Professors Steven Brenner and Earl Molander, in an eponymous 1977 article, compared the results of a situational ethics test that 1,200 HBR readers had taken the previous year with a similar test readers had taken back in 1961.
They posed four hypothetical situations, asking in each case: What would you do?, and "What do you think your colleagues would do?" It's a quick test, and intriguing, and you can take it here right now.