Stanford Center on Adolescence

His current research is in the areas of social measurement and evaluation methods, psychometrics, and related policy and practice issues. His most recent measurement research involves working closely with teachers and scientists in the development of performance assessments in science education, and their evaluation along psychometric, cost, classroom use and social impact liens. His most recent evaluation work has focused on the quality and outcomes of staff development to enhance elementary and middle school teachers' understanding, use, and selection of science performance assessments. His recent psychometric work includes a Sage monograph with Professor Noreen Webb, Generalizability Theory: A Primer, and research on the dependability and context representativeness of performance assessments used in education and work. His policy research includes two recent monographs on alternative designs for educational indicator systems for monitoring the health of the nation's mathematics and science education.