PSYC 201W Lecture Notes - Lecture 10: Causal Inference, Measuring Instrument, Demand Characteristics

• School: Simon Fraser University
• Department: Psychology
• Course: PSYC 201W
• Professor: A.George Alder

Document Summary

Psyc 201 - lecture 10 - validity of experimental designs. Would include appropriate statistical analyses for specific type of data carried out. One thing determining how much power we have - having adequate sample size. Type ii error - study w/ not enough power to detect. Type i error - multiple analyses being conducted. Can result in error that is opposite of type ii error. Conducting multiple analyses on single data set increases likelihood that if effect if observed, effect occurred by chance & is not really a true effect. The more analyses we conduct in single study, the more likely we are to make type i error. Ecological validity - addresses generalizability to real life settings. Within category of external validity, we have ecological validity & this has to do w/ how well our research generalizes to real life settings. Mundane realism - similarity b/w experimental environment & real-world settings.