flowchart LR
F[1. Forming] --> S[2. Storming]
S --> N[3. Norming]
N --> P[4. Performing]
P --> A[5. Adjourning]
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18 Group Behaviour — Team Building, Leadership, Group Dynamics
18.1 What is a Group?
A group is two or more individuals, interacting and interdependent, who have come together to achieve particular objectives (Robbins-Judge). The two italicised words — interacting and interdependent — separate a group from a mere collection of people: shoppers in a queue are not a group; the audit team huddled over quarterly numbers is.
| Author | Definition | Foregrounds |
|---|---|---|
| Robbins & Judge | “Two or more individuals interacting and interdependent, who come together to achieve particular objectives.” | Interdependence + objective |
| Marvin Shaw | “Two or more persons who interact such that each person influences and is influenced by each other person.” | Mutual influence |
| Edgar Schein | “A number of people who interact with one another, are psychologically aware of one another, and perceive themselves to be a group.” | Felt membership |
| Homans | “A group is a number of persons who communicate with one another over a span of time.” | Communication over time |
18.2 Types of Groups
The most-tested classification is formal vs informal — and within each, several sub-types.
| Family | Sub-type | Defining feature | Example |
|---|---|---|---|
| Formal | Command group | Defined by the organisation chart; superior + subordinates | A sales manager and her direct reports |
| Task group | People working together on a specific job; may cross departments | New-product launch task force | |
| Committee | Standing or ad-hoc body to address a defined matter | Audit Committee | |
| Project / cross-functional team | Time-bound, multi-disciplinary | SAP implementation team | |
| Informal | Interest group | Members share an interest | Office cricket club |
| Friendship group | Members share liking | Lunch group | |
| Reference group | Used as a comparison standard | Senior management | |
| Membership group | The group one belongs to | One’s current team |
- Security — strength in numbers.
- Status — group membership confers identity.
- Self-esteem — feeling valued.
- Affiliation — social need.
- Power — collective leverage.
- Goal achievement — pooled effort.
18.3 Stages of Group Development — Tuckman (1965, 1977)
Bruce Tuckman (1965) — the most-cited model of group formation. Adjourning was added in 1977 with Mary Ann Jensen.
| Stage | What happens | Mood |
|---|---|---|
| 1. Forming | Group meets, learns about tasks, polite uncertainty | Hesitant |
| 2. Storming | Conflict over roles, leadership, priorities | Tense |
| 3. Norming | Agreement on roles, rules, norms | Cooperative |
| 4. Performing | Group works at peak effectiveness | Productive |
| 5. Adjourning | Group dissolves; reflection, separation | Mixed |
Connie Gersick’s Punctuated Equilibrium Model found that task groups follow a different pattern — not stages but two phases separated by a mid-point transition of intense change. Phase 1: inertia. Mid-point: realisation that time is short. Phase 2: focused action. Applicable to time-bounded project teams.
18.4 Group Properties — Robbins’s Five
| Property | Meaning |
|---|---|
| Roles | Expected behaviour patterns of a position |
| Norms | Acceptable standards of behaviour shared by members |
| Status | Socially defined position or rank |
| Size | Number of members — small (≤ 7) vs large |
| Cohesiveness | Degree to which members are attracted to one another and motivated to stay |
18.4.1 Roles
- Role perception — what we think we are supposed to do.
- Role expectations — what others believe we should do.
- Psychological contract — unwritten agreement between employee and employer about mutual obligations.
- Role conflict — when expectations from different roles clash.
- Role ambiguity — when expectations are unclear.
- Role overload — too many roles or too much in one role.
The classic Zimbardo Stanford Prison Experiment (1971) is the iconic demonstration of how powerfully roles shape behaviour.
18.4.2 Norms
Norms emerge over time and govern behaviour. Major categories: performance norms, appearance norms, social arrangement norms, allocation-of-resource norms (Feldman 1984).
Solomon Asch’s classic experiment showed that 75 % of subjects conformed to a clearly wrong group answer about line length at least once. Conformity is the adjustment of one’s behaviour to align with group norms.
18.4.3 Status
Status comes from three sources: power, contribution to group goals, and personal characteristics.
18.4.4 Group Size
- Small groups (5-7) — faster decisions, higher member satisfaction.
- Large groups (12+) — better for problem solving and diverse inputs but slower.
- Odd-numbered groups preferred to avoid ties.
- Social loafing (Ringelmann effect) — individual effort drops as group size grows. Demonstrated by Max Ringelmann (1913) with rope pulling; rediscovered by Bibb Latané, Williams & Harkins (1979).
18.4.5 Cohesiveness
High cohesion → conformity to norms. If norms favour productivity, performance rises; if norms favour goldbricking, performance falls. Cohesion is increased by smaller size, shared goals, time together, history of success, external threat.
18.5 Group Decision-Making
| Group strengths | Group weaknesses |
|---|---|
| More information, viewpoints | Time-consuming |
| Better acceptance | Conformity pressure (groupthink) |
| Higher legitimacy | Dominance by a few |
| Diversity of expertise | Diffused responsibility |
18.5.1 Groupthink — Irving Janis (1972)
Groupthink is the deterioration of judgement in highly cohesive groups under pressure for unanimity. The eight symptoms (Janis):
- Illusion of invulnerability
- Collective rationalisation
- Belief in inherent morality of the group
- Stereotyped views of out-groups
- Direct pressure on dissenters
- Self-censorship of doubts
- Illusion of unanimity
- Self-appointed mind-guards
Classic cases: Bay of Pigs invasion (1961), Challenger disaster (1986), Iraq WMD intelligence (2003). Remedies: assign a devil’s advocate, invite outside experts, hold second-chance meetings, break the group into independent sub-groups.
18.5.2 Group Shift / Polarisation
After group discussion, decisions tend to be more extreme in the direction members were initially leaning — the risky shift or, more accurately, group polarisation (Moscovici, Stoner).
18.5.3 Group Decision Techniques
| Technique | Author | Method |
|---|---|---|
| Interacting group | Default | Face-to-face open discussion |
| Brainstorming | Alex Osborn (1953) | Free idea generation; no criticism |
| Nominal Group Technique (NGT) | Delbecq & Van de Ven (1968) | Silent writing → round-robin → vote |
| Delphi technique | Helmer & Dalkey, RAND (1959) | Anonymous iterative expert questionnaires |
| Devil’s Advocate / Dialectical Inquiry | Mason & Mitroff (1981) | Assigned dissenter |
| Electronic meeting / GDSS | various | Anonymous typed input in networked room |
18.6 Teams vs Groups
A team is a group whose members collaborate to achieve shared, specific goals — with positive synergy, mutual accountability and complementary skills.
| Dimension | Work Group | Work Team |
|---|---|---|
| Goal | Share information | Collective performance |
| Synergy | Neutral (sometimes negative) | Positive |
| Accountability | Individual | Individual + mutual |
| Skills | Random / varied | Complementary |
18.6.1 Types of Teams
- Problem-solving team — meet to discuss process improvements (e.g., quality circle).
- Self-managed team — autonomous, makes its own decisions.
- Cross-functional team — members from different functions; e.g., new-product team.
- Virtual team — geographically dispersed, technology-mediated.
- Multi-team system (“team of teams”) — coordinated network of teams (Stanley McChrystal).
18.6.2 Belbin’s Nine Team Roles
Meredith Belbin (1981) identified nine team roles in three clusters:
| Cluster | Roles | Strength |
|---|---|---|
| Action-oriented | Shaper · Implementer · Completer Finisher | Drive and delivery |
| People-oriented | Coordinator · Teamworker · Resource Investigator | Collaboration |
| Thinking | Plant · Monitor Evaluator · Specialist | Ideas and judgement |
18.7 Leadership
Leadership is the ability to influence a group toward the achievement of a vision or set of goals (Robbins). Management and leadership are related but distinct: managers do things right; leaders do the right things (Bennis, Drucker).
| Manager | Leader |
|---|---|
| Administers | Innovates |
| Maintains | Develops |
| Focuses on systems and structure | Focuses on people |
| Relies on control | Inspires trust |
| Short-term view | Long-term view |
| Asks how and when | Asks what and why |
| Imitates | Originates |
| Does things right | Does the right things |
18.7.1 Leadership Theories — Five Families
| Family | Question | Anchor theories |
|---|---|---|
| Trait theories | Who is a leader? | Stogdill’s traits; Big Five for leadership |
| Behavioural theories | What do leaders do? | Ohio State (consideration + initiating structure); Michigan (employee- vs production-oriented); Blake-Mouton Grid |
| Contingency theories | How does situation matter? | Fiedler · Hersey-Blanchard Situational · House Path-Goal · Vroom-Yetton-Jago |
| Charismatic / Transformational | Vision and emotion? | Weber (charisma) · Bass-Burns (transformational vs transactional) · Conger-Kanungo |
| Contemporary / Modern | Newer questions? | Servant leadership (Greenleaf) · Authentic leadership · Ethical · Distributed/Shared · LMX (Graen) |
18.7.2 Trait Theories
Ralph Stogdill (1948, 1974) identified intelligence, supervisory ability, initiative, self-assurance, decisiveness, masculinity, maturity, etc. The Big Five trait of Extraversion is the strongest correlate of leadership emergence; Conscientiousness of leadership effectiveness.
18.7.3 Behavioural Theories
- Ohio State Studies (1940s-50s) — two independent dimensions: Initiating Structure (task) and Consideration (people).
- Michigan Studies (Likert) — Employee-oriented vs Production-oriented leaders.
- Blake-Mouton Managerial Grid (1964) — 9 × 9 grid on Concern for People × Concern for Production. (9,9) = Team Management is ideal; (1,1) = Impoverished; (1,9) = Country Club; (9,1) = Task Authority-Compliance; (5,5) = Middle-of-the-Road.
- Kurt Lewin’s three styles (1939) — Autocratic · Democratic · Laissez-faire.
18.7.4 Contingency Theories
Fiedler’s Contingency Model (1967) — leadership effectiveness depends on the match between leader style (task-oriented vs relationship-oriented, measured by LPC scale) and situational favourableness (leader-member relations · task structure · position power). Low-LPC (task-oriented) leaders perform best in highly favourable or highly unfavourable situations; high-LPC (relationship-oriented) in moderately favourable ones.
Hersey-Blanchard Situational Leadership (1969) — Style adapts to follower readiness (R1 → R4):
| Follower readiness | Leader style |
|---|---|
| R1 — Unable + unwilling | S1 — Telling (high task, low relationship) |
| R2 — Unable + willing | S2 — Selling (high task, high relationship) |
| R3 — Able + unwilling | S3 — Participating (low task, high relationship) |
| R4 — Able + willing | S4 — Delegating (low task, low relationship) |
House’s Path-Goal Theory (1971) — Leader’s job is to clear the path to subordinate goals using four styles (directive, supportive, participative, achievement-oriented) chosen contingent on follower characteristics and task demands.
Vroom-Yetton-Jago (1973, 1988) — Five decision styles (AI · AII · CI · CII · GII) chosen via a contingency decision tree.
18.7.5 Charismatic and Transformational
Charismatic leadership — Max Weber’s earlier concept; Conger-Kanungo (1987) behavioural model with vision, sensitivity to environment, personal risk, unconventional behaviour.
James MacGregor Burns (1978) distinguished:
- Transactional leadership — exchange of rewards for performance.
- Transformational leadership — inspires followers to transcend self-interest for the organisation.
Bernard Bass (1985) operationalised transformational leadership through the 4 I’s:
- Idealised Influence — leader as a role model.
- Inspirational Motivation — articulating a compelling vision.
- Intellectual Stimulation — encouraging creativity.
- Individualised Consideration — coaching, mentoring.
18.7.6 Contemporary Theories
- Servant Leadership — Robert Greenleaf (1970) — leader serves followers; ego subordinated to others’ growth.
- Authentic Leadership — Bill George (2003) — self-awareness, transparency, ethics.
- Ethical Leadership — Brown-Treviño — moral managers + moral persons.
- Leader-Member Exchange (LMX) / Vertical Dyad Linkage — George Graen (1975) — leaders develop in-group and out-group relationships with different subordinates.
- Distributed / Shared Leadership — leadership emerges across members rather than residing in one person.
- Implicit Leadership / Romance of Leadership — Meindl — followers’ prototypes shape leader perception.
18.8 Power and Influence
Power is the capacity to influence the behaviour of others. Wider than authority (formal power from position).
| Base | Source | Type |
|---|---|---|
| Legitimate | Position in hierarchy | Position |
| Reward | Ability to confer rewards | Position |
| Coercive | Ability to punish | Position |
| Expert | Specialised knowledge | Personal |
| Referent | Personal charisma; identification | Personal |
| (Informational — added 1965 by Raven) | Control of information | Personal |
Nine tactics: rational persuasion · inspirational appeals · consultation · ingratiation · personal appeals · exchange · coalitions · pressure · legitimacy.
18.9 Conflict and Negotiation
- Traditional view (1930s-40s) — conflict is harmful and must be avoided.
- Human relations view (1940s-70s) — conflict is natural and inevitable.
- Interactionist view (since 1970s) — some conflict (task / functional) is necessary; relationship conflict is harmful.
18.9.1 Thomas-Kilmann Conflict Modes
Kenneth Thomas and Ralph Kilmann (1974) — five conflict-handling styles on two axes (assertiveness vs cooperativeness):
| Style | Assertiveness | Cooperativeness | When to use |
|---|---|---|---|
| Competing / Forcing | High | Low | Quick decision, unpopular issue |
| Collaborating | High | High | Important issue, time available |
| Compromising | Medium | Medium | Equal-power parties, time pressure |
| Avoiding | Low | Low | Trivial issue, more info needed |
| Accommodating | Low | High | You are wrong; harmony matters |
18.9.2 Pondy’s Five Stages of Conflict
Louis Pondy (1967) — Latent → Perceived → Felt → Manifest → Aftermath.
18.9.3 Negotiation Strategies
- Distributive bargaining — fixed-pie, win-lose, positions.
- Integrative bargaining — expand the pie, win-win, interests.
BATNA (Best Alternative To Negotiated Agreement) — Fisher and Ury (Getting to Yes, 1981) — your fallback if negotiation fails.
18.10 Practice Questions
Tuckman's five-stage group development sequence is:
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The Punctuated Equilibrium model of group development is by:
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The decline of individual effort as group size grows — "social loafing" — was first observed by:
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Solomon Asch's classic 1951 experiment demonstrated:
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The Stanford Prison Experiment (1971) demonstrated:
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"Groupthink" was articulated by Irving Janis in:
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Belbin's team-role inventory identifies how many roles?
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Kurt Lewin's classification of leadership styles (1939) includes:
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In Blake-Mouton's Managerial Grid, (9,9) is called:
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Fiedler's Contingency Model uses which instrument to measure leader style?
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Hersey and Blanchard's Situational Leadership style for a follower who is "able but unwilling" (R3) is:
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House's Path-Goal Theory of leadership identifies how many leader behaviours/styles?
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Bass's *Four I's* of transformational leadership are:
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"Servant leadership" was articulated in 1970 by:
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Leader-Member Exchange (LMX) theory was proposed by:
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French and Raven's bases of power that derive from the *person* (not the position) are:
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In the Thomas-Kilmann conflict mode, the style that scores HIGH on both assertiveness and cooperativeness is:
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Pondy's stages of conflict — in order — are:
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In negotiation, **BATNA** stands for:
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Match the leadership theorist with the theory:
| (i) | Fiedler | (a) | Servant leadership |
| (ii) | House | (b) | Contingency model / LPC |
| (iii) | Bass | (c) | Path-Goal |
| (iv) | Greenleaf | (d) | Transformational (4 I's) |
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18.10.1 Advanced Format Questions
A: Tuckman's model has 5 stages.
R: Adjourning was added later to the original 4-stage model.
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A: Groupthink harms decision quality.
R: Janis identified Bay of Pigs as a classic example.
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Tuckman stages: (i) Forming. (ii) Storming. (iii) Norming. (iv) Performing. (v) Adjourning.
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Group dynamics phenomena: (i) Social loafing (Ringelmann). (ii) Risky shift. (iii) Conformity (Asch). (iv) Obedience (Milgram).
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18.11 Quick Recall
- Group — interacting + interdependent + objective (Robbins-Judge). Schein adds felt membership.
- Types: Formal (command, task, committee, project) · Informal (interest, friendship, reference, membership).
- Tuckman (1965+1977): Forming → Storming → Norming → Performing → Adjourning. Alternative — Gersick’s Punctuated Equilibrium (1988) with mid-point transition.
- 5 group properties: Roles · Norms · Status · Size · Cohesiveness.
- Iconic group experiments: Asch (1951 — conformity) · Zimbardo Stanford Prison (1971 — roles) · Milgram (obedience) · Ringelmann (1913 — social loafing) · Latané (1979 — social loafing rediscovered).
- Groupthink — Janis 1972; 8 symptoms; cases: Bay of Pigs, Challenger, Iraq WMD.
- Group decision techniques: Brainstorming (Osborn) · NGT (Delbecq-Van de Ven) · Delphi (Helmer-Dalkey) · Devil’s Advocate · GDSS.
- Team vs Group: positive synergy + mutual accountability + complementary skills.
- Belbin’s 9 team roles in 3 clusters (action / people / thinking).
- Leadership families: Trait · Behavioural (Ohio · Michigan · Blake-Mouton 9,9 Team Mgmt) · Contingency (Fiedler LPC, Hersey-Blanchard 4 styles by R1-R4, House Path-Goal 4 styles, Vroom-Yetton-Jago 5 styles) · Transformational (Bass’s 4 I’s) · Contemporary (Servant — Greenleaf 1970, Authentic — George 2003, LMX — Graen 1975).
- Lewin 3 styles: Autocratic · Democratic · Laissez-faire.
- Power bases (French-Raven): Legitimate · Reward · Coercive (position) + Expert · Referent (personal) + Informational (Raven 1965).
- Thomas-Kilmann conflict modes: Competing · Collaborating · Compromising · Avoiding · Accommodating. Pondy stages: Latent → Perceived → Felt → Manifest → Aftermath.
- Negotiation: Distributive vs Integrative; BATNA — Fisher-Ury 1981.