<p>This manuscript addresses raters' biases when conducting employee evaluations. The authors present an original approach to assess how the characteristics of the instruments commonly used to evaluate performance affect ratings. These characteristics were: (1) The moment in which an employee shows poor performance –either task performance or contextual performance– during the evaluation period (in the beginning, the middle, or the end); (2) the type of instruments to conduct the evaluation –instruments that contain global items vs. instruments that have specific items; (3) The order in which the different types of instruments are used (global items first, specific items second vs. specific items first, global items second). In order to determine if the characteristics of the instruments interfere with ratings, the authors asked a group of participants to rate a fake employee on their contextual performance and task performance. Participants could receive one of eight versions of the assessment that contained the appropriate experimental manipulations to account for the effects to be studied (moment of poor performance, type, and order). The accuracy of ratings was calculated by comparing the participants' data to the ratings of professional raters.</p>
<p>The authors do not specify the sampling technique, nor did a power analysis to estimate the number of participants. The data collection and data analyses are appropriate for the study, and the data support the findings.</p>
<p>The manuscript has a potential practical use to prevent raters' bias while conducting an employee performance evaluation.<br>More than 60% of the references were ten years or older. Authors should update their review.</p>
<p>The authors could improve manuscript clarity. The abstract was particularly difficult to read since it lacks the context in which this study took place. I would suggest the authors revise how they are framing their constructs and probably use parentheses dashes, and lists to make the manuscript flow a little better. They should try to avoid using "and/or" statements.</p>