This is one of three volumes presenting the procedures and results of a research effort investigating the effects upon student outcomes of training teachers to implement individual study and self-directed study in their classrooms. In this volume correlation matrices drawn from tests of student variables and achievement are presented. Item…

This book is designated for an audience of the practitioners of education, especially those located in elementary schools. It is designed to investigate and explain research methods, terms, and concepts so that the reader can narrow down the many ways things are known or said to be known. Included in this book are chapters on the research process…

This study was concerned with determining the validity of the Slosson Intelligence Test (SIT) using the Stanford-Binet Intelligence Scale (S-B), Form L-M as the validity criterion. The sample consisted of 724 students enrolled in 10 public school systems in northeastern Massachusetts. Using the Pearson-Product Moment formula a coefficient of…

The statistical methods presented in this workbook focus on the display of central tendency, statistical tests, and correlation. Chapters 2, 3, and 4 consist of worksheets, each of which provides step-by-step instructions for calculating and interpreting a particular statistical method. The introduction to each worksheet explains how and when to…

A DISCUSSION WAS PRESENTED ON THE PROCEDURES OF EQUATING DIVERSE ABILITY SCORES OBTAINED BY DIFFERENT SCALED MEASURES. THE AUTHOR INDICATED THE NECESSITY OF EQUATING SUCH SCORES WHEN ABILITY IS TO BE TREATED AS A SINGLE INDEPENDENT VARIABLE IN SIGNIFICANCE TESTS AND IN COMPARATIVE ANALYSES OF DICHOTOMIZED GROUPS. A NEW RATIONALE FOR EQUATING…

A diagnostic test in English as a second language should be a series of miniature tests on specific problems. Subscores in each area should be considered rather than a total score. The results should be used to probe mastery in an area rather than provide the means for comparing one student against another. The statistical reliability of the…

An experimental study examined the possibility that proximity error could bias results from semantic differential questionnaires. Proximity error occurs when, due to the ordering, or polarity, of the differential scales, one answer on the semantic differential results in another answer to a subsequent question being substantially changed from what…

Goodness of fit of raw test score data were compared, using two latent trait models: the Rasch model and the Birnbaum three-parameter logistic model. Data were taken from various achievement tests and the Scholastic Aptitude Test (Verbal). A minimum sample size of 1,000 was required, and the minimum test length was 40 items. Results indicated that…

The Statewide Assessment Program of the Florida State Department of Education is responsible for measuring student achievement and disseminating the assessment results. One dimension of this effort has been the development of predicted or adjusted school scores. These scores are based on several factors which are related to achievement. Among…