KEY TERMS AND IDEAS 

HINDSIGHT BIAS	CRITICAL THINKING
THEORY	HYPOTHESIS
REPLICATION	CASE STUDY
SURVEY	FALSE CONSENSUS EFFECT
POPULATION	RANDOM SAMPLE
NATURALISTIC OBSERVATION	CORRELATION
ILLUSORY CORRELATION	EXPERIMENT
PLACEBO	PLACEBO EFFECT
EXPERIMENTAL CONDITION	CONTROL CONDITION
RANDOM ASSIGNMENT	INDEPENDENT VARIABLE
DEPENDENT VARIABLE	STATISTICAL SIGNIFICANCE
HUMILITY	OVERCONFIDENCE
SKEPTICISM	POWER OF SCIENTIFIC THEORY IN PREDICTION
OPERATIONAL DEFINITION	SAMPLE
VIVID CASES	POSITIVE CORRELATION
NEGATIVE CORRELATION	CORRELATION IS NOT CAUSATION
RANDOM SEQUENCES	CAUSE AND EFFECT