New York Times pointed to a study suggesting rear-facing strollers allowed for more interaction and chatter with babies, as opposed to more modern, forward-facing strollers. Interesting read.
http://www.nytimes.com/2009/03/02/opinion/02zeedyk.html?_r=1&ref=opinion
http://www.nytimes.com/2009/03/02/opinion/02zeedyk.html?_r=1&ref=opinion