The general use of the Spearman-Brown formula for calculating the reliability of parallel tests with different lengths is reviewed. The importance of the assumption that the component tests be parallel is noted and the property that parallel tests must be non-negatively correlated is derived. (Author)

The proportion of agreement, G, and kappa indexes are shown to differ in how they correct for chance agreements between two observers. On the basis of the findings, it is suggested that no single agreement index is appropriate for all sets of data. (Author/BW)

Levine's equations for random groups and unequally reliable tests can be used to equate two tests through performance on an anchor test. Levine's assumption of a parallelism requirement is not necessary; it is sufficient to assume only that the tests are congeneric, an assumption implicit in linear test equating. (SLD)

Maximized correlation as an internal reliability estimate for tests with few items was investigated. An actual sampling distribution of maximum correlation--"r" max--was empirically derived from 100 samples of 50 cases each from Rorschach test data and compared with those of alpha and an odd/even split, using 2,020 Rorschach protocols.…

Research on the semantic differential technique has provided evidence for variance in Osgood's formulation of dimensions of connotative meaning. Retest data based on Piotrowski's original sample is reported. Results indicate support for stability and consistency of the Evaluation dimension. Moderate consistency was found in scales comprising the…

Unreliable profiles impose the difficulty that ordinal and interval relations among the individual's scores become uncertain or unstable. A profile reliability coefficient is derived to estimate the relative expected extent of this ordinal and interval "inversion" for any profile of K measures. (Author/DWH)

A paradoxical phenomenon of decreases in reliability as the number of elements averaged over increases is shown to be possible in multifacet reliability procedures (intraclass correlations or generalizability coefficients). Conditions governing this phenomenon are presented along with implications and cautions. (Author)

Samples in research on individual and group differences may be selected based on whole scores which differ from the population mean. Children are diagnosed in clinical practice with a whole score. These procedures produce regression to the population mean which can affect accuracy and adequacy of part score interpretations. (Author/DWH)

A derivation of a formula for the stability coefficient is presented and discussed in terms of test reliability over time. (PR)

Rajaratnam, Cronbach and Gleser's generalizability formula for stratified-parallel tests and Raju's coefficient beta are generalized to estimate the reliability of a composite of criterion-referenced tests, where the parts have different cutting scores. (Author/GK)

Four hypotheses regarding stability of response process and response in personality testing are tested and supported. (RC)

The Nonsexist Personal Attribute Inventory for Children (NPAIC) was administered along with the Piers-Harris scale to children in fifth through eighth grade. A correlation of .49 was found between the two scales. The NPAIC was found to be a reliable, valid self-concept scale for females and males. (Author/GK)

The effects of repeaters (testees included in both administrations of two forms of a test) on the test equating process are examined. It is shown that repeaters do effect test equating and tend to lower the cutoff point for passing the test. (JKS)

Past practice of operationalizing the concept of fakeability of psychological tests is reviewed. The strengths and weaknesses of these indices are discussed in the light of a proposed new definition of fakeability based upon Naylor's model of measurement accuracy. (Author/JKS)

The Learning Style Inventory (LSI) and the newly revised Learning Style Inventory (LSI II) were examined for internal consistency, test-retest reliability, and stability of the four classifications resulting from their scores. Internal consistency was improved in LSI II, but problems with low test-retest indices and classifications stability…