The use of a quasi-equiprobability model in the measurement of observer agreement involving dichotomous coding categories is described. A measure of agreement is presented which gives the probability of agreement under the assumption that observation pairs reflecting disagreement will be equally probable. (Author/JKS)

Kaiser and Michael reported a formula for factor scores giving an internal consistency reliability and its square root, the domain validity. Using this formula is inappropriate if variables are included which have trival weights rather than salient weights for the factor for which the score is being computed. (Author/RL)

The study reported differences in agreement among four experienced listeners who analyzed the articulation skills of 97 four- and five-year-old children. Place and manner of articulation revealed differences of agreement, whereas voicing and syllabic function contributed little to agreement or disagreement. (Author)

Research indicates that three samples may not give a good indication of a workbook's narrative readability level. (MKM)

Investigating use of maximum v averaged scores in physical and motor multiple-trial tests as indicators of performance, this article concludes use of mean scores is still most appropriate in terms of scientific estimations of true performance given multiple fallible empirical measures. (JC)

The present study was designed to determine if maze tests constructed over the same passages by different teachers were comparable. In addition, maze test parallel form reliability was investigated. (HOD)

The one-year stabilities of several well-standardized intellectual, educational, and personality tests were evaluated for 15 children of Mexican American migrant workers. Most of the stability coefficients observed for these tests were statistically significant and similar to those reported for their normative samples. However, the stability…

Use of the same term "split-half" for division of an n-item test into two subtests containing equal (Cronbach), and possibly unequal (Guttman), numbers of items sometimes leads to a misunderstanding about the relation between Guttman's maximum split-half bound and Cronbach's coefficient alpha. This distinction is clarified. (Author/JKS)

Two doctoral level school psychologists independently scored 50 McCarthy drawing booklets. Children producing the drawings ranged from 5-11. Interscorer reliability for Draw-A-Design was .93 and for Draw-A-Child was .96. No significant differences occurred in the mean score for either test across scores. (Author)

An introduction is provided to the use of confirmatory factor analysis to test measurement invariance and stability in longitudinal research. The approach is illustrated through examples representing one or two constructs in one to three measurement waves. Basic issues in establishing measurement invariance are discussed. (SLD)

Studies of the reliability and validity of scores on the Religious Orientation Scale (G. Allport and J. Ross, 1967) were reviewed with respect to social desirability. Meta analysis shows that one scale correlates with social desirability, but another does not, suggesting that partialing out this variance is not recommended. (SLD)

Developed and validated an instrument designed to measure the perceived measurability and importance of the National Athletic Trainers' Association Athletic Training Educational Competencies. Data from 931 athletic trainers and sport medicine physicians support 6 constructs, each of which demonstrates high reliability. (SLD)

Conducted a reliability generalization study of five of the most prominent adult attachment style measures. Results from this investigation of 154 previously published stories indicate that the average score reliabilities across studied varied considerably across instruments and subscales. (SLD)

Conducted a reliability generalization study of Kolb's Learning Style Inventory (LSI; D. Kolb, 1976). Results for 34 studies indicate that internal consistency and test-retest reliabilities for LSI scores fluctuate considerably and contribute to deleterious cumulative measurement error. (SLD)

Discusses reliability issues in light of recent studies and debates focused on psychometrics versus datametrics terminology and reliabilities generalization. Discusses the way multiple perspectives on score reliability may affect research practice, editorial policies, and reliability generalization across studies. (SLD)