ENSC 203 Lecture Notes - Lecture 2: Canadian Psychological Association, Parachuting, Blind Experiment
Document Summary
One skydiver scored 28, so the hypothesis is rejected. Skydivers are of less sound mind than other people. Independent variable: (group: find the consenting skydivers at the skydiver club, and non skydiving psyc 100 students, administer the mmse, compare mmse scores of two groups. If something varies systematically with the iv, it can lead to wrong conclusions. Non skydivers: university students vs non students. Objectivity, not influenced by emotions or personal views. Example: improving exam performance: students will study better with a single pill. Subject-expectancy effect: a placebo group is needed: placebo controlled trial, divided by eye colour. Observer-expectancy effect: a double blind control group is needed: changing the lighting in an experimental group. Demand artifact: use a less obstructive manipulation, less obvious to those in experiment: have volunteers report good strategies. Statistics: need a system to make sense of all data, this system is called statistics. There is no numerical value between the categories (a,b,c,d)