Daniel Kahneman obituary

Influential psychologist who studied how people make decisions and changed the way economists thinkThe psychologist Daniel Kahneman, who has died aged 90, won the 2002 Nobel prize for economics despite describing himself as “mostly cheering … from the sidelines” of the subject. He achieved celebrity status in 2011 with the pop psychology book Thinking, Fast and Slow, at the age of 77 and after a lifetime of rigorous academic research. Such unpredictable events were typical of