Learning can be defined as occurring under two conditions. First, learning occurs when an organisation achieves what it intended; that is, there is a match between its design for action and the actual outcome. Second, learning occurs when a mismatch between intention and outcome is identified and corrected; that is, a mismatch is turned into a match.... Single-loop learning occurs when matches are created, or when mismatches are corrected by changing actions. Double-loop learning occurs when mismatches are corrected by first examining and altering the governing variables and then the actions.

Chris Argyris (1982) as cited in: "Chris Argyris: The Manager's Academic" in Business (2003). p. 965