Sleep Training: A Review of Research 

The following is a list of resources (articles/websites/books) for research-based information on infant sleep, night time parenting, baby crying, need for nourishment and comfort at night, and physiological body and brain responses to 'controlled crying,' 'cry it out,' or 'sleep training' methods. Also see psychological conditioning studies on learned helplessness (which occurs to babies whose care-givers utilize these methods). 

http://www.drmomma.org/2009/12/sleep-training-review-of-research.html 

Dr. James McKenna

Mother-Baby Behavioral Sleep Laboratory at Notre Dame University
http://www.nd.edu/~jmckenn1/lab/

A great sleeping with your baby resource!

Videos:   http://www.nd.edu/~jmckenn1/lab/videos.html

Articles and Essays:  http://www.nd.edu/~jmckenn1/lab/articles.html

Safe co-sleeping:  http://www.nd.edu/~jmckenn1/lab/safe.html

Elizabeth Pantley
http://www.elizabethpantley.com

Elizabeth Pantley is the author of eight popular parenting books, available in 18 languages, and she was a contributing author to The Successful Child with Dr. William and Martha Sears. Best Start carries all of her sleep books because they use the gentle parenting methods instead of the "cry it out" methods. Visit her website for more parenting articles that she has written on the web.

Kathleen Kendall-Tackett Ph.D.

urvey of Mothers’ Sleep and Fatigue

http://www.breastfeedingmadesimple.com/CL_1-1_infant_sleep_location.pdf 

Mother-Infant Sleep Locations and Nighttime Feeding Behavior:  U.S. Data from the survey of Mother's Sleep and Fatigue

Article from SLATE magazine:  Go Ahead, Sleep With your baby