PSYC 217 Lecture Notes - Lecture 8: Psychometrics, Standard Deviation, Random Assignment
Document Summary
That the iv caused the changes in the dv. Things you can do in terms of iv, dv, actual methodology used. Sometimes it"s not just about the stimulus or the conditions of the operational definition, it can be avoiding alternate explanations, demand characteristics, experimenter expectancy effects. Want to avoid ceiling and floor effects to maximize our data"s uses. Any time that you are doing a study, it would be difficult for you to know the results if the participants already knows what the hypothesis is. Threat to internal validity; impacts ability to draw causal conclusions in experimental conditions. When people act differently because they know they"re being observed; originally it was taken to mean helping experimenters, but since it is broader and includes helping or harming. When you"re on stage and you get nervous because you"ve thousands of people watching. Essentially the fact that people get anxious -- when they are getting evaluated.
