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Part A covered two tools that often get treated as interchangeable (they’re not): DISCStyles (observable interaction behaviour) and the Jungian Personal Style Inventory (preferred ways of perceiving and deciding).
Now let’s add the third tool, then make the differences so clear your reader can choose in two minutes without the “astrology” effect.
Tool 3: Personal Style Indicator (CRG PSI) - the practical pattern lens
The model it’s built on
The Personal Style Indicator (CRG PSI) is built around four general style domains:
- Behavioural
- Cognitive
- Interpersonal
- Affective
From those, it identifies which of 21 style patterns apply to the individual.
The language on the MLR page is important: this tool is designed to help people discover their natural preferences towards time, people, tasks, and situations, and it includes guidance on “style shifting” (i.e., adapting without pretending to be someone else).
It also mentions the option to compare individuals and jobs via a related job tool (JSI). That’s a clue to the space it owns: it’s not just “how I come across”, it’s “how I naturally operate — and what that means for effectiveness and fit”.
What results you get
You get a pattern-based profile that tends to land as:
- “Here’s what I naturally prioritise.”
- “Here’s what drains me or trips me under pressure.”
- “Here’s what I need from others — and what they need from me.”
- “Here are the situations where I’m at my best (and where I need a strategy).”
Because it can surface multiple patterns, it often gives a broader, more coaching-friendly picture than a single-type label.
Strengths
- Whole-person practical: it connects preferences to everyday demands (time, tasks, situations), not just interpersonal behaviour.
- Strong for coaching: it naturally leads to development themes, experiments, and habit shifts.
- Role-fit friendly: the individuals-vs-jobs comparison angle is useful in development planning, career moves, and succession conversations.
Watch-outs
- More nuance means more to debrief: without a clean summary, participants can feel overloaded.
- Less instant “team shorthand” than DISC unless you simplify the outputs into a few memorable headlines.
Best for (when to choose CRG PSI)
Choose this when you want insight for coaching, career, and effectiveness, such as:
- coaching programmes (internal or external)
- career transitions and succession conversations
- personal effectiveness and resilience programmes
- development planning that needs more than “communication tips”
Side-by-side: what space does each tool own?
| Tool | Built on | Primary lens | Best for | Typical outcome |
| DISCStyles | DISC behavioural model (directness × openness) | Observable interaction behaviour | Communication, conflict, collaboration | A shared language + practical flex strategies |
| Jungian Personal Style Inventory | Jungian type preferences | How people prefer to perceive/decide/orient | Team cohesion, leadership self-awareness | Better interpretation of difference + better decisions |
| CRG Personal Style Indicator | CRG PSI (4 domains, 21 patterns) | Practical preference patterns across demands | Coaching, career, role effectiveness | Personal insight + development experiments + fit conversations |
MLR “personal shopper” decision guide (pick the tool that matches the job)
If you want a quick, defensible way to choose, start with the job-to-be-done:
1. Is the pain mostly interpersonal friction and miscommunication?
- Choose DISCStyles.
- Why: it gives a simple behavioural language and clear “flex” actions.
2. Is the pain mostly misunderstanding of difference (how people think/decide), or a team that needs cohesion?
- Choose Jungian Personal Style Inventory.
- Why: it helps people stop misreading each other’s intent and improves decision-making diversity.
3.Is the pain mostly personal effectiveness, coaching themes, career direction, or role alignment?
- Choose Personal Style Indicator (CRG PSI).
- Why: it gives a broader pattern-based picture that supports coaching and fit.
If you’re still torn, ask this one question:
- Do we need a tool that changes conversations between people (DISC), a tool that changes how people interpret each other (Jung), or a tool that changes how someone manages themselves across demands (CRG PSI)?
The biggest risk with any style tool: insight without transfer
Style tools are brilliant at creating insight. But insight isn’t change.
If you want this to land as “trusted advisor” rather than “fun workshop”, build a simple transfer plan into the design. Here’s a reliable structure that works with all three tools:
1) Translate the results into 2–3 commitments
Make them behavioural and specific:
- “In meetings I will…”
- “When I disagree, I will…”
- “When I’m under pressure, I will…”
2) Add proof points (so it’s not vibes)
- “You’ll notice because…”
- “We’ll know it’s working when…”
This turns style language into observable outcomes.
3) Build practice into real work
Pick one or two real moments:
- a weekly team meeting
- a 1:1
- a customer escalation
- a project handover
Then practise the new behaviour there, not only in role play.
4) Do a 30-day and 90-day check-in
Keep it light:
- What did you try?
- What worked?
- What snapped back under pressure?
- What’s the next experiment?
That’s how you stop a style session becoming a nice day out and start turning it into better working.
Final word: none is “best” - one will be best for your purpose
DISCStyles, Jungian PSI, and CRG PSI are not competitors in a cage match. They’re three different lenses.
Choose the lens that matches the job-to-be-done, then design for transfer. Do that, and you’ll get what you actually want: better working relationships, better leadership, and better performance.
If you want, tell me the scenario you’re designing for (audience, seniority, and the real business pain), and I’ll suggest which tool to lead with and what to pair it with so it sticks.