In fact there’s been a lot of research on this topic. For the most part, I’ve cited a study by Teresa Amabile of Harvard showing that when people feel more time pressure, they are less creative. Now I’ve read a new study* by Marcus Baer and Greg Oldham, that extends this finding. One difference is that they examine a special kind of time pressure: “creative time pressure” which is, specifically, how much time pressure you feel when engaging in the more creative tasks at work–in contrast to deadline pressure for a more ordinary, non-creative task. A second difference is that they separate employees into two personality groups: one that is high in openness to experience (which suggests they will have a broader repertoire of ideas and concepts) and one that is low; and, they separate employee context into “high support for creativity” and “low support for creativity.”