Optimism was measured in various ways, some with a single question, some with multiple (for instance, participants in one study rated seven statements, including, “I often feel that life is full ...

Turns out, only about 25 percent of optimism is genetic, meaning you inherit your natural tendency to see the glass half-full ...

Optimism isn't just good for mental health — it could boost your bank account, too. Research across multiple countries found ...