Human Synergistics Diagnostic
Group Styles Inventory
(GSI)
See how your group really works together. The GSI measures how members interact when solving problems and making decisions, revealing the styles that help or hinder your team's effectiveness.
Measure how your team thinks together
The Group Styles Inventory from Human Synergistics measures how the members of a group interact with one another when solving problems and making decisions. It captures the group's interaction styles in the moment — so a team can see, with real evidence, how its own behaviour affects the results it achieves.
The 12 Styles
Three styles of interaction
Following a group problem-solving task, members assess the way the group worked together. The results map onto the same 12 styles as the Human Synergistics Circumplex, grouped into three behavioural clusters.
Constructive styles
The interaction styles that promote effective, synergistic teamwork — where the group draws on the thinking of every member.
Passive / Defensive styles
The styles that lead members to subordinate their own thinking, holding back ideas rather than putting them forward.
Aggressive / Defensive styles
The styles that turn problem-solving into a contest, where winning the argument matters more than reaching the best decision.
How the assessment works
A simple, in-the-moment process that turns how your group behaves into insight it can act on.
Solve together
The group completes a problem-solving task, working through it the way it naturally would.
Assess the interaction
Immediately afterwards, members assess the way the group worked together while the experience is still fresh.
Map the styles
Results map onto the 12 styles of the Human Synergistics Circumplex, grouped into three behavioural clusters.
See your synergy
The team sees how its own behaviour in the moment shaped the quality of its decision and its overall effectiveness.
What you get
Benefits for your team
The GSI gives teams an honest, shared view of how they work together — and a clear starting point for working together better.
See what helps or hinders
Reveal how your group's interaction styles help or hinder the results it is able to achieve together.
Measure synergy
Find out whether the group genuinely outperforms its individual members — or falls short of what they could achieve alone.
Build awareness
Build a shared understanding of the behaviours that drive effective, synergistic teamwork.
A shared language
Give teams a common language for talking about how they work together, not just what they decided.
Target improvement
Identify where to focus, then track improvements in group effectiveness over time.
Grounded in the Circumplex
Anchored to the same 12 styles as the Human Synergistics Circumplex used across their diagnostics.
The outcome
From insight to synergy
The real test of any group is whether it achieves more together than its members could alone. The GSI makes that visible — measuring synergy, surfacing the behaviours behind it, and giving teams the awareness to lift their effectiveness.
A clearer picture of how you work
Move past assumptions about how the group functions and see its actual interaction styles.
A measurable target for change
Set a clear direction for more constructive teamwork and track progress as you go.
Accredited practitioners
Our team is accredited to administer and debrief GSI. Talk to one of our qualified practitioners to get started.
See how your team really works together
Talk to us about running the Group Styles Inventory with your team, and turning how you work together into measurable improvement.
Get in touch
- Address
- Level 2, 151 Herdsman Parade, Wembley, WA 6014
- Telephone
- 08 9287 1041
- info@veraison.com.au