Through repeated practice under conditions similar to those in real-world settings, simulator training prepares an individual to maintain effective performance under stressful work conditions. Interfaces offering high fidelity and immersion can more closely reproduce real-world experiences and are generally believed to result in better learning outcomes. However, absolute fidelity in stress training is not critical for skills to be transferable. The present study compared the performance outcomes achieved by trainees using two different simulator types to complete a training program aimed at improving decision-making skills. The purpose of this research was to assess both the overall level of training effectiveness and to determine whether performance levels were influenced when high (160 degree curved wide screen) versus low fidelity (small cab-based flat screen) simulator types were in use. Sixty-three train drivers drove for 40 min on a simulated track on which they encountered four major high stress driving events. One year later, 42 of the original drivers returned and repeated the training scenario a second and third time. Results revealed trainees using the lower fidelity flat screen simulator made fewer errors in both years than trainees using the high fidelity curved screen simulator. The implications of these results are discussed. (Contains 3 tables.)