Thursday, February 14, 2008

Group Behaviors - Diffusion of Innovation

o Semester before Siegel began to teach SB721, sat in on class that had been getting poor evaluations
• Attendance of class – tipping point for people to not show up
• Now we have seminars, so we have to show up more often
• People didn’t skip until they had enough other people – established pattern – to follow
 $100 to stay ($400 per lecture. He realizes this.) and students wouldn’t walk out?
 15 people at second-to-last lecture
• People stop coming because they recognize that there are no negative consequences
 Not a rational weighing of individual behavior?
 A rational weighing of consequences to other people…
• To demonstrate this (and fashion is a good place to do this) you would have to demonstrate a reversal in behavior simply due to the amassed action of other people – such that the only data new to the individual is the number of other people performing an action

o Siegel doesn’t clean the board if the person before him doesn’t – this can’t be explained by individual actions?

o Empty lot (better metaphor is the sink full of dishes – do you wash your dish or add to the pile) – Siegel also litters if it’s into a lot that’s already dirty

o Speeding – if someone speeds past you, you speed?

Way to go class - attack the people are sheep theory by arguing for a rational weighing of individual consequences.