PSYB01H3 Chapter Notes - Chapter 4: Artificiality, Field Experiment, Random Assignment
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Chapter 4: fundamental research issues *(take out pages 77-83, and 86-90) Three types of validity: construct validity, internal validity and external validity. A variable is any event, situation, behavior, or individual characteristic that varies. Any variable must have two or more levels or values. The operational definition of a variable is the set of procedures used to measure or manipulate it. Cognitive task performance, self-esteem and word length (can be measured and manipulated) A variable must have a o. d to be studied empirically. If you wish to scientifically study the variable of extraversion, you need some way to measure that variable. Does playing violent video games result in greater aggressiveness? four common relationships found in research: positive linear relationship, negative liner relationship, curvilinear relationship and no relationship. Positive linear relationship increases in the value of one variable are accompanied by increases in value of another ex. Higher speech rates are associated with attitude change.
