PSYCH 101 Lecture Notes - Lecture 17: Egocentric Bias, Availability Heuristic, Sample Size Determination
30
PSYCH 101 Full Course Notes
Verified Note
30 documents
Document Summary
Heuristics shortcuts that may or may not provide correct solutions. Example: inconsistent ratings as to how much husband and wife contribute to chores. Probably due to greater availability of self-actions than partner actions. Representativeness: events that are more representative are regarded as more probable. Most would guess thhtht because it is more representative of randomness: make decision ignoring important info: sample size and base rates. Sample size is important the law of large numbers. Base rates -how often the item occurs in a population. If given off shirt, 72% chance that person would drive to other store to get discount. If given off phone, only 20% chance that person would drive to other store to get discount. Anchoring & adjustment: important in making estimates, guess a first approximation; then adjust that number as we get more information, related to availability heuristic highly available information more likely to be given as the guess.
