'Pre-commitment helps boost willpower'

Molly Crockett says "pre-commitment" could be more effective than willpower alone.

26 July 2013

3 minutes

This clip is from

Today—26/07/2013

Employers have 'social duty' to employ locally
Duration: 03:24
Church of England 'must be consistent'
Duration: 16:17
'Lessons will be learned' from train crash
Duration: 07:30
Olympics had 'incredible effect' on school children
Duration: 03:30

Concern that vitamin B12 deficiency can cause delusions
Duration: 05:48
Have headphones made us more anti-social?
Duration: 03:56
Sound of the Year awards winner announced
Duration: 05:02
Shaparak Khorsandi: It's very hard to talk about Iran
Duration: 03:54