Case Formulation for Social Workers: Using the 5 Ps Framework to Guide Mental Health Practice
Case Formulation for Social Workers: Using the 5 Ps Framework to Guide Mental Health Practice
For many social workers developing their mental health practice, one of the biggest shifts is learning how to move from gathering information to understanding the person behind the information.
You may complete a comprehensive assessment.
You may gather information about a person's current concerns, history, relationships, strengths, risks and experiences.
But the next clinical question is:
How do all of these pieces fit together?
This is where case formulation becomes an essential skill.
For Australian social workers working towards Accredited Mental Health Social Worker (AMHSW) accreditation, developing formulation skills supports the ability to demonstrate clinical reasoning—the ability to understand a person's experiences, develop hypotheses about what may be contributing to their difficulties and use this understanding to guide intervention.
Based in Adelaide, South Australia, I provide social work supervision for practitioners locally and online across Australia, supporting social workers to strengthen their assessment, case formulation and clinical reasoning skills.
What Is Case Formulation?
Case formulation is most effective when it is developed collaboratively with the person wherever possible. While clinicians bring theoretical knowledge, professional experience and evidence-informed practice, the person's own understanding of their experiences is central to developing a meaningful formulation. Rather than something done to a client, formulation is a shared process that continues to evolve throughout therapy. As new information emerges or therapy progresses, clinicians continually test, refine and revise their hypotheses. Formulation is therefore an ongoing process rather than a one-off task completed during assessment. Case formulation is a clinician's working understanding of why a person may be experiencing difficulties and what may support change.
It brings together information gathered during assessment and organises it into a meaningful framework.
A formulation considers questions such as:
Why might this person be struggling at this point in their life?
What experiences may have contributed to their current difficulties?
What factors may be maintaining the problem?
What strengths and protective factors can support change?
What interventions may be most helpful?
A formulation is not simply a summary of information.
It is the process of making sense of information.
Importantly, a case formulation is not the same as a diagnosis.
A diagnosis describes a collection of symptoms or criteria.
A formulation aims to understand the person, their experiences and the factors influencing their current difficulties.
Two people may experience similar symptoms but have very different pathways that contributed to those experiences.
Therefore, their formulation and intervention may also look different.
Case Formulation Is a Working Hypothesis
A common misconception is that formulation means finding the "right" explanation for why someone is struggling.
In reality, formulation is a collaborative and evolving hypothesis.
As clinicians, we develop our understanding based on:
information gathered during assessment
theoretical frameworks
research evidence
clinical experience
the person's own understanding of their experiences
A strong formulation remains flexible. As new information emerges or therapy progresses, clinicians continually test, refine and revise their hypotheses. Formulation is therefore an ongoing process rather than a one-off task completed during assessment.
It allows us to stay curious rather than becoming fixed on one explanation.
The 5 Ps Framework for Case Formulation
While there are many ways to develop a formulation, the 5 Ps framework is commonly used because it provides a structured way of organising information while still allowing clinicians to integrate different theoretical perspectives.
Presenting factors
Predisposing factors
Precipitating factors
Perpetuating factors
Protective factors
The 5 Ps framework provides a structured way to organise information while maintaining a person-centred and holistic approach.
Presenting Factors: What Has Brought the Person to Therapy?
Presenting factors describe the current concerns that have led a person to seek support.
This may include:
Current symptoms
Emotional experiences
Behaviours or coping strategies
Impact on relationships, work or daily functioning
The person's goals for therapy
For example:
A person may present with increased anxiety, difficulty sleeping, reduced confidence and frequent reassurance seeking within relationships.
However, formulation encourages us to ask:
What might be contributing to this presentation?
The presenting concern is the starting point—not the whole story.
Predisposing Factors: What Has Shaped Vulnerability?
Predisposing factors are experiences or characteristics that may have increased a person's vulnerability to developing difficulties.
These may include:
Childhood experiences
Attachment experiences
Chronic illness/disability
Social disadvantage
Experiences of discrimination
Family relationships
Trauma and adversity
Previous experiences of loss
Biological factors
Personality characteristics
Learned coping patterns
Predisposing factors do not mean a person was destined to experience difficulties. Instead, they help us understand the context in which current struggles developed.
For example:
A person who experienced inconsistent emotional support during childhood may have developed beliefs such as:
"I need to keep others happy to maintain relationships."
"My needs are not important."
These beliefs may influence how they respond to relationships later in life.
Precipitating Factors: What Triggered the Current Difficulties?
Precipitating factors are events or changes that contributed to the current increase in distress.
These may include:
Relationship breakdown
Bereavement
Workplace stress
Health concerns
Major life transitions
Trauma exposure
Loss of support
For example:
A person who has previously managed anxiety may experience a significant increase in symptoms following a relationship separation.
The separation may not be the only factor contributing to their distress, but it may activate existing vulnerabilities.
Perpetuating Factors: What Keeps the Difficulties Going?
Perpetuating factors are the patterns, circumstances or responses that may maintain distress over time.
These may include:
Avoidance
Reassurance seeking
Negative beliefs about self
Safety behaviours
Social withdrawal
Ongoing stressors
Sleep difficulties
Relationship patterns
Systemic barriers (insecure housing, financial hardship, family violence, ongoing discrimination, limited access to services)
Identifying perpetuating factors is often where formulation is particularly useful, as it helps pinpoint potential intervention targets.
For example:
A person who fears rejection may repeatedly seek reassurance from their partner.
In the short term, reassurance may reduce anxiety.
However, over time, it may reinforce the belief:
"I cannot cope with uncertainty."
Understanding these patterns helps clinicians identify where change may occur.
Protective Factors: What Strengths Can Support Change?
Protective factors are strengths, resources and supports that promote resilience and recovery.
These may include:
Supportive relationships
Culture
Connection to country (where appropriate)
Spirituality
Community
Identitiy
Lived experience of overcoming adversity
Personal strengths
Values
Motivation for change
Previous experiences of coping successfully
Cultural strengths
Community connections
Access to resources
A formulation that only focuses on difficulties provides an incomplete understanding of a person.
Strengths are not an additional section added at the end.
They are central to understanding the person's capacity for change.
Example: How Different Frameworks May Conceptualise the Same Presentation
Imagine a client presents with significant anxiety within their relationship.
They frequently worry their partner is going to leave them and often seek reassurance that everything is okay.
Different clinicians may emphasise different aspects of the same presentation, depending on the therapeutic framework they are working from. Different therapeutic frameworks provide different ways of understanding what may be contributing to the difficulties and what may support change. These examples are intentionally simplified to illustrate how different evidence-based approaches can guide assessment and intervention.
Cognitive Behavioural Therapy (CBT)
A clinician working from a CBT framework may explore the relationship between thoughts, emotions, behaviours and underlying beliefs.
They may identify a possible core belief such as:
"I am unlovable."
They may notice that a triggering situation, such as their partner appearing distant, activates a thought such as:
"My partner is pulling away from me."
This thought may contribute to feelings of anxiety, which then leads to reassurance-seeking behaviours.
While reassurance may reduce distress in the short term, it may unintentionally maintain the anxiety cycle by reinforcing the idea that the person cannot tolerate uncertainty without seeking reassurance.
Assessment may explore:
What thoughts appear when anxiety is triggered?
What meaning does the person make of their partner's behaviour?
How strongly do they believe these thoughts?
What emotions and body sensations occur?
What behaviours follow these thoughts?
How does reassurance seeking affect anxiety in the short term and longer term?
The formulation may guide intervention focused on identifying maintaining patterns, developing alternative ways of responding and reducing behaviours that reinforce anxiety.
Acceptance and Commitment Therapy (ACT)
An ACT clinician may conceptualise the same presentation through the lens of psychological flexibility.
Rather than focusing primarily on whether thoughts are accurate, an ACT approach may explore how the person relates to their thoughts and emotions and whether their responses are helping them move towards the relationships and life they value.
Assessment may explore:
Psychological flexibility
Experiential avoidance
Willingness to experience uncertainty
Values within relationships
Whether coping strategies are moving the person towards or away from what matters to them
Questions may include:
When the thought "my partner might leave me" appears, what happens next?
What feelings or sensations are you trying to avoid or control?
How does reassurance seeking help in the short term?
What does it cost you in the longer term?
How would you like to respond in your relationship, even when anxiety is present?
The formulation may guide intervention focused on increasing psychological flexibility and supporting values-based action.
Eye Movement Desensitisation and Reprocessing (EMDR)
An EMDR clinician working from the Adaptive Information Processing (AIP) model may become curious about why the fear of abandonment carries such a strong emotional response in the present.
Assessment may explore whether earlier experiences, attachment-related experiences or adverse life events continue to influence current responses.
This may include exploring:
Significant past experiences
Attachment experiences
Adverse childhood experiences
Current triggers
Negative beliefs about self
Emotional and body responses
Existing strengths and resources
Depending on the person's readiness and stage of treatment, exploration may include questions such as:
When you feel your partner might leave, does it connect with earlier experiences?
Can you remember other times you have felt this way?
What memory feels connected to this belief about yourself?
What do these experiences lead you to believe about yourself?
What happens in your body when you think about these experiences?
This information may contribute to understanding relevant memories, current triggers, associated negative beliefs and available resources when considering whether EMDR therapy is appropriate.
These examples demonstrate that different therapeutic approaches are not necessarily competing explanations. Many mental health social workers integrate ideas from multiple evidence-based frameworks while ensuring intervention remains guided by a coherent formulation, the best available evidence and the person's goals and preferences.
Why Case Formulation Matters in Mental Health Social Work
Case formulation is where assessment becomes clinical reasoning.
It helps social workers move from:
"This person has anxiety."
towards:
"This person is experiencing anxiety that appears connected to specific experiences, beliefs, coping patterns and current stressors. Based on this understanding, these interventions may be helpful."
Formulation helps ensure interventions are purposeful, evidence-informed and responsive to the person rather than simply applying techniques based on symptoms alone.
Why this matters for AMHSW accreditation
While the AASW does not prescribe a specific case formulation model, Accredited Mental Health Social Workers are expected to demonstrate advanced assessment, clinical reasoning and evidence-informed intervention planning. Learning to develop and articulate a clear formulation is one way social workers strengthen these skills in practice.
Developing Case Formulation Skills Through Supervision
Case formulation is a skill that develops over time.
Learning frameworks is important, but applying them to real people, with their complexity, strengths, risks and unique experiences, is where deeper clinical learning occurs. One of my favourite parts of supervision is watching a supervisee reach the point where everything begins to connect. They've completed a thorough assessment and gathered pages of information, but they're wondering, "What does all of this actually mean?" Often, that's where our most valuable conversations about formulation begin.
Social work supervision provides an opportunity to:
explore your clinical thinking
reflect on assessment information
develop formulation skills
consider alternative hypotheses
connect theory with practice
strengthen confidence in intervention planning
For social workers working towards AMHSW accreditation, reflective supervision can provide a valuable space to strengthen the clinical reasoning skills required for mental health practice.
I provide social work supervision in Adelaide and online across Australia for social workers developing their mental health practice, including those working towards AMHSW accreditation.
Supervision offers a reflective space to explore assessment, formulation and intervention planning while continuing to build confidence as a mental health social worker.
