Most people believe themselves to be less at risk from COVID-19 than others similar to them, according to a recent UCL survey conducted in the U.S.

When are you most optimistic? A study found how optimism varies throughout life.

Researchers look into the drug's association with pronounced optimism.

Envisioning all possible outcomes is far healthier than only praying for the best. 

Here's what Israel Guillen learned about life by studying 8 hours a day during his 22-year prison sentence.

Pregnancy is proving to be a crucial time to study the effects of hope and optimism within a relationship.

America today has normalized crimes, both physical and spiritual, says Cornel West—and being indifferent to that is the worst of all evils.

RIP pessimists, we barely knew you. Carnegie Mellon University's Professor Michael Scheier explains the impact your outlook has on the world inside of you, from your cells to your psychology.

Natural selection has left us with a world of optimists—is this healthy?

Many people will try to give you hope or sell it to you, says Richard M. Cohen, who was diagnosed with MS at 25, and has battled two bouts of cancer, but hope is an internal discovery.

Life is a temporary, cosmic accident and the universe may very well be meaningless. That's depressing — or is it?

Skepticism has a place, but it's optimists who decide the future, says Kevin Kelly.

A Harvard University study of women finds a link between optimism and risks of dying from a number of diseases.