I am completing my PhD Thesis: Getting on the Same Page: a Classic Grounded Theory of work teams using Edward de Bono's thinking tools, with implications for Complexity Leadership.
A short article on the Six Thinking Hats technique is at https://www.researchgate.net/publication/239823675_Wearing_Six_Thinking_Hats; it argues that the difference between poor and effective teams lies not so much in their collective mental equipment but in how well they use their abilities to think together.