PSYC 2001 Study Guide - List Of Middle-Earth Rivers, Coefficient Of Determination, Inter-Rater Reliability
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How can we compare groups: within subjects designs individuals and subject them to the different treatments as an independent measures experimental design, between subjects designs to be discussed later. Use the same group of: can you think of advantages and disadvantages for both approaches? different individuals in different groups also known independent score; protects against: practice/ experience, advantages: fatigue/boredom, contrast effects, disadvantages: Individual differences can also produce high variability in scores. Individual differences and confounding: confounding from individual differences is also called assignment bias ie age, confounding can occur because of environmental variables ie large room vs small. Ses room: solution: equivalent groups, created equally (same selection process, treated equally, composed of equivalent individuals. Equivalency: random assignment, matching, must identify correct cariable first, must measure it, time consuming/costly, cant match everything, finally holding groups constant can create equivalency (ie; use all females)
