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Biomedical subjects

R Lord

Publications and source records attributed to R Lord.

At least 109 records · Page 6Linked to original sources
PubMed1988

Patterns of rotary pursuit performance in clumsy and normal children.

The present study is concerned with the development of motor programs in clumsy children. In order to investigate this, the performance of clumsy and normal children on a rotary pursuit tracking task was compared. The performance of the clumsy group was inferior to that of the control group in terms of time on target, but the pattern of performance across successive trials was broadly similar for the two groups, suggesting a progression from control by visual feedback to control by motor programs. It was concluded that the performance of clumsy children on the rotary pursuit task may be limited more by impaired visual feedback control than by an impairment in the ability to develop motor programs.

Attention↗
PubMed1987

Perceptual judgments of normal and clumsy children.

The performance of normal and clumsy children was compared on a range of measures of visuo-spatial perception. It was found that the clumsy children performed more poorly than the normal children on size-constancy judgements and area, slope, spatial position and linear length discriminations. The differences could not be explained by variations in visual acuity. These results are discussed in terms of information-processing models of motor control, and their possible implications for the assessment and treatment of clumsy children are briefly outlined.

Child↗
PubMed1987

Kinaesthetic sensitivity of normal and clumsy children.

Laszlo and Bairstow (1985a) stated that their Kinaesthetic Sensitivity Test (KST) was designed to be useful in researching the relationship between kinaesthesis and motor performance, and as a diagnostic tool to identify children with poor kinaesthetic function. This study examined the claim that many clumsy children perform poorly on the KST. It was found that the test failed to distinguish between the performances of clumsy children and those of an age-matched control group. Because of its psychometric shortcomings, the KST is unable to fulfil the claims of Laszlo and Bairstow, either as a research or a clinical tool.

Child↗
PubMed1982

A ten-year comparison of fathers' and mothers' reactions toward their hospitalized adolescents.

Difficulties confronting parents of hospitalized adolescents are reviewed. Fathers' and mothers' reactions to their child's illness and hospitalization are compared to those of 10 years ago. Differences in attitudes and behavior over the decade are believed to be more attributable to the cultural climate than to the variability in the sample. The more pronounced changes were found among fathers, who currently showed less hostility toward the hospital and patient and a greater ability to express a range of feelings. Compared to 10 years ago, the fathers were more motivated to visit by concern than by duty and evidenced greater ease on the ward and more involvement with their children. Paternal and maternal roles appeared to overlap far more than previously, to the benefit to both.

Adolescent↗
PubMed1977

Polistes wasp hypersensitivity: diagnosis by venom-induced release of histamine in vitro.

Polistes wasps cause a majority of Hymenoptera-induced anaphylactic reactions in Texas. Using the in vitro release of histamine from basophils of patients allergic to Polistes stings, we have studied the cross-reactivity of venoms from three species of Polistes wasps as well as the cross-reactivity among Polistes, honeybee, and Vespula maculifrons (yellow jacket) venoms. Venom collected by an extrusion technique from Pollistes exclamans, Pollistes apachus, and Pollistes carolina caused release of histamine in seven Polistes-sensitive individuals. The dose-response curves from all three Polistes species were quite similar, suggesting extensive cross-reactivity among these species. None of these patients showed significant release of histamine from leukocytes exposed to yellow jacket or honeybee venom. We conclude that a source of Polistes venom is available for further study and possibly for therapy. It appears that any of three local common species of Polistes wasps could be used. Our studies confirmed earlier reports that Hymenoptera sensitivity if often genus-specific.

Adolescent↗