The mean IQ on the Slosson Intelligence Test (SIT) was substantially higher than expected based on the earlier Peabody Picture Vocabulary Test (PPVT) scores. Sampling error and examiner error were excluded as explanations. Results suggest that the PPVT and SIT yield different scores and lack comparability. (Author)

The validity of the fourth edition of the Stanford-Binet (S-B IV) test was studied with 30 linguistically precocious children at ages 20, 24, and 30 months. Validity at 24 months was questionable. Problems in using the test with very young children are discussed. (SLD)

In an attempt to restore the symmetry and balance between the study of person and item variation, this paper presents a novel methodology construct specification equations, which allows one to ascertain from the lawful behavior of items what an instrument is measuring. (Author/PN)

A binary communication format and active interrogation were used to administer the Peabody Picture Vocabulary Test (Revised) to 25 individuals unable to make oral or fine-motor responses resulting from various physical and intellectual disabilities. Results correlated with those obtained using the standard form. Discussion focuses on use with…

Finds the revised Peabody Picture Vocabulary Test an improvement over the original edition. (AEA)

Thirty-six children, aged four-five, completed four vocabulary measures: Peabody Picture Vocabulary Test-Revised, Picture Vocabulary subtest of the Test of Oral Language Development, Expressive One-Word Picture Vocabulary Test, and Receptive One-Word Picture Vocabulary Test. Only moderate correlations were found among these tests, implying that a…

Using data from the same source as that employed in Herrnstein and Murray's book, "The Bell Curve," this study reexamined links between the test scores of mothers and children, paying close attention to what the scores measure and whether these measurements mean the same things for blacks and whites. The study replicated Herrnstein and…