On the language specificity of basic number processing: transcoding in a language with inversion and its relation to working memory capacity

Transcoding Arabic numbers from and into verbal number words is one of the most basic number processing tasks commonly used to index the verbal representation of numbers. The inversion property, which is an important feature of some number word systems (e.g., German einundzwanzig [one and twenty]), might represent a major difficulty in transcoding and a challenge to current transcoding models. The mastery of inversion, and of transcoding in general, might be related to nonnumerical factors such as working memory resources given that different elements and their sequence need to be memorized and manipulated. In this study, transcoding skills and different working memory components in Austrian (German-speaking) 7-year-olds were assessed. We observed that inversion poses a major problem in transcoding for German-speaking children. In addition, different components of working memory skills were differentially correlated with particular transcoding error types. We discuss how current transcoding models could account for these results and how they might need to be adapted to accommodate inversion properties and their relation to different working memory components.     

Age-related increase in top-down activation of visual features

Previous research suggests that, during visual search and discrimination tasks, older adults place greater emphasis than younger adults on top-down attention. This experiment investigated the relative contribution of target activation and distractor inhibition to this age difference. Younger and older adults performed a singleton discrimination task in which either an E or an R target (colour singleton) was present among distractor letters. Relative to a baseline condition in which the colours of the targets and distractors remained constant, an age-related slowing of performance was evident when either the colour of the target or that of the distractors varied across trials. The age-related slowing was more pronounced in response to target colour variation, suggesting that older adults place relatively greater emphasis on the top-down activation of target features.     

Cognitive style and learning: performance of adaptors and innovators in a novel dynamic task

The influence of cognitive style on performance in a novel dynamic task modelled on the task of controlling air traffic was investigated. It was hypothesized that participants who preferred a more adaptive cognitive style would maintain better rule adherence and safe distances between aircraft in a low‐fidelity air traffic control task than those who preferred a more innovative style. Problems were presented to participants using computer‐based scenarios in screening, practice, and experimental trials. Performance was measured by the number of times the participant violated two types of scenario rules. Screening, practice, and experimental performance were analysed separately. Cognitive style had a significant effect on performance only during experimental trials. Performance of individuals who preferred a more adaptive style improved across experimental trials while those preferring a more innovative style did not. Results suggest that the more innovative participants, although perhaps having some initial advantage, may not be able to sustain performance in this type of task. Published in 2001 by John Wiley & Sons, Ltd.     

Weather as Ecological Events

Gibson’s (1979 Gibson, J. J. (1979/1986). The ecological approach to visual perception. New York: Psychology Press. (Original work published 1979) [Google Scholar]/1986) definition of ecological events suggests that they are different types of change. Weather events exemplify all three varieties that Gibson outlined and can: (1) change the layout of surfaces, (2) change the color or texture of surfaces, and (3) change surface existence. Wind can bring temporary and enduring changes at the ground surface. Clouds can affect visual experiences on the ground through the amount and type of sunlight that is available. Precipitation in the form of rain, ice, and snow can create, disrupt, deform, or destroy surfaces at or on the ground. In this way, weather can change both the optical characteristics of surfaces (e. g., texture, reflectivity, transparency) as well as the affordances of the surfaces (e.g., wetting of surfaces reduces contact friction; high winds change the ease of passing through the medium of air, etc.). We present a taxonomy of weather events based on Gibson’s (1979 Gibson, J. J. (1979/1986). The ecological approach to visual perception. New York: Psychology Press. (Original work published 1979) [Google Scholar]/1986 Gibson, J. J. (1979/1986). The ecological approach to visual perception. New York: Psychology Press. (Original work published 1979) [Google Scholar]) classification of terrestrial events and provide some suggestions for future research.     

Infant crying: Acoustics,perception and communication

This paper first reviews briefly the literature on the acoustics of infant cry sounds and then presents two empirical studies on the perception of cry and noncry sounds in their social-communicative context. Acoustic analysis of cry sounds has undergone dramatic changes in the last 35 years, including the introduction of more than a hundred different acoustic measures. The study of cry acoustics, however, remains largely focused on neonates who have various medical problems or are at risk for developmental delays. Relatively little is known about how cry sounds and cry perception change developmentally, or about how they compare with noncry sounds. The data presented here support the notion that both auditory and visual information are important in caregivers' interpretations of infant sounds in naturalistic contexts. When only auditory information is available (Study 1), cry sounds become generally more recognizable from 3 to 12 months of age; perception of noncry sounds, however, generally does not change over age. When auditory and visual information contradict each other (Study 2), adults tend to perform at chance levels, with a few interesting exceptions. It is suggested that broadening studies of acoustic analysis and perception to include both cry and noncry sounds should increase our understanding of the development of communication in infancy. Finally, we suggest that examining the cry in its developmental context holds great possibility for delineating the factors that underlie adults' responses to crying.     

Interest and liking: Further sequential effects

This study was designed to investigate subjects’ interest and liking preferences for stimuli varying in type and level of familiarity. Subjects were presented with stimulus material in the form of slides, and were asked to view the slides firstly without instruction, and then twice more in order to rate the material for interest and liking. Half the subjects were asked to rate liking before interest, and half rated interest before liking. Results showed that interest ratings were relatively unaffected by the rating sequence, whereas ratings of liking were affected: when ratings of likingpreceded interest ratings, familiar items were preferred to less familiar items, but when ratings of liking were madeafter interest ratings, ratings of liking for less familiar items were preferred to more familiar items. This study forms part of the work of the Leicester Aesthetics Research Group. The work was supported by a grant from the Research Board, University of Leicester.     

Continuing in Mathematics: A Longitudinal Study of the Attitudes of High School Girls

The mathematics attitudes (determined by ratings on the Fennema-Sherman Mathematics Attitudes Scales) of ninth grade girls of similar intellect who subsequently took one to four years of college preparatory math were compared in 1975 and 1978 (n = 84). Math enrollment groups differed significantly on the following scales: Usefulness of Mathematics, Confidence in Learning Mathematics, Teacher (perceived attitude toward the student as a learner of mathematics), and Effectance Motivation in Mathematics as assessed both in Grades 9 and 12, and on the Math as a Male Domain Scale as assessed in Grade 12. From Grade 9 to 12, scores on the Attitude toward Success in Math Scale became significantly more positive.