Psychology 1000 Lecture Notes - Lecture 12: Standard Deviation, Frequency Distribution, Leonard Berkowitz

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Frustration makes you angry, and the more frustrated you are, the more likely you are to act on aggression. Boyanowsky (1982: the presence of a weapon while angry makes you more angry. They increase the likely hood of aggression even if not used. Black and bevan: aggression scale to movie goers before or after seeing violent or non violent movie, after watching violent movie, reported more violent feelings, non violent movie did nothing. Statistics: simplify with a few numbers, mean (sum divided by number of terms) Add up numbers and divide by n(number of terms: median (midpoint) Midpoint of a ranked distribution: mode. Easy to identify from frequency distribution: when all three of mean, median and mode are the same, you get a perfect even bellcurve, range. Same value can be obtained by a variety of scores, not good representation. Degree of fluctuation of scores around the mean. Some distributions have high variance, others are relatively low.