Who was an early proponent of functionalism with a special interest in the stream of consciousness?

The answer to this question would be William James.

William James studies how did the process of thought in human works. He was a medical doctor from Harvard and later become a prominent psychologist. 
It is called stream of consciousness because it is assumed that thinking is like water on the river that will always be flowing.

Ibelieve it would be d (side effect) sorry if i'm wrong(:

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