PSYC 102 Lecture Notes - Lecture 2: Gallup (Company), Big Data, Heritability
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Theories are how we explain a phenomenon (hypotheses are specific predictions we make; research tests those predictions) Success is fueled more by persistence than intelligence. Measure determination and gpa and test for a relationship. Student who report high levels of determination have gpa. Eg: using correlations in twins to measure heritability of a trait. Eg: double-blind, placebo-controlled study of treatment effectiveness. Political polling and the challenge of getting a true random sample. We gave four good pollsters the same raw data. Assignment of numbers to objects or events according to rules. Specifying the procedures (operations) used to observe a variable. Magnitude of value = strength of relationship. Perfect positive correlation = straight line increasing to the right (1 for. Perfect negative correlation = straight line increasing to the left (1 for. Ss = p value = . 5 = less than 5% probability that the relationship between variables could have happened by chance. Scientists can better detect true effects when:
