Rater cognition or "think-aloud" studies have historically been used to enhance rater accuracy and consistency in writing and language assessments. As assessments are developed for new, complex constructs from the "Next Generation Science Standards (NGSS)," the present study illustrates the utility of extending…

The Standards for Educational and Psychological Testing indicate that multiple sources of validity evidence should be used to support the interpretation of test scores. In the past decade, examinee response processes, as a source of validity evidence, have received increased attention. However, there have been relatively few methodological studies…