Same vs. different assessors across candidates. Whether each of the candidates within a study was assessed by the same assessor or a variety of assessors were used to assess the candi- dates within a study was also coded. In secondary research de signs, this was determined based on the original assessors who had direct contact with candidates. Interrater agreement on this van- able was fairly low (K 47: 68% agreement). Many of the disagreements were a side-effect of problems with classifying studies into assessor versus secondary source designs and were