Editing Twin (section)

==Language development==
There have been many studies highlighting the [[language development|development of language]] in twins compared to single-born children. These studies have converged on the notion that there is a greater rate of delay in language development in twins compared to their single-born counterparts.<ref>{{cite journal |last=Thorpe |first=K |title=Twin children's language development |journal=[[Early Human Development]] |date=June 2006 |volume=82 |issue=6 |pages=387–395 |doi=10.1016/j.earlhumdev.2006.03.012 |pmid=16690234}}</ref> The reasons for this phenomenon are still in question; however, [[cryptophasia]] was thought to be the major cause.<ref>{{cite journal |last=Usher |first=L |title=Idioglossia |journal=Times Literary Supplement |date=13 October 2000|page=24}}</ref> [[Idioglossia]] is defined as a private language that is usually invented by young children, specifically twins. Another term to describe what some people call "twin talk" is cryptophasia where a language is developed by twins that only they can understand. The increased focused communication between two twins may isolate them from the social environment surrounding them. Idioglossia has been found to be a rare occurrence and the attention of scientists has shifted away from this idea. However, there are researchers and scientists that say cryptophasia or idioglossia is not a rare phenomenon. Current research is looking into the impacts of a richer social environment for these twins to stimulate their development of language.<ref>{{cite journal |last=Hayashi |first=C |title=Relationship between Twin Language, Twins' Bond, and Social Competence|journal=Twin Research and Human Genetics |year=2007}}</ref>