>>11320870There have been some studies on this.
"Among New Jersey mall shoppers, IQ fell a full 13 points when researchers tasked them with a difficult financial decision, a cognitive impairment roughly equivalent to losing a full night of sleep. Farmers saw a nine to 10 point difference from one month to the next.
"One month after the harvest, they're pretty rich, but the month before - when the money has run out - they're pretty poor," Mullainathan noted in the report, which was published on Thursday in the journal Science. "What we see is that IQ goes up, (when they are rich)... errors go way down, and response times go way down.""