Which language do you think in if your bilingual?

I can talk in english and welsh, and i think in welsh. I think that it's because welsh is my first language and ive been bought up in welsh.

I'm multilingual, or a polyglot if you wish. I think in all the languages I speak in, which happens to be a lot of them! I also write a bit in many of them. When I was just bilingual, I thought in both English and Spanish, English being my native tongue. A plus tard mon amie, which is see you later my friend, in French! Pahkah, which is Russian for Bye!

You would normally speak in and think in the language that you first learned. Say someone grew up speaking English but learned how to speak Spanish really good later on, then they'd most likely speak and think in English and then use the Spanish whenever it is necessary. If someone grew up knowing two languages, then they'd probably speak and think in the language that most people speak around them.

I'm Welsh but can also speak English, German and Afrikaans fluent

I can also speak Dutch, French, Spanish, Irish, Cornish, a little zulu and polish but i'm not fluent.

I can think in All 4 languages i'm fluent in but i generally think almost exclusively in Welsh.

We actually had this discussion last semester with my Spanish instructor. She was telling us how you comprehend the words said but you must change them to your primary language when you learn it. She said after several years of doing this one day she was in Spain and was dialing a phone number and mentally thought it out in Spanish. This was a persona achievement for her and she was very excited but I do not know if this applies to everyone or not.

well you would assume both. afterall, how can you be truly bilingual if you cant think in both? i think more in english because i speak more in english but i think in both

I think in english but I dream mostly in spanish...

and i don't even talk that much english during the day, but i guess i'm used to it.

depends on where i am and what i've been speaking...it varies, sometimes its spanglish even (: