Functions of consciousness

Evolutionary theory indicates that consciousness has a function, if it is complex enough to be supported by genetically guided brain structures. Otherwise there would be no selective pressure against degrading it. Hints about its function come from word priming studies, where conscious awareness of a prime allows it to be avoided according to instructions. Consciousness, then, allows behavior to be driven by internal plans rather than primed contingencies from the momentary environment. Since consciousness is normally tested by memory of events, its mechanism may be a form of working memory.