To create an ai that replicated humanlike thought processes, it would likely require that it must be a learning ai. It's initial data set would only include "instictual" information. And some form of motivational factors would need to be implemented to get it to do...anything.
One of the key features of our minds that I personally believe contributed to self awareness, is the degree of interconectivity of various specialty regions of our brains. Where each section of our brains has a function, and a purpose. And at times the regions cooperate, and sometimes they conflict. There is conflicting emotions, thoughts, and motivators and they are all interconnected. The results are, imo, obvious in our behaviour as a species.
Additionally, another aspect to noticeable self conciuosness, and humanlike behavior. Is a data filtering system. We take in far more information that we are capable of recording for practical use. As such, we filter that data into what is relevant and dump the rest. With out something similar an ai would be too preoccupied with gather data and information to even function.
>.> Sounds like something else I know of.....
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Not all those that wander are lost - JRR Tolkien