TY - JOUR T1 - Research Methods to Avoid Bias in Categorical Ratings of Brightness JO - LEUKOS PY - 2013/09/16 AU - Fotios SA AU - Houser KW ED - DO - DOI: 10.1582/LEUKOS.2008.05.03.002 VL - 5 IS - 3 SP - 167 EP - 181 Y2 - 2025/12/17 ER -