Group: Two or more people interacting and interdependent, influencing each other's needs and goals. (Aronson et al., 2022)
Informal rules guiding behavior.
Different norms for various groups.
Shared expectations on behaviors within a group.
Example: behaviors of prisoners vs. guards.
Qualities that bind members and foster relationships.
Relationship between cohesiveness and performance is significant.
Related to cohesiveness.
Groups often consist of members with similar characteristics.
Surface vs. Deep Level Diversity: Surface relates to visible characteristics; deep involves values and beliefs.
Presence of others can affect behavior compared to being alone.
Presence of others in tasks (e.g., exams) can influence performance.
Presence of Others: Performing tasks with others doing the same or an audience.
Study by Zajonc et al. (1969): Examined cockroaches running from light in the presence of other cockroaches.
Performance is enhanced in the presence of others for simple tasks but can decline for complex tasks.
Presence increases physiological arousal.
Arousal aids performance on simple tasks more than complex ones.
Being alert and vigilant.
Nervousness about evaluation (evaluation apprehension).
Distraction from task focus.
Individual efforts blend with group efforts, reducing individual accountability.
Examples: Clapping at a concert, playing in an orchestra.
Easier tasks: performance drops.
Harder tasks: performance improves due to less evaluation pressure.
Free-rider Effect: Some members don't contribute, expecting others to do so.
Sucker Effect: Efforts decrease due to the presence of free-riders.
Tendency to loaf is generally stronger in men and in Western cultures than in women and Eastern cultures.
Social Facilitations vs. Social Loafing: Performance dynamics hinge on the presence of others, either enhancing simple task performance or impeding it in complex scenarios.
Individual evaluation influences behavior and group performance dynamics significantly.
Key Takeaway: Understanding group dynamics aids in anticipating behaviors influenced by social contexts, applicable in academic and professional settings.