“…Collins (2005, 2007) and Abraham and Collins (2011) originally conceptualized the professional judgement and decision making (PJDM) approach as a synergy of nested decision making over short-, medium-, and long-term timescales to achieve a predefined set of intended, and individualized, outcomes. In outdoor activities, Collins and colleagues (e.g., , Collins, Collins, and Willmott 2016, 2016a conceive PJDM as a graded continuum in which the interaction of logical linear "slower" processes and "faster" naturalistic processes (Kahneman 2011) are differentially integrated, depending on the nature and context of the decision to be made (Cotterill andDiscombe 2016, Harvey, Lyle, andMuir 2015). Practically, PJDM is developed and deployed through in-action, on-action, and onaction/in-context reflections, which are underpinned by a metacognitive ability .…”