RATER BIAS:
A general term to describe any biases attributable to Raters in a scientific study1,2. A Rater is a person who is responsible for scoring patient responses on health measurement scales, or scoring other clinical measurements for a research study. The measurements between and across multiple raters are often compared and assessed for reliability and validity (e.g. in studies of intra, and inter rater reliability), and Rater Bias may be described.
The term Rater Bias is nonspecific, and may refer to any number of biases in measurement attributable to people; such as Halo Bias, Observer Bias, Collection Method Related Bias, or Fatigue Bias among others. Also see: Halo Bias, Observer Bias, Collection Method Related Bias, and Fatigue Bias.
References:
1. Aubin AS, St-Onge C, Renaud JS. Detecting rater bias using a person-fit statistic: a Monte Carlo simulation study. Perspect Med Educ. 2018;7(2):83-92. (Link to Reference)
2. Kim C, Lin X, Nelson KP. Measuring rater bias in diagnostic tests with ordinal ratings. Stat Med. 2021;40(17):4014-33. (Link to Reference)