A study by Wendy Middlemiss and colleagues for the University of North Texas found that when babies between the ages of 4-10 months were subjected to a sleep training program that was based on the extinction method (controlled crying), the crying decreased over 3 days. The disturbing finding was that although the babies became quieter, their salivary cortisol levels remained high, even when their mother’s cortisol levels had reduced. The babies no longer showed they were distressed through their behaviours but they remained psychologically distressed.
The impact of Extended Crying on Babies
About Safe Sleep Space
Hi Sam and family, Not only is it great that you were able to experience the change from disrupted sleep to sleeping through the night, but also having the confidence to tell all. I can't begin to tell you how often I hear similar stories. As much as you may have felt like you were alone, there are so many in your position, that's why we added to DVD to our resources. Thank you very much for sharing your story. Sleep well Helen SSubscribe
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Safe Sleep Space 0 to 4 Months: Online Video 
Safe Sleep Space Overview: Online Video
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