PSYC 2001 Study Guide - Final Guide: Statistic, Statistical Inference, Standard Error

• School: Carleton University
• Department: Psychology
• Course: PSYC 2001
• Professor: Jordan Schoenherr

Document Summary

An experimental design using a separate, independent group of individuals for each treatment condition being compared. Characteristics that differ from on participants to another. A random process for assigning individuals to groups that has a limitation to ensure predetermined characteristics (such as equal size) for the separate groups. The assignment of individuals to groups so that a specific variable is balanced or matched across the groups. A threat to internal validity from any outside event that influen(cid:272)es the parti(cid:272)ipants" scores in one treatment differently than in another treatment. A threat to internal validity from any physiological or psychological changes that occur in a participant during the time that research study is being conducted and that can influen(cid:272)e the parti(cid:272)ipant"s s(cid:272)ores. A threat to internal validity form changes in the measurement instrument that occur during the time a research study is being conducted. Also known as instrumental bias or instrumental decay.