In this paper, we formulate a flexible density function from the selection mechanism viewpoint (see, for example, Bayarri and DeGroot (1992) and Arellano-Valle et al. (2006)) which possesses nice biological and physical interpretations. The new density function contains as special cases many...

"Based on analysis of reading performance data from 475 third-graders in Peru, this study makes recommendations on improving reading tests, choice of reading standards, and how to present the results at the school and individual levels. The paper reviews the literature on using reading skills...

"Based on analysis of reading performance data from 475 third-graders in Peru, this study makes recommendations on improving reading tests, choice of reading standards, and how to present the results at the school and individual levels. The paper reviews the literature on using reading skills...

Based on analysis of reading performance data from 475 third-graders in Peru, this study makes recommendations on improving reading tests, choice of reading standards, and how to present the results at the school and individual levels. The paper reviews the literature on using reading skills...

Based on analysis of reading performance data from 475 third-graders in Peru, this study makes recommendations on improving reading tests, choice of reading standards, and how to present the results at the school and individual levels. The paper reviews the literature on using reading skills...

Based on analysis of reading performance data from 475 third-graders in Peru, this study makes recommendations on improving reading tests, choice of reading standards, and how to present the results at the school and individual levels. The paper reviews the literature on using reading skills...