Key terms
- Case formulation
- A collaborative and revisable explanation linking assessment information to mechanisms, strengths and priorities.
- Biopsychosocial model
- A framework that examines interacting biological, psychological and social influences on wellbeing.
- Ecological systems theory
- A framework locating the person within interacting relationships, services, communities, institutions and historical change.
- Trauma-informed practice
- An approach organised around safety, trust, choice, collaboration, empowerment and cultural context.
- Perpetuating factor
- A condition or process that helps maintain a current difficulty after its initial trigger.
- Protective factor
- A strength or resource that may reduce burden or support functioning when it works in context.
Assessment Lenses and Case Formulation FAQ
Is case formulation the same as diagnosis?
Diagnosis classifies a pattern of symptoms using defined criteria. Formulation explains how and why a particular situation may have developed and persisted, connects difficulties with context and strengths, and informs priorities. A formulation can incorporate diagnostic information, but it should not reduce the person to a category or present a hypothesis as final truth.
How do I choose an assessment framework?
Start with the decision and the information that is currently under-explained. Choose a framework whose organising questions expose that gap. An ecological lens suits cross-system influences, while the 5Ps can clarify time and maintenance. Justify fit by explaining what the framework changes, not by saying it is holistic.
What should the final perspective comparison say?
State whether the two lenses agree on urgency, produce competing priorities or can be sequenced. Explain why the difference matters for action. If the priorities cannot yet be reconciled, identify the missing information needed to choose. Avoid ending with the empty statement that both perspectives are useful or equally important.
How do I stop the second perspective from repeating the first?
Give each lens a distinct organising question before writing. Use the same facts, then identify which mechanism, time frame or system becomes more important under each perspective. The comparison should show a changed interpretation or priority, not a second list of the same factors under different headings.
Assessment move
Build a four-column comparison sheet with each framework's organising question, information it foregrounds, likely blind spot and decision consequence. Apply the sheet to one stable fictional evidence set so the facts do not drift between lenses. For every factor you place in a framework, add a mechanism verb such as disrupts, delays, narrows, reinforces or buffers.
Next, write one urgency sentence per perspective and a final sentence that sequences, reconciles or preserves the tension between them. Test collaboration by rewriting definitive claims as hypotheses that invite the person's correction. During revision, delete the framework names temporarily. If the paragraphs still read as generic lists, restore the distinctive analytical work of each lens.
This exercise prepares the multi-perspective section because it links theory to what the practitioner notices and does. Add a timed comparison drill using only five case facts. Give each lens one paragraph with the same sequence: selected evidence, mechanism, priority and limitation. Underline any fact used by both perspectives and explain why its significance changes.
Next, swap the order of the lenses and test whether the proposed first action still follows logically. If the recommendation changes merely because one paragraph came first, the synthesis needs stronger criteria. Finish by recording one question for the person, one question for another information source and one condition that would require the formulation to be revised.
This makes comparison an accountable reasoning process instead of a display of theoretical vocabulary.
