This study, involving 64 students with specific learning disabilities, found positive correlations between the Wechsler Intelligence Scale for Children-III (WISC-III) and the Arithmetic subtest of the Wide Range Achievement Test-Revised (WRAT-R), the KeyMath-Revised, and the Peabody Picture Vocabulary Test-Revised, but not between the WISC-III and…

The relationship between recognition and recall, especially the orderly recognition-failure function relating recognition and the recognizability of recallable words, was investigated using a composite holographic associative recall-recognition memory model (CHARM) in 10 series of computer simulations. Support for the model is demonstrated. (SLD)

This study of 47 families of autistic probands found that whole blood serotonin was positively correlated between autistic children and their mothers, fathers, and siblings, but plasma norepinephrine levels were not. (Author/JDD)

A correlation between intelligence level (IQ) and nerve conduction velocity (NCV) was demonstrated for 147 undergraduate students in the eastern San Francisco (California) Bay area. Recent studies of retarded subjects support the findings, explainable by positive correlations among NCV, speed of information processing, and IQ. (Author/SLD)

Event-related potentials (ERPs) and reaction time (RT) were recorded concurrently during performance of 6 simple cognitive tasks by 30 right-handed women who varied in mental ability. Results suggest that ERPs and RT may assess stimulus evaluation time and the response-production time components of cognitive information processing. (Author/SLD)

The methodology of many studies that have identified specific genetic loci for disorders associated with mental retardation is criticized as failing to demonstrate an association between the behavior phenotype and the genetic marker. A more appropriate methodology using a multitrait-multimethod approach is suggested. (Author/JDD)

Two structural laws for intelligence tests are discussed: one law concerns the sign of correlation coefficients and gives conditions under which all correlations between test items will be positive; and one law concerns the relative sizes of the correlation coefficients between intelligence items. A cylindrical structure extends these laws. (SLD)

Discusses the importance of establishing the reliability of independent observers' judgments. Argues that the percentage of agreement measure is more difficult to interpret than are correlation measures. Recommends that the field of literacy research adopt correlation as the standard method for estimating the reliability of observers' judgments.…

Distinguishes between multiple correlation and multiple regression analysis. Illustrates suggested information reporting methods and reviews the use of regression methods when dealing with problems of missing data. (SK)

Used prospective data to examine the relationship between the family environment and child and adolescent achievement and to determine genetic and environmental contributions to this relationship. Data from 2,108 sibling full- and half-sibling pairs from the National Longitudinal Survey of Youth suggest that genetic factors explain about…

Critiques H. W. Marsh and K.-T. Hau's (1996) assertion that parsimony is not always desirable when assessing model-fit on a particular counterexample drawn from Marsh's previous research. This counterexample is neither general nor valid enough to support such a thesis and it signals an oversight of extant, stochastic models justifying correlated…

In response to H. W. Marsh and K.-T. Hau's (1996) article on the potential for inferential errors when parsimony is rewarded in the evaluation of overall fit of structural equation models, a design-sensitive adjustment to the standard parsimony ratio is proposed. This ratio renders a more reasonable upper bound than does the standard parsimony…

Presents two experiments involving 16 and 14 college students that were designed to enhance the sensitivity of reaction time as an information-processing correlate of general ability. Data from both are interpreted in terms of mental efficiency theories of intelligence. (SLD)

A larger canonical correlation of Self-Directed Search scores with those from the Ball Aptitude Battery for 198 high school students was found compared to results from a 1977 study being replicated. Only modest overlap between the Self Directed Search and the Ball Aptitude Battery was found. (SK)

Examines if the delinquency syndrome argument has validity in a sample of religious youths, by testing whether the same basic theoretical models explained crime and drug use. Results find that all theoretical factors investigated are correlated significantly with both crime and use of drugs; however, some of these factors are differentially…