Phillips, G. W., Danielson, L., & Wright, L. (2009). Psychometric advances in alternate assessments . American Institutes for Research. http://assessment.air.org/Papers/Psychometric%20Advances%20in%20Alternate%20Assessments_phillips.pdf
Phillips, G. W., Danielson, L., & Wright, L. (2009). Psychometric advances in alternate assessments. American Institutes for Research. http://assessment.air.org/Papers/Psychometric%20Advances%20in%20Alternate%20Assessments_phillips.pdf
URL
http://assessment.air.org/Papers/Psychometric%20Advances%20in%20Alternate%20Assessments_phillips.pdf