In the process of measuring and assessing high-level cognitive skills. interference of rater errors in measurements brings about a constant concern and low objectivity. The main purpose of this study was to investigate the impact of rater training on rater errors in the process of assessing individual performance. The study was conducted with a pretest-posttest control group quasi-exp... https://www.roneverhart.com/Clear-Zig-Zag-Pet-Gate/