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4           group size

                              Group size affects a group’s behavior, but the

                                        effect depends on what criteria you’re using.                  6


                     small group Better at:                             Large group Better at:

                     (5–7 members)                                      (12 or more members)
                     • Completing tasks faster     Lantapix/Shutterstock  • Problem solving

                                                                                                      Lantapix/Shutterstock
                     • Figuring out what to do                          • Finding facts
                     • Getting job done                                 • Gaining diverse input

                     Drawbacks of Large Groups:                            When using large work

                     •  Individual productivity of each group mem-              groups, managers
                        ber declines as the group expands, which is         should find a way to

                                                    7
                        known as social loafing —reducing effort             identify individual
                        because dispersion of responsibility encour-                     efforts.
                        ages individuals to slack off.

                         —  When a group’s results can’t be attributed
                            to any single person, individuals may be tempted to become “free riders” and coast on the
                            group’s efforts because they think their contributions can’t be measured.


                  5           group Cohesiveness





                              The degree to which members are attracted to one another

                              and share the group’s goals


                     •  Groups that experience a lot of internal disagreement and lack of cooperation are less
                         effective than are groups in which individuals generally agree, cooperate, and like

                         each other.

                     •  The more that members are attracted to one another and the more that a group’s goals
                         align with each individual’s goals, the greater the group’s cohesiveness.

                     •  Highly cohesive groups are more effective than are those with less cohesiveness.


                     However, the relationship between cohesiveness

                                 and effectiveness is more complex.                                      8




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