Over at her "Insights You Can Use" blog Esther Derby has posted two pieces on how teams can benefit from the lens of Double Loop Learning in their retrospectives. Chris Argyris first wrote about the concept of single and double loop learning in the 1970's. Esther offers a specific application for Agile teams with:
A short essay, "Promoting Double Loop Learning in Retrospectives"
and
A slideshow, "Double Loop Learning in Retrospectives II"
To learn more about Chris Argyris and his theories of action, including double loop learning, see:
Smith, M. K. (2001) 'Chris Argyris: theories of action, double-loop learning and organizational learning', the encyclopedia of informal education, www.infed.org/thinkers/argyris.htm. Last update: September 07, 2009
and
Wikipedia. ""Chris Argyris"