Business and Technology · Individual and group behaviour in business organisations

Group Dynamics, Conflict and Groupthink for ACCA BT

Updated 11 October 2026 · Fact-checked

Group dynamics are the forces that shape how people behave and interact in a group. They include norms, cohesion, roles and conflict. Groupthink is when a cohesive group suppresses dissent and makes poor decisions. To answer BT questions, identify the group type, name the behaviour shown, then state its effect on performance.

Understand Group Dynamics, Conflict and Groupthink

A group is two or more people who interact and see themselves as part of a unit. Groups can be formal, created by the organisation to do work (a finance team, a project team). They can also be informal, formed by people through friendship or shared interests (a lunch group, a car-sharing circle). Informal groups are not on the organisation chart, but they can strongly influence behaviour.

Group norms are the unwritten rules about how members should behave, such as how hard to work or how to dress. Members who break norms may be pressured or ignored. Norms can help the organisation (high quality standards) or hurt it (limiting output to avoid looking bad).

Cohesion is how strongly members are attracted to the group and want to stay in it. High cohesion can raise morale and cooperation. But it only raises performance when the group's norms support organisational goals. A cohesive group with low-effort norms can perform badly.

Conflict is disagreement where parties see their interests as opposed. It can be functional (it produces new ideas and better decisions) or dysfunctional (it wastes time, harms relationships and lowers morale). Conflict can occur between individuals, between groups, or between a group and the organisation. Causes include limited resources, unclear roles, different goals and poor communication.

Groupthink (Irving Janis) happens when the wish for agreement overrides realistic appraisal of options. Symptoms include illusion of invulnerability, pressure on dissenters, self-censorship, belief in the group's morality and an illusion of unanimity. Risks are poor decisions, ignored alternatives and weak risk assessment. It is more likely in very cohesive groups with a strong leader and little outside input.

Key formulas to remember

Groupthink symptoms: Overconfidence + pressure to conform + self-censorship + illusion of unanimity; Use these as a checklist when a scenario shows a group agreeing too quickly.
Cohesion and performance: High cohesion + supportive norms = higher performance; high cohesion + opposing norms = lower performance; Cohesion alone does not guarantee good results. It depends on the norms.
Formal vs informal group: Formal = created by the organisation for a task; Informal = formed by members for social needs; Formal groups have set goals and structure. Informal groups meet social needs and have their own norms.
Conflict effect: Functional = improves decisions or innovation; Dysfunctional = harms performance or relationships; Always judge conflict by its effect, not just its existence.
Ways to reduce groupthink: Devil's advocate + outside experts + open leadership + subgroups + anonymous input; Leaders should avoid stating their preference first.

How to solve Group Dynamics, Conflict and Groupthink questions

Use this method for any scenario or knowledge question on group behaviour, conflict or groupthink.

1Read the scenario and underline the behaviour described, such as agreeing quickly, ignoring outsiders or restricting output.
2Identify the group type: formal or informal, and whether it is a group or a team.
3Match the behaviour to the right term: norm, cohesion, conflict or a groupthink symptom.
4Decide whether the effect on organisational goals is positive or negative.
5For conflict, decide whether it is functional or dysfunctional.
6Pick the answer that fits the scenario exactly. Check that no wording in the option contradicts the facts.
7For multiple response, select the exact number asked and confirm each choice separately.

Quickest way: Keyword matching

When to use it: Use this in Section A when you have about one minute per question.

Spot the trigger words: 'unwritten rules' means norms; 'strong sense of belonging' means cohesion; 'no one challenged the leader' means groupthink.
Check who created the group: the organisation means formal; the members themselves means informal.
Ask whether the outcome helped or harmed the organisation to decide functional or dysfunctional.
Eliminate options that claim something is always good or always bad.
Choose the best remaining option and move on.

Common mistakes in Group Dynamics, Conflict and Groupthink

Assuming high cohesion always improves performance.
Cohesion sounds positive, so students link it to success.
Fix: Check the group's norms. Cohesion helps only if norms support organisational goals.
Saying all conflict is harmful.
Everyday use of the word suggests something negative.
Fix: State that conflict can be functional or dysfunctional and judge by its effect.
Calling groupthink simply 'agreement'.
Students overlook the cause: pressure to conform that overrides critical thinking.
Fix: Look for suppressed dissent, overconfidence and ignored alternatives, not just agreement.
Treating informal groups as always a problem.
They sit outside formal authority, so they seem a threat.
Fix: Informal groups can improve communication and morale, though they can also spread rumours or resist change.
Confusing formal groups with informal groups by size or location.
Students focus on appearance, not origin.
Fix: Ask who created the group and why. Organisation-created for tasks is formal; member-created for social reasons is informal.
Choosing an answer that describes a solution when the question asks for a cause.
Rushing and skimming the question stem.
Fix: Re-read the final sentence of the question before selecting.

Worked examples

Example 1

A finance team of long-serving staff always agrees with its manager's proposals. A junior who raised concerns about a new system was told to 'stop being negative'. The system was adopted and failed. Which behaviour does this best illustrate? (A) Functional conflict (B) Groupthink (C) Informal grouping (D) Role ambiguity

Show the solution

Behaviour: the team always agrees and a dissenter is pressured to stay quiet.
Match: pressure on dissenters and self-censorship are groupthink symptoms.
Outcome: a poor decision was made because concerns were ignored.
Check the others: no useful disagreement occurred, so not functional conflict; the group is the formal finance team; there is no sign of unclear roles.

Answer: (B) Groupthink

Example 2

Explain two ways a manager can reduce the risk of groupthink in a project team.

Show the solution

Recall the cause: pressure to agree and lack of challenge.
Way 1: appoint a devil's advocate or encourage members to challenge ideas openly. This makes dissent acceptable.
Way 2: bring in outside experts or let the leader speak last. This adds fresh views and avoids the leader's opinion steering the group.
Link to benefit: more options are considered and risks are assessed realistically.

Answer: Appoint a devil's advocate to challenge proposals, and invite outside experts or have the leader speak last. Both widen the options considered and reduce pressure to conform.

Exam tips

Look for scenario clues: quick unanimous decisions, a dominant leader or sidelined critics point to groupthink.
Remember that conflict has two sides. Questions often ask you to identify when it is functional.
For formal versus informal, focus on how the group was formed, not on what it does.
In multiple response questions, select exactly the number stated and verify each option on its own.
Watch for absolute words like 'always' or 'never'. They are usually wrong in behavioural topics.

Practice questions from Individual and group behaviour in business organisations

Group Dynamics, Conflict and Groupthink: frequently asked questions

What is groupthink in simple terms?

Groupthink is when a group values agreement so much that it stops thinking critically. Members hide doubts and the group ignores alternatives. This often leads to poor decisions.

What is the difference between formal and informal groups?

A formal group is set up by the organisation to achieve a task, with defined roles. An informal group forms naturally from friendship or shared interests. Informal groups have their own norms and can affect performance either way.

How do you manage conflict in teams for ACCA BT?

First identify the cause, such as unclear roles, scarce resources or clashing goals. Then choose an approach, such as clarifying responsibilities, encouraging open discussion or involving a neutral person. Aim to keep functional conflict and reduce dysfunctional conflict.

Is high group cohesion always good?

No. Cohesion raises cooperation and morale, but it only improves performance if group norms support organisational goals. Very cohesive groups can also be more prone to groupthink.