Martin (2013) uses the notion of maturing-time (MT) proposed by Averty Athènes, Collet, andDittmar (2002) to analyse the time elapsed between conflict detection and the moment when there solution action plan is implemented. The examination of the average participant MT shows important variations depending on individual participants, as its value varies by up to 100%. The descriptive analysis of the distribution of MT values has shown three distinct groups of air traffic controllers: those who act soonest; those who use an intermediate MT value; and those who wait. Martin et al. (2013)explain that when operators assess the action-related uncertainty level as too high, they may decide to delay the action until the most appropriate time.