“We looked at 8 to 10 activities that happy people engage in, and for each one, the people who did the activities more — visiting others, going to church, all those things — were more happy,” Dr. Robinson said. “TV was the one activity that showed a negative relationship. Unhappy people did it more, and happy people did it less.”

But the researchers could not tell whether unhappy people watch more television or whether being glued to the set is what makes people unhappy. “I don’t know that turning off the TV will make you more happy,” Dr. Robinson said.

Still, he said, the data show that people who spend the most time watching television are least happy in the long run.

Since the major predictor of how much time is spent watching television is whether someone works or not, Dr. Robinson added, it’s possible that rising unemployment will lead to more TV time.

Maybe being happy involves denial of reality!