You may be familiar with the fear of missing out, or FOMO, the concern, often fueled by social media, that friends are having more fun than you.

But how do you know if you suffer from it? There's a simple test for this modern-day affliction, devised by American and English researchers.

Take this short FOMO test at to see if your social-media fueled day is making you feel like you're always missing out on the party.