Hw: quiz thursday 9/15 midnight connect. The need for psychological science: problems with common sense. A: because people with high self-esteem are already confident in themselves, while people with low self-esteem think lesser of themselves. Real finding: people w/ low self esteem are actually more susceptible to flattery than those w/ high self esteem: predict who will win the election: clinton 62, most true: birds of a feather flock together. Description: what is the nature of the phenomenon: correlation. Prediction: from knowing x, can we predict y: experimental. When we want to know what is the nature of the behavior: case study (great when something uncommon happens to someone) Examine one person in depth to understand human nature in general. Ex: phinneas gage (spike went into head and damaged prefrontal cortex) When researchers observes people and systematically records measurements of their behavior. Some behaviors are difficult to observe: survey research.