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M Toms

Publications and source records attributed to M Toms.

4 recordsLinked to original sources

Mood and cognition in pregnant workers.

Thirty-eight working women, in their late second trimester or early third trimester of pregnancy, volunteered to fill out the Cognitive Failures Questionnaire and the UWIST Mood Adjective Checklist. In addition they provided information on the number of children they already had, the nature of their employment and their education level. The latter information was used to select a match for each pregnant worker from a larger sample of non-pregnant female workers. The results revealed no differences in the level of cognitive failures between the two groups. However, CFQ score was a better predictor of mood in the pregnant subjects, suggesting mood changes may be more closely related to perceived cognitive competency during pregnancy. The implications of this are discussed. With respect to mood sub-scales, non-pregnant workers scored higher on Energetic Arousal than pregnant workers. There were no differences on other mood sub-scales. It is argued that the cognitive efficiency of workers is not compromised by pregnancy but steps should be taken to ensure that work load is adjusted to take account of the self-reported reduced arousal that may arise.

Adult↗

Characteristics of visual interference with visuospatial working memory.

Recent discussions of visuospatial working memory have suggested that this subsystem may incorporate a visual buffer which holds visuospatial information relatively passively. Empirical investigations of visual interference with information held within a visuospatial subsystem have yielded somewhat equivocal results. Nonetheless, evidence from Logie (1986) has indicated that visuospatial processing can be disrupted by passive exposure to irrelevant visual material in a manner analogous to the disruption of serial verbal recall by exposure to irrelevant speech. This paper reports two experiments which explore whether such irrelevant visual input is disruptive to storage of imaginal information in a primarily spatial task--the Brooks spatial matrix task. Experiment 1 shows that exposure to irrelevant visual input during encoding selectively disrupts performance on a spatial, but not a verbal, version of the task. The extent of such disruption is shown to be independent of the visual complexity of the material, its similarity to the to-be-remembered information, or a change in state, with a static white square pattern yielding equivalent disruption to that produced by changing matrix patterns. The second experiment indicates that this pattern of effects is robust, and that such disruption is evident at an equivalent level when the visual material is present only during a 20-second retention interval. These results are interpreted as evidence of obligatory access of external visual material to a passive visual buffer. Implications for the nature of a visuospatial subsystem in working memory are discussed.

Adult↗

In utero exposure to diagnostic ultrasound: a 6-year follow-up.

A 6-year follow-up study of height and weight was conducted between 1975 and 1983 in a total of 149 sibling pairs of the same sex, one of whom had been exposed to diagnostic ultrasound in utero. The data were analyzed for the entire sample group, as well as for subgroups defined by sex, gestational age at delivery, birth order, and gestational age at time of first exposure to ultrasound. No statistically significant differences of head circumference at birth or of height and weight between birth and 6 years of age were found between ultrasound-exposed and unexposed siblings. In our sample population, exposure of fetuses to ultrasound did not significantly affect growth in childhood up to 6 years of age.

Adolescent↗