The use of factor analysis in examining the dimensionality of language tests is questioned and found to be problematic because it has a number of weak points which make it possible to manipulate results. Some of these weaknesses occur in the examinee selection sample, test selection, and the methods of extraction and rotation chosen. The use of…

A study was carried on to analyze a data set in order to determine whether evidence can be found to support or refute the unitary factor hypothesis of language proficiency, which asserts that there is a single language dimension or factor underlying different language tests. The subjects were 50 advanced adult learners of English as a second…

A statistical model is presented for analyzing the results of group conversation tests in English, developed in a Finnish university study from 1977 to 1981. The model is illustrated with the findings from the study. In this study, estimates of percentile curves for the number of errors are of greater interest than the mean regression line. It was…

Data from a national survey of students and teachers working within Norway's system of mixed-ability instruction in the elementary and early secondary schools suggest that, after ten years of implementation, the teaching and testing system is workable and that some aspects work relatively well. Instruction in English as a second language in a…