Proposes that there be more direct carryover of what has been learned about measurement in research to measurement in teaching (specifically, grading). Major sources of error in the measurement process are identified, and seven tested social science research strategies are presented. Suggests that to the extent measurement is varied and repeated,…

Three major national longitudinal studies have been conducted in Great Britain, each based on a week's births in, respectively, 1946, 1958, and 1970. This paper focuses on the implications for educators of the findings of the 1958 study, which examined the development, over 23 years, of approximately 5,000 children born in Britain in one week of…