PSYC 1010 Chapter Notes - Chapter 21: Dan Ariely
20 May 2018
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PSYC 1010 Chapter 21 Notes
Introduction
Statistical Reasoning in Everyday Life
• Psychology also speaks to our deepest longings—for nourishment, for love, for
happiness.
• Psyhology aot addess all of life’s geat uestios, ut it speaks to soe ighty
important ones.
• In descriptive, correlational, and experimental research, statistics are tools that help us
see and interpret what the unaided eye might miss. Sometimes the unaided eye misses
badly.
• Researchers Michael Norton and Dan Ariely (2011) invited 5522 Americans to estimate
the percent of wealth possessed by the richest 20 percent in their country.
• The aveage peso’s guess—58 percent—daatially udeestiated the atual
wealth inequality.
• The wealthiest 20 percent, they reported, possessed 84 percent of the wealth
• Accurate statistical understanding benefits everyone.
• To be an educated person today is to be able to apply simple statistical principles to
everyday reasoning.
• Oe eed’t eoize opliated foulas to thik oe lealy ad itially aout
data.
• Off-the-top-of-the-head estimates often misread reality and then mislead the public.
• Someone throws out a big, round number.
• Others echo it, and before long the big, round number becomes public misinformation.
• Ten percent of people are homosexual.
• Or is it 2 to 4 percent, as suggested by various national surveys
• We ordinarily use only 10 percent of our brain.
• Or is it closer to 100 percent
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