position effect

position effect, n —bias occurring as a function of the evaluation of stimuli in the first, second, or third, etc. place or position. (2008)

Reprinted, with permission, from ASTM E-253-Standard Terminology Relating to Sensory Evaluation of Materials and Products, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the ASTM standard may be obtained from ASTM International. http://www.astm.org/Standards/E253.htm