I realize the question is directed at Pilgrim, but I have no doubt that God saves even those without cognition as we know it. Consider the unborn John the Baptist, leaping in the womb for joy upon the meeting of his mother and Mary (Luke 1:44). Consider also who the elect are according to the Scriptures:

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...not many wise according to the flesh, not many mighty, not many noble; but God has chosen the foolish...to shame the wise, and...the weak to shame the strong, and ... the things that are not to nullify the things that are, so that no man may boast before God (1st Corinthians 1:26-29, NASB)

-Robin