“On sunny days, people are more optimistic about the stock market, report higher well-being and are more helpful while extended exposure to dark, gloomy days can result in seasonal affective disorder,” explained Alison Jing Xu, assistant professor of management at University of Toronto Scarborough.
Xu, along with Aparna Labroo of Northwestern University, conducted a series of studies to examine the unusual paradox of lighting and human emotion.
