Carl Westin

6-5 Results study 1 131 QS QS OM OM QS QS OM OM H H H S S S C C C R R L I D D RI RI RD RD LI LD Geometry preference (DS 1) Aircraft choice (DS 2) Resolution type (DS 3) Direction (DS 4) 92.2% 7.8% 7.8% 60.9% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 3.1% 4.7% 4.7% 4.7% 4.7% 31.3% 31.3% 26.6% 26.6% 29.7% 17.3% 17.3% 1.6% 1.6% 1.6% 1.6% 1.6% H = Heading; S = Speed; C = Combined; R = Right; L = Left; I = Increase; D = Decrease F IGURE 6-7: Solution distribution for the Solution geometry classification in propor- tion (%) of total solutions, Scenario 1, Study 1. Figure 6-8 shows the proportion of participants with consistent problem-solving styles who arrived at the same geometry across repetitions. Overall, participants were found highly consistent, except for Scenario 2 in which more than half (56.2%) solved the conflict inconsistently. Agreement was high in all scenarios, especially in Scenarios 1 (93.8%) and 4 (100.0%). Overall, all scenarios were solved according to expectations when considering DSs 1 and 2. In general, participants preferred to solve respective conflicts with QS passing ahead of OM (Scenario 1), PA passing ahead of RG (Scenario 2), RG passing ahead of SM (Scenario 3), and QS passing ahead of PA (Scenario 4). 6-5-4 Intervention time Intervention time was measured from scenario start until the first action taken to solve the conflict. Consistency was determined by analyzing intervention time vari- ations across repetitions, with a narrower time range representing higher consis- tency. Results need to be considered cautiously since intervention time was influ- enced by the conflict warning alerting system. The attentional effect of the warning was especially salient for Scenarios 1 and 4, with 92,2% and 85.9% of all conflicts being solved after the alert, respectively. In Scenarios 1 and 4, roughly half of the participants interacted within the same five-second range (50.0% and 43.8%, respec- tively). In contrast, Scenarios 2 and 3 were often solved before the warning (79.7% and 60.9%, respectively), although only 6.3% in both groups interacted within a five-second range. Mann-Whitney U and Kruskal-Wallis H tests were performed to examine the relationship between intervention time and consistent problem-solving