PSYC207 Study Guide - Final Guide: Internal Validity, Quasi

• School: University of Delaware
• Department: Psychology
• Course: PSYC207
• Professor: Begosh Kristen

Document Summary

Psyc 207: research methods--final exam study guide s16. Dependent groups experiments: same participants in every level of independent variable. Within-participants dependent groups experiment: repeated measures (same measurements at different times) Matched-groups dependent groups experiment: match similar individuals to one another; treat as same person. More power than independent groups (detecting real difference) Incomplete design: each participant receives every level of independent variables, but only once. Order of levels is varied across participants to average-out carryover effects. Latin square: each condition is in each ordinal position exactly once, and each condition precedes and follows each other exactly once. Random start with rotation: present random order of levels to first participant, then for each subsequent participant, shift up by one. Complete design: each participant gets every level of the independent variable more than once. Reverse counterbalancing: each participant gets a random order and its reverse. Block randomization: create random blocks and present those blocks randomly to each participant.