In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...

Journal for Research in Mathematics Education. Monograph, Vol. 15, Psychometric Methods in Mathematics Education: Opportunities, Challenges, and Interdisciplinary Collaborations (2016), pp. 155-174 ...

1. What is the difference between the reliability and validity of a measurement? The validity of a measure is the extent to which differences in scores on the instrument reflect true differences among ...