Implementation of intention/planning. Implementation of intention, termed ''planning'', is a potentially important factor facilitating translation of intention into behaviour [42, 43, 46, 47] . Planning is specific to situations (e.g., when, where, and how) within which one will perform the behaviour [46] . It activates the situational context for goal attainment and thereby makes the goal become more accessible [46, 47] . A meta-analytic review showed that implementation of intention as planning consistently caused a medium-to-large effect on behavioural change [47] .