Many people pay attention to media reports of the US stock market’s performance. Using a data-based thought experiment, we cast the market’s recent highs and lows in an unusually unattractive light. The result matters because the economic and political factors that make it relevant are...

The stock index “point” is a focal component of financial news reports. While much attention is paid to changes in stock index point totals, few people realize that the value of a stock index “point” varies (and has recently declined). We call this perceptual phenomenon “point...