Sue Palmer's book "Toxic childhood" has a chapter about the media and it's effects on childhood.
Chapter 9 the electronic village. At the end she references some further reading -
"The media diet for kids" by Teresa Orange and Louise O'Flynn
http://www.familiesonline.co.uk/article/ar...view/1488/1/53/and
"Remotely Controlled:How television is damaging our lives and what we can do about it" by Aric Sigman (Vermillion 2005)
http://www.randomhouse.co.uk/catalog/book....data=0091902606Not sure what they are like but Sue Palmers book is good.
http://www.suepalmer.co.uk/She has also written an accompanying book for parents called "Detoxing Childhood".