Axiomatisation and decidability ofF andP in cyclical time

We present a Hilert style axiomatisation for the set of formulas in the temporal language withF andP which are valid over non-transitive cyclical flows of time.We also give a simpler axiomatisation using the slightly controversial irreflexivity rule and go on to prove the decidability of any temporal logic over cyclical time provided it uses only connectives with first-order tables.     

Trends in school psychology research: 1974–1980

Research articles appearing in five major journals from 1974 to 1980 were categorized in 1 of 16 categories as determined by the major theme of the paper. A chi-square analysis was used to determine whether years differed in relative distribution of observations across the categories. Spearman's rho correlation coefficients were calculated for the rank order of categories between each pair of years, allowing for comparison of the current data with O'Callaghan's (1974) data. Results indicate a significant change in content of articles published over the 7-year period. Articles concerning instrument development and validation account for the relatively largest percentage of total articles published in the 1974–1980 period and have continued to increase since the 1967–1973 period examined by O'Callaghan. Schools and agencies primarily contributing to this research are identified across the 7-year time span. Results are discussed in terms of the professional literature's potential reflection of the role of the school psychologist.     

Women's verbal estimation of a 40-second interval during the first week postpartum: a replication.

In this replication research 49 mothers verbally estimated a 40-sec. interval each day for the first seven days after delivery. Throughout this postpartum period mothers overestimated the time interval. Findings of this study confirmed the results of the original 1987 research.     

Comparison of positive and negative intrusive thoughts and experimental investigation of the differential effects of mood.

The similarity between positive and negative intrusive thoughts is considered for both recently occurring, personally relevant intrusions and for the same intrusions occurring during an experimental task involving self-monitoring. The results indicate that positive and negative intrusions differ in most respects. There was evidence that increasing the frequency of negative thinking is associated with a deterioration of mood. In a subsequent experiment, induced happy and sad moods were shown to differentially affect frequency of intrusions in a fashion consistent with mood congruency effects previously found in experiments on the effect of mood on memory. The implications of these findings for disorders involving the experience of intrusive thoughts such as OCD and depression are discussed.     

A multivariate comparison of the intellectual performance of black and white children matched on four demographic variables

This study investigated the performance of 285 matched pairs of Black and White children from the standardization sample on the 12 subtests and 3 IQ scales of the Wechsler Intelligence Scale for Children—Revised (WISC-R). The children were matched on four demographic variables found in a previous (Reynolds and Gutkin, 1979) study to be significantly related to WISC-R performance: sex, socioeconomic status as determined by the occupation of the head of household, region of residence in the U.S. and urban vs rural residence. Multivariate analysis of variance comparing performance across race on the 15 dependent variables revealed that Whites exceeded Blacks on all tasks except Digit Span—a test of rote memory. Results were also related to the evaluation of the Spearman hypothesis.     

Book reviews

Naturalism in Mathematics PENELOPE MADDY, 1997 Oxford, Oxford University Press viii + 254 pp., $CAN91, ISBN 0–19–823573–9

Bohmian Mechanics and Quantum Theory: an Appraisal JAMES T. CUSHING, ARTHUR FINE & SHELDON GOLDSTEIN (Eds), 1996 Dordrecht, Kluwer viii + 403, pp., US$159.00, ISBN 0–7923–4028–0 (hardback)

Pragmatism as a Principle and Method of Right Thinking: the 1903 Harvard Lectures on Pragmatism CHARLES SANDERS PEIRCE, 1997 Edited and introduced, with a commentary, by PATRICIA ANN TURRISI Albany, State University of New York Press xi + 305 pp., $26.53 (paperback) ISBN 0–7914–3265–3 (alk. paper) ISBN 0–7914–3266–1 (paperback: alk. paper)     

Distress and coping with hot flushes at work: Implications for counsellors in occupational settings

This study explored whether mid-life women regard hot flushes at work as a substantial stressor. A sample of 29 working women reporting hot flushes for at least 12 months rated the degree to which each of ten work situations influenced flush distress or discomfort. Ratings were compared with qualitative accounts of coping with flushes at work. Results showed that women differed markedly in the work situations that they regarded as most problematic, but flush distress was commonly magnified during formal meetings, in hot enclosed spaces and in the presence of male colleagues. A substantial minority viewed colleagues as conveying negative attitudes towards menopausal problems, which jeopardised general confidence at work as well as creating specific difficulties during frush episodes. Flush distress was higher among those reporting embarrassment and dificulties disclosing menopausal status to others. Respondents made suggestions for ways in which the working environment could be improved to assist women in managing hot flushes. Coping with flushes was largely seen as an individual rather than organisational responsibility. Other stigmatising health problems may present similar subjective problems at work, and this needs further study. Some implications for counsellors working in organisational settings are explored.     

Using a self-evaluation system as a group contingency

The efficacy of a group-evaluation system was examined, with a reversal design, in two classes of students with disabilities. The results suggested that a group-evaluation system was effective in decreasing the inappropriate verbalizations of both groups. Student satisfaction data revealed that the students in both groups had positive reactions to the system. Factors contributing to the success of the intervention as well as suggestions for its implementation are discussed.     

Note on adolescents' time-use and scientific literacy

This study investigated the relative influence of self-reported, out-of-school experiences on 13-yr.-olds' scientific literacy, including the often studied variables of homework time and television time. Results, based on a national probability sample of 3,116 students, indicated that time spent doing homework, reading, and viewing television programs with an educational focus had significant and positive independent influences on scientific literacy net of home environment and students' background factors. Viewing television programs that emphasized entertainment negatively contributed to scientific literacy. The number of hours of television viewed was unrelated to literacy. Factors associated with the transition to adolescence, dating, and peer relations, were negatively related to scientific literacy. Findings were discussed in regard to improving students' performances in science.     

On the division of attention: A disproof of the single channel hypothesis

In dichotic listening, subjects are apparently unable to attend simultaneously to two concurrent, auditory speech messages. However, in two experiments reported here, it is shown that people can attend to and repeat back continuous speech at the same time as taking in complex, unrelated visual scenes, or even while sight-reading piano music. In both cases performance with divided attention was very good, and in the case of sight-reading was as good as with undivided attention. There was little or no effect of the dual task on the accuracy of speech shadowing. These results are incompatible with the hypothesis that human attention is limited by the capacity of a general-purpose central processor in the nervous system. An alternative, “multi-channel”, hypothesis is outlined.