delayed speech in bilingual children?

[Monika Pawlowska]

Dear Info-CHILDES,

I am looking for information about the following two questions:

1. When do children raised in a bilingual home start producing their
first words and how do they compare to children raised in monolingual
families?

2. Is there any way to tell whether delayed speech is caused by being
exposed to two languages at the same time, or whether it is a sign of a
deeper problem?

I would appreciate references to any relevant studies.

Thank you

Monika Pawlowska