by Bill Murphy Jr.

Forty years ago (not to the day, but close), the #1 most popular song in America was “Down Under,” by the Australian band “Men at Work.”

The subject line today is the strange first line from the song; I mention it because today’s newsletter is about (lower case): “men at work.”

I came across a study a while back that says there’s one single, somewhat surprising factor that predicts whether men will describe themselves as “happy” (and rank highly on a gauge called the Positive Mindset Index).

The research was led by John Barry, a University College London psychologist. Here’s the survey, the results, and what it tells us about American men today.