Older mothers may be more prone to depression than younger women
Preliminary study suggests risk of depression is five times as high among women who have children later in life
Childhood abuse may stunt growth of part of brain involved in emotions
Three key areas of the hippocampus in the brain were smaller in people who reported maltreatment in childhood
Why willpower matters – and how to get it
Willpower is a mental muscle that you can train. Those who do so are more likely to lead happy and successful lives
Maximum Willpower: How to master the new science of self-control, by Kelly McGonigal; Willpower: Rediscovering Our Greatest Strength, by Roy F Baumeister and John Tierney – review
Who can resist the temptations of our times? If you can you've got it made, say two books on the importance of willpower. By Carole Cadwalladr
Blue Monday: a depressing day of pseudoscience and humiliation
A psychologist explains why the third Monday of January has for him become the most depressing day of the year
How I remember: The pianist
Joanna MacGregor says that when memorising music it is important to develop your intellectual memory rather than relying on your muscle equivalent
What are memories made of?
Neuroscientists have discovered that memories migrate between different regions of the brain, but what do they actually consist of?
How to maximise your memory
Forget rote learning, one of the best ways to commit something to memory is to think of associated images – the more outlandish, the better
How I remember: The taxi driver
Peter Allen on how London taxi drivers learn the names of the city's 25,000 streets, and the quickest routes between them
Can memory improve with age?
As we grow old, our memory starts to fail. Or does it? While some degeneration is inevitable, research has shown that parts of the brain actually improve with age, writes Jon Simons