Irritability levels and activity reactivity to aversive tactile stimuli were compared for 144 full-term neonates and 191 preterm infants. Irritability ratings increased across the five trials both during and post stimulation for full-term females and males and for preterm females, but not for preterm males. Activity ratings decreased across trials…

Results support the inference that symbolic mediation is a measurably time-consuming process and that temporal factors are involved in the ontogenetic transition from single-link to symbolically mediated behavior. (Author/CB)

The sentence-picture comparison task requires Ss to decide, as quickly as possible, whether a sentence correctly describes a feature of a picture. (Author)

Several measures of the speed of information processing were related to ability factors derived from the Cattell-Horn theory of fluid and crystallized intelligence. Correlations among the ability measures, among the information processing measures, and between the two domains were analyzed using confirmatory factor analysis. (Author/PN)

Compared the Matching Familiar Figures Test performances of 53 children in grades five and six, identified as being depressed, to performances of 53 nondepressed children. The depressed group had longer latencies, made more errors, and was less efficient, even when intellectual differences were taken into account. (Author)

The effects of semantic (S), orthographic (O), and unrelated (U) verbal stimuli on word retrieval were examined. S stimuli inhibited locating items within categories, whereas U stimuli inhibited locating the appropriate category. The discrepancy between the present outcome and the previous finding of S prime retrieval facilitation is discussed.…

Mirror-image animal and nonanimal words of three to six letters were presented to subjects in a reaction time categorization task. A significant interaction of Word Length X Block was found for words presented over all four blocks. A shift from component to holistic processing was found for the repeated words. (Author/RD)

Schuberth and Eimas (EJ 159 939) reported that context and frequency effects added to determine reaction times in a lexical decision (word v nonword) task. The present reexamination shows that context and frequency do interact, with semantic context facilitating the processing of low-frequency words more than high-frequency words. (Author/CP)

Points out that in languages in which nouns have a grammatical gender, word recognition can be estimated by gender-decision response times. Notes that although gender decision has yet to be used extensively, it has proved sensitive to several factors affecting lexical access and that this task can be used with linguistic information from other…

The effects of controlling for individual differences in simple reaction time (RT) on the correlations of choice RT and discrimination RT with intelligence quotient were studied for 213 male college students. Simple RT was controlled by subtraction, partial correlation, and multiple correlation. (SLD)

Two experiments were conducted with graduate students to test hypotheses regarding the effectiveness of diagrams in which concepts were shown spatially. Response latencies were compared for problems applying kinship rules to information presented in family trees and in lists of statements, and the use of rules to compute responses was examined.…

Presents the results of a study designed to test ability to discriminate sound intensity modulations. Examines time required for making correct discriminations of stimuli that increased, decreased, or remained the same in intensity. Concludes that both musicians and nonmusicians perceive intensity decreases more easily than increases. (DK)

Sixty Korean speakers of English who had lived in the United States were tested for their ability to judge the grammaticality of English sentences in 12 grammatical categories in a reaction-time task. Findings suggest that a sensitive period exists in second-language (L2) acquisition as evidenced by faster performance by early-learner L2 groups.…

Children referred for evaluation of learning impairment (n=100) and 243 typical children were evaluated on a visual filtering task. With each additional processing demand, response times increased disproportionately for children with learning impairments. Overall response time predicted academic skills and cognitive ability, but was more strongly…

A study of the semantic processing abilities of undergraduates with learning disabilities (LD) (n=11) and controls (n=11) found no significant differences on the Test of Adolescent/Adult Word Finding; however, students with learning disabilities demonstrated a significantly greater number of delayed responses. Students with LD also showed delays…