Secondary outcomes
Exploratory analysis was performed by looking for group differences in the post-test of the GOALS Score, the error score, and the total procedure time in minutes. These analyses were performed using the unpaired t tests with equal variances. The individual sub-items of the error score were analyzed with Chi-Square test. Since the study was conducted as a clinical elective course, it was evaluated in detail at the end. General factors, such as supervision, and the different training mediums were evaluated. Furthermore, the cognitive training was evaluated on the perceived expedience of cognitive training, the extent of subjective learning effect, and the level of concentration during training. A digital graphic scale ranging from 1 to 100 was provided for answering. The responses were evaluated via Pearson correlation analysis. Group differences were calculated using the Mann–Whitney 