The reliability of Oltman's Portable Rod and Frame Test (PRFT) was assessed using 60 first-, third-, and fifth-grade children. Various reliability estimates ranged from .90 to .97. Age and sex differences were also examined. (Author/BH)

Lists six problems related to descriptive data and to factor analysis performed in a previous research study reported in this journal. Includes the authors' response to the suggested weaknesses of their study. (JN)

The construct of spatial ability is discussed and it is suggested that some widely used and cited tests that are called spatial ability tests may not be valid measures of that ability. Instead, their items may be solved using mental processes that are clearly analytical and not spatial in nature. Four studies involving the analysis of subjects'…

Claims that standards-based tests neither measure skills and knowledge accurately nor help educators do a better instructional job. The article offers suggestions in four areas to make the tests contribute to improved instruction: measurement of content standards; descriptions of standards; standard-by-standard reporting; and locally administered…

The basic measurement topics of reliability, validity, and norms as they apply to the major norm-referenced cognitive and affective instruments in economics education are discussed to provide researchers with a framework for judging technical quality. Because the topic of measurement is neglected or given improper treatment in much research work…