When an engineering researcher changes from his work on things to research on people, he faces an array of new ethical questions, and a new view of scientific objectivity must be developed for the study of man and society. (IR)

Considers the study of similarities and differences in factor structures between different groups. (AG)

This paper describes two statistics (chi square and Kendall's S) which may be used to test hypotheses about the association between two variables when observations are cross-classified in a contingency table. (CK)

Examined were the mental processes by which elementary school students work simple multiplication exercises. Ten process models were fit to data obtained in the course of a CAI program in elementary arithmetic. The processes used by students in grade three were compared with those used by students in grade six. (CT)

The methods used by Humphreys and Dachler to estimate effects in their analysis of Project TALENT data to test Jensen's Theory of Intelligence are shown to produce biased estimates. (Author/TA)

Before judging a student's diagram correct or incorrect, the mental associations made by the student between his diagram and the problem should be known. This is a follow-up to the author's article in the November 1970, Arithmetic Teacher." (RS)

Develops two-dimensional descriptions of degenerate transformations using elementary matrix algebra. (RS)

Describes a program in which students develop a mathematical model, based on simple feedback loops, used for predicting consequences of varying ecological parameters. Presentation early in undergraduate course emphasizes use of statistics in ecology. (AL)