PubMed Health⌕ Search

Biomedical subjects

J P Boudreau

Publications and source records attributed to J P Boudreau.

5 recordsLinked to original sources

Motor development and the mind: the potential role of motor abilities as a determinant of aspects of perceptual development.

Recent advances in the science of human movement have enabled developmental psychologists to discover unique patterns of organization and control in infant motor behavior and development, provoking a resurgence of interest in this topic. In this article, we emphasize the role that motor development may play in determining developmental sequences or "timetables" in other domains. Specifically, we argue that particular motor achievements may be integral to developments in the domains of haptic perception and depth perception. In both cases, there is a high degree of fit between the developmental sequence in which certain perceptual sensitivities unfold and the ages at which the corresponding motor abilities onset. The discussions may provide new contexts in which to consider the developments of haptic perception and depth perception. The general purpose, however, is to highlight the wide-ranging influence of motor development during infancy.

Brain↗

Delayed auditory feedback and the speech of stuttering and non-stuttering children.

25 male stutterers and 25 male non-stutterers matched by age and speaking task, read or recited under normal and 113-, 226-, 306-, 413-, 520-msec. delayed auditory feedback conditions. Changes in speaking rate and disfluency count from normal to each delayed auditory feedback condition were calculated as indicators of reaction to delayed auditory feedback. Using an analysis of variance of difference scores for speaking rate, no significant differences were found between stutterers and non-stutterers or among the delays. An analysis of variance of disfluency difference scores showed no differences between stutterers and non-stutterers. Significant differences in disfluency reaction among delay times were found.

Adolescent↗

Speech disfluencies and delayed auditory feedback reactions of stuttering and non-stuttering children.

25 male stutterers and 25 male non-stutterers matched by age and speaking task, read or recited under conditions of normal and 113-, 226-, 306-, 413-, and 520-msec. delayed auditory feedback. Disfluency counts were correlated with delayed auditory feedback reactions which were changes in disfluencies under delay conditions. Pearson product-moment correlations were negative and significant for the combined group of stutterers and non-stutterers under all delays used. Correlations for stutterers were negative and significant for 113, 226, 306, and 413 msec. delay. For the total group of non-stutterers, all correlations were negative and significant. Correlations for age groups within the stuttering and non-stuttering groups were also presented.

Acoustic Stimulation↗

Age, sex, and delay time as factors affecting reaction to delayed auditory feedback.

Five groups of 10 males and 10 females each, aged 5, 7, 9, 11, and 13 yr., recited a nursery rhyme under normal delay and 113, 226, 306-m 403-, and 520-msec, delayed auditory-feedback conditions. Speaking rate and disfluency count changes from normal delay to each delayed auditory feedback condition were calculated as indicators of reaction to delayed auditory feedback. Analyses of variance and post hoc comparisons indicated that 5-yr.-olds reacted with greater change in rate at 520-msec. delayed auditory feedback than did older subjects. Five- and 7-yr.-olds were more disfluent at 413-and 520-msec. delayed auditory feedback than were older subjects. Sex differences were found in the 7-, 11-, and 13-yr.-old groups, using speaking rate as a measure of delayed auditory-feedback reaction. No significant sex differences were noted when disfluencies were used as indicators of delayed auditory-feedback reaction.

Adolescent↗