Group Exercise Tips for Assessment Centres
In a group exercise the task is a pretext. Assessors are watching how you behave while the group works, and they are marking you individually.
A group exercise puts four to eight candidates around a problem: allocate a budget, pick a supplier, respond to a crisis, agree a recommendation. Sometimes roles are assigned and you each hold information the others need. Sometimes it is leaderless and the group has to organise itself. Either way an assessor sits outside the discussion, usually watching two or three candidates, writing down what each of you says and does.
The single most useful thing to understand is that you are marked against a standard, not against the other candidates. A group that works well together can produce several strong scores. Blocking someone else’s idea to look decisive does not lower their mark and does produce negative evidence about you, which is why the behaviour assessors see most often is also the one that costs the most.
The second is that contribution is scored on usefulness rather than airtime. Two well-timed interventions that move the group forward beat ten minutes of talking. Virtual centres, where the discussion runs in a breakout room, make this sharper: interrupting is harder to do gracefully, so the candidates who do well are the ones who create space for others deliberately.
Group Exercise scenarios you can practise
Each one is timed, set in a named sector and scored against an expert key, with AI feedback on the written answers. Sign up to play the free sample in full.
Group Discussion: Scenarios
Practise the behaviours assessors look for in group exercises. Work through realistic group-discussion moments and choose the most effective way to contribute.
Corporate & Business · 20 minutes
Group Discussion: Crisis Response
Practise the behaviours assessors look for in group exercises. A crisis is unfolding and your group must agree a joint response under time pressure. Choose the most effective way to contribute.
Corporate & Business · 20 minutes
Group Discussion: Supplier Selection
Practise the behaviours assessors look for in group exercises. Acting as a selection panel, your group must choose between three shortlisted suppliers and agree a recommendation. Choose the most effective way to contribute.
Corporate & Business · 20 minutes
Group Exercise: Customer Data Platform
Practise the behaviours assessors look for in technical group exercises. Six candidates must agree how to deliver a customer data platform and a next-best-offer model for a retailer - platform, modelling approach and vendor - under a fixed budget and an immovable go-live date. Each candidate has a different brief, and the task changes halfway through. Choose the most effective way to contribute.
Engineering · 20 minutes
Group Exercise: Launch-Date Architecture
Practise the behaviours assessors look for in technical group exercises. Six graduate engineers must agree how to deliver a client-promised order-tracking feature by an immovable peak-season launch date: extend the legacy monolith, carve out a new service, or integrate a third-party API. Each candidate has a different brief, and the task changes halfway through. Choose the most effective way to contribute.
Engineering · 20 minutes
Group Exercise: Innovation Budget Committee
Practise the behaviours assessors look for in finance group exercises. Six graduate candidates form an innovation investment committee that must recommend how to deploy a £2m budget across five internal proposals - at most three can be funded. Each candidate has a different brief, and the task changes halfway through. Choose the most effective way to contribute.
Finance & Banking · 20 minutes
Group Exercise: Resilience Grant
Practise the behaviours assessors look for in public-sector group exercises. A cross-department working group must recommend how to allocate a reduced community-resilience grant across four programmes - youth outreach, road safety, library digital inclusion and flood preparedness. Each candidate has a different brief, and the political and evidential ground shifts halfway through. Choose the most effective way to contribute.
Public Sector · 20 minutes
What assessors write down
Useful contributions
Proposals that move the discussion on, information nobody else had, a summary at the right moment. Quality and timing, not volume.
Including other people
Inviting a specific quiet candidate in by name is one of the most reliably credited behaviours in the exercise, and almost nobody does it.
Listening and building
Referring to what someone else said and developing it is scored as collaboration. Repeating your own point louder is not.
Time management
Someone has to watch the clock and steer the group to a decision. Doing it visibly, at the halfway point and near the end, is a straightforward mark.
Handling disagreement
Challenging an idea while respecting the person is exactly the evidence the competency needs. Conceding everything and conceding nothing both score badly.
Getting to an outcome
Most exercises require a decision or a recommendation. A group that runs out of time with nothing agreed hurts everyone, so driving towards a conclusion is individually credited.
Four contributions to plan in advance
- 1
Propose a structure in the first two minutes
Suggest how long to spend on each stage and check the group agrees. It is an easy, early, markable contribution and it makes the rest of the discussion easier for everyone.
- 2
Bring in a specific person by name
"Priya, you had the figures on the second option, what do they say?" Assessors credit this immediately, and it costs you nothing to plan it beforehand.
- 3
Summarise at the halfway point
Recap what is agreed and what is still open. It demonstrates listening, it earns you goodwill, and it is the intervention groups most often need.
- 4
Call the time near the end
Five minutes out, say what still needs deciding and propose how to close it. Groups that drift to a stop with nothing agreed do so because nobody did this.
- 5
Use your information if roles are assigned
In a role-based exercise, hoarding your brief to protect your position is a scored failure. Share what the group needs, negotiate for what your role requires, and say what you are trading.
- 6
On video, hand over explicitly
In a breakout room, name who you are handing to and pause longer than feels natural. Latency makes natural turn-taking fail, and the candidate who manages that reads as the most competent person in the room.
Mistakes that cost marks
Dominating the discussion
The most common and most expensive mistake. Assessors log interruptions and talk-over, and volume does not read as leadership.
Saying nothing for the first ten minutes
An assessor cannot credit silence. If entering feels difficult, plan your first contribution before the discussion starts.
Grabbing the leader role
Announcing that you will chair, in a leaderless exercise, usually produces resistance and no marks. Structure the discussion by contributing, not by claiming a title.
Competing with other candidates
You are scored against a standard. Undermining someone produces negative evidence about you and leaves their score untouched.
Ignoring the brief’s constraints
Groups routinely agree a recommendation that breaks the budget or timeline they were given. Being the person who checks it is a mark.
Reaching consensus by giving up
Agreeing to a weak option to end the disagreement is not collaboration. Say what your reservation is, then agree if the group answers it.
Practise it against the clock
Timed e-tray, in-tray, written, presentation, group and role-play scenarios, scored against an expert key with AI feedback on every written answer.
Frequently asked questions
Should I try to lead the group exercise?
Not as a title. Behaviours associated with leadership, proposing structure, summarising, watching the clock and including people, are what get credited. Declaring yourself chair tends to produce friction that costs you more than the role gains.
How much should I speak?
Enough to be assessed, and no more than a fair share. Roughly proportionate to the group size is a safe target, weighted towards interventions that change what the group does next.
What if another candidate dominates?
Handle it visibly and calmly: "that is useful, and I would like to hear what Tom thinks before we decide". Managing a dominant person well is strong evidence, and the assessor is watching how you do it.
Are we marked as a group?
No. Scores are individual, based on the evidence each assessor records about each candidate. Whether the group reaches a good outcome matters mainly because it gives everyone something to be credited for.
How do virtual group exercises differ?
The exercise and the marking are the same, usually run in a breakout room with an assessor observing. Turn-taking is the real difference: explicit handovers, longer pauses and using names all matter more on video than in a room.
How can I practise a group exercise on my own?
You cannot run the discussion alone, so CogniPrep practises what assessors mark: the decision you take at each turn of the discussion, scored against an expert key on behaviours such as including quieter members and managing time, plus the written output the group produces.
The rest of the assessment day
Assessment days rarely run one exercise in isolation. Most pair the exercises with an interview and an aptitude test, and many run a situational judgement test as part of the earlier sift. Our employer guides set out what specific companies run at each stage.
Practise this next
Practise group exercise decisions
Turn-by-turn group scenarios scored on the behaviours assessors record.
Role-play exercise tips
The other interactive exercise, and the one that tests composure hardest.
How to pass an assessment centre
The competency matrix behind the day, and what to prepare beforehand.