PSYC 2700H Chapter Notes - Chapter 2: Random Assignment, Field Experiment, Internal Validity

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Hindsight bias (when ppl exaggerate how much they could have predicted the outcome after knowing that it occurred) Theory (organized set of principles that can be used to explain observed phenomena) Hypothesis (testable statement or idea about the relationship btwn 2+ variables) When a researcher observes ppl and records measurements of their beh. Used if the goal is to describe what a group of ppl or beh. is like. Ethnography (researchers attempt to understand a group/culture by observing it from the inside without imposing any preconceived notions they may have) Archival analysis is another form of observational method where the documents of a culture are examined (newspaper, novels, tv, movies, etc. ) When researchers measure 2+ variables and asses the relation btwn them. Corelation coefficient (stat that assess how well you can predict 1 variable from another) (+ means increase, - means decrease) o.

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