Winter brings more than just ugly sweaters — how the season affects minds and behavior

WHAT COMES TO mind when you think about winter? Snowflakes? Mittens? Reindeer? In much of the Northern Hemisphere, winter means colder temperatures, shorter days and year-end holidays.

Along with these changes, a growing body of research in psychology and related fields suggests that winter also brings some profound changes in how people think, feel and behave.