Teresa Amabile is a well-known creativity researcher, who has focussed on the effects on creativity produced by evaluation, rewards, competition and constraints. I find it very interesting that Dr. Amabile is a professor of business administration (and at Harvard University). Some material from her book, Creativity in Context (1996, Westview Press) is summarized below. According to Amabiles experimental results, evaluation (as, say, good or bad) and rewards have very similar results on creativity. The results depend upon the nature of the task -- is it * Heuristic, where many possibilities must be explored OR * Algorithmic, where the task is primarily a linear series of steps, where the order is clear.