Answered By: Todd White Last Updated: Jun 15, 2015 Views: 82
It looks like the book you are interested in is this -
Carter, R, Aldridge, S., Page, M., & Parker, S. (2009). The Human Brain Book. New York: DK.
It is a young adult book.
I believe this is the passage being referred to:
"At around three years, the hippocampus matures, allowing the retention of memories. Few memories can be recalled from before this time" (p. 203).
DK publishes gorgeous, illustrated young adults book. Since this book is not intended to be scholarly, there is no direct attribution to this information.
If you want to investigate this more, you can request this book be sent to you via our ROVER service - http://libguides.css.edu/content.php?pid=201764&sid=1686415