Thank you for the article
I am working in the field on multilingual education and also have two kids whom are exposed to 4 languages in a natural way
I speak my mother tongue with them while the mother speaks her, me and the mother communicate in English while we live in another country so they learn the native language there they also have a 5th langauge...baby language which we all master quite well
Firstly it is well documented that there is a delay in mastering one language or another there are also ups and down in different periods
But more important which is missing in this article is the issue of learning abstracts
While you can teach a baby words such as water in several languages he would only be able to learn abstract words such as good and bad in his mother and father tongue
This is a very complex issue that involves moral and cultural development as well as primar-family identity development vs. seocndary-environmental development
I for one like the article suggests here would not advice a non native speakers of a language to speak that language to their kids it has been shown from research with the English Spanish parents in the USA that when the parents spoke English which was not their native language they have actually harmed their kids and in many cases created identity problems for them
On the other hand if your native language is not Hebrew it is absolute a must that you speak this language with your children
Thanks for the article I hope you could post more articles in this very exciting field