Carl Westin

6-6 Method study 2 135 6-6-3 Materials A Google Forms online survey was created, consisting of three 7-point Likert Scale questions addressing self-perceived consistency in solving right angle (90 degrees) conflicts in general, the right angle designed conflict in particular, and to what extent participant’s believed their colleagues had solved the designed conflict differently. In addition, an open-ended question asked participants to solve a static conflict pre- sented on the screen, which was the designed conflict used in the simulation. This allowed for comparing participant’s answers with their conflict-solving styles as de- rived from simulation data. 6-6-4 Measurement scenario and designed conflict A larger sector, 80 x 80 nmi, was used to reduce congestion and allow for more maneuverability, which may have restricted solutions in Study 1. The measurement scenario and designed conflict were based on the Scenario 1 conflict in Study 1. Parameters of the designed conflict are shown in Table 6-4. Two scenario rotations were used. A reciprocal, symmetrical, conflict angle was selected to mitigate biased solutions and provide identical solution possibilities for both aircraft. Furthermore, both aircraft were configured equidistant from the CPA, traveling at the same speed in zero wind with identical speed envelopes. The lateral deviation required to solve the conflict was the same for both aircraft, irrespective of a vector in front or be- hind the other. In terms of additional track miles, however, vectoring either aircraft behind the other would be more efficient. Because of the symmetrical conflict pa- rameters, the only expectation was that one aircraft would be vectored behind the other as this would result in less track miles to clear the conflict. 6-6-5 Procedures Participation lasted roughly one and a half hours and included a simulation and questionnaire part. After consent procedures and simulator briefing, participants played fourteen training runs (roughly 50 minutes) followed by the main experiment consisting of ten scenarios, each two minutes long (roughly 20 minutes). The ten scenarios consisted of the four repeats intertwined with six “dummy” scenarios. The dummy scenarios were used, together with scenario rotations, to prevent scenario recognition. Scenario order was varied according to a Latin Square design. Traffic was restricted to the horizontal plane (flight level 270).