Comment author: Viliam_Bur 06 July 2012 08:13:45AM *  6 points [-]

I think that bilingualism also delays speech somewhat. (But I am not sure about this information.) If that is correct, then spoken + sign languages are simply another instance of bilingualism.

Comment author: AlexSadzawka 10 July 2012 08:52:39PM 1 point [-]

A coworker of mine had some problems to get her son admitted to a top school here in Chile. The kid lives in a bilingual home and speaks both English and Spanish at a level below the level of a monolingual kid.

This looks like a positive data point for your hypothesis.

Comment author: AlexSadzawka 19 April 2010 01:17:12PM 6 points [-]

Hi, a financial analyst here.