This hour, we question what decides the trajectory of our lives -- individual force of will, or fate?

If destiny isn't written in the stars, could it be written in our genes? Kids struggle to resist marshmallows, and their ability to holdout at age 4 turns out to predict how successful they're likely to be the rest of their lives. And an unexpected find in a convent archive uncovers early warning signs for dementia in the writings of 18-year-olds.

***Your Future in a Marshmallow

***Singled Out

***Searching for Clues

[October 14, 2010]