At that point in time, I was unsure how to build a theory. I did have a negative exemplar—an example of what not to do. My exemplar was Frederick Herzberg, who with Mausner and Snyderman, published their famous motivator-hygiene theory in 1959, based mainly on two interview studies. My initial skepticism was that two studies are not a sufficient basis for building a theory. I also had doubts, shared by many, about his exclusive reliance on the critical incident technique to elicit the causes of job satisfaction and dissatisfaction.