"Why don't we remember the first few years of our lives?" asks David Foulger from Cheltenham.

The team investigate the phenomenon of 'infant amnesia' and how memories are made with Catherine Loveday from the University of Westminster.

A whopping 40% of people say they can remember back to before they were two years old, and 18% can recall being babies.

But can we really trust these early memories? Martin Conway from City University discusses his latest findings, taken from data gathered during 'The Memory Experience' on BBC Radio 4.

Presenters: Hannah Fry, Adam Rutherford