Author explained what the quotient in IQ stands for, whether the IQ changes, how to relate IQ to other factors, and its future in measuring human intelligence and personality development. (RK)

A Monte Carlo technique was employed in order to compare the relative power and robustness of the Bartlett, Cochran, Hartley, and Levene tests for homogeniety of variance. (Editor)

It is proposed that the reliability of criterion-referenced test scores be defined in terms of the consistency of the decision-making process across repeated administrations of the test. (Author/RC)

A generalization of the G index of agreement is presented, allowing for its application in multiple ratings. The generalized coefficient is intended for use in the psychiatric clinic. An illustrative example is provided, using hypothetical data. (Author)

Rigorous comparison of the reliability coefficients of several tests or measurement procedures requires a sampling theory for the coefficients. This paper summarizes the important aspects of the sampling theory for Cronbach's (1951) coefficient alpha--a widely used internal consistency coefficient. This theory enables researchers to test a…

The kappamax reliability index of domain-referenced tests is defined as the upper bound of kappa when all possibile cutoff scores are considered. Computational procedures for kappamax are described, as well as its approximation for long tests, based on Kuder-Richardson formula 21. The sampling error of kappamax, and the effects of test length and…

Use of Tukey's Jackknife in establishing a confidence interval around the population coefficient alpha is explored and the robustness of Feldt's procedure along with ten variants of the Jackknife when the data do not conform to the necessary normality requirements are evaluated. Only two of the variants compared to Feldt's approach. (RC)

Shows that the Harris factors of R have psychometric properties similar to those discussed by Kaiser and Caffrey (1965) and Bentler (1968). Specifically it is shown that the Harris factors of R maximize a lower-bound to the reliability of a composite measure derived by Guttman (1945). (Author/RC)

THIS TEST BATTERY IS DESIGNED TO BE USED AS AN AID IN COUNSELING AND GUIDANCE FOR PUPILS IN THE NINTH AND TENTH GRADES OF ACADEMIC HIGH SCHOOLS IN ISRAEL. AS THE INTENT IS TO MEASURE THE PUPIL'S ABILITY TO DO CRITICAL THINKING IN BROAD AREAS, THE TEST BATTERY MEASURES GENERAL EDUCATIONAL DEVELOPMENT RATHER THAN SPECIFIC ACHIEVEMENT SKILLS IN THE…

A least squares approach to estimating the reliability of a measure consisting of more than three content homogeneous or congeneric parts is proposed. The advantages of this method over a more indirect approach in which certain parts of a measure are combined to use Kristof's or Feldt's coefficients are examined. One hundred four-part tests were…

INVESTIGATION IS CONTINUED INTO VARIOUS EFFECTS OF NON-INDEPENDENT ERROR INTRODUCED INTO MULTIPLE-CHOICE TEST SCORES AS A RESULT OF CHANCE GUESSING SUCCESS. A MODEL IS DEVELOPED IN WHICH THE CONCEPT OF THEORETICAL COMPONENTS OF SCORES IS NOT INTRODUCED AND IN WHICH, THEREFORE, NO ASSUMPTIONS REGARDING ANY RELATIONSHIP BETWEEN SUCH COMPONENTS NEED…