PSYCH257 Chapter Notes - Chapter 4: External Validity, Statistical Significance, Internal Validity

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH257
• Professor: Pamela Seeds

Document Summary

Hypothesis (educated guess, what you expect to find) Research design (how you want to test the hypothesis) Iv (influences on the behaviours on the dv) Internal validity (the extent to which we can be confident that the independent variable is causing the dependent variable to change) External validity (how well the results relate to things outside your study) Put it in words that are unambiguous and in a form that is testable. Confound (a variable that interferes with the iv and has an effect on the dv) Control groups (help rule out alternative explanations) Randomization (process of assigning people to different research groups, equal chance of being placed in any group) Analogue models (create in the controlled conditions of the lab aspects that are comparable (analogous) to the phenomenon under study) Staticians (gather, analyze, interpret data from research) Statistical significance (probability of obtaining the observed effect by chance is small) Mathematical calculation about the difference between groups.