At a company like McKesson, the only psychology you're likely to encounter is organizational (I/O), and, like psychology in general, many many many people do no

At a company like McKesson, the only psychology you're likely to encounter is organizational (I/O), and, like psychology in general, many many many people do not believe in it, do not see the value in it, and heed cultural barriers to changing these attitudes. To the degree that I/O psych is a factor in corporate life these days, the vast majority will be a form of Taylorism, which is 100+ years old.