1898-1969 2010av-0139 2011d-365 20thcentury biography brain counselingof cybernetics engineers graduatestudentscolumbiauniversity graduatestudentsinscience history lawrence mcculloch mentoringintheprofessions mentors neurophysiologists neurophysiology neuropsychiatry proteins q147 research science scientists shapiro unitedstates vocationalguidance warrens womeninscience womenscientists wz100