PSYB01H3 Chapter Notes - Chapter 8: Emor, Repeated Measures Design, Observational Error
Document Summary
Experimental method is a vital and versatile tool in the researcher"s toolbox the experimental method controls for extraneous variables. E. g. you want to test hypothesis on crowding on cognitive performance one group put in a crowded room, others in uncrowded room. Confounding variable=> varies along with the iv; confounding occurs when the effects of the iv and an uncontrollable variable are intertwined so that you cannot determine which of the variables is responsible for the observed effect. Planning a basic experiment: the simplest possible experimental design has 2 variables: the. When there are only 2 levels of the iv, the design looks like this: Selection difference=> the ppl selected to be in the conditions cannot differ in any systematic way. First step to planning an experiment in choosing the participants. Independent group designs: independent group designs=> also called between-subjects design, different participants are assigned to each level of the iv using random assignment.
