PSY 380Thursday March 16, 2000

Today's Topic

The Influence of Groups

Announcements

Exam 2 grades posted today

Paper 1 handed back this week

Friday is last day to drop

Paper Assignment 2 available on website

Being in a group can influence task performance

Triplett (1898).

Experiment:

Social Facilitation (early definition)

Jogger experiment

Male joggers timed running from Point A to Point B

Attractive female confederate observes, either facing track or with back turned

Joggers run significantly faster... when?

Zajonc (sounds like "science") and his cockroaches

Two conditions

"lone cockroach"

in front of cockroach spectators

Zajonc's Results

Another roach experiment

Results

Update on social facilitation

Performance is affected by arousal. Arousal is caused by three sources:

Social Facilitation model

Social Loafing

Q:

A:

Social Facilitation vs Social Loafing models