Use of the Sleep Assessment Device (Kelley and Lichstein, 1980) to validate insomniacs' self-report of sleep pattern

A comparison is presented of insomniacs' self-reported sleep pattern and objectively monitored sleep using the Sleep Assessment Device (SAD; Kelley & Lichstein, 1980). Analysis of 110 subject nights revealed modest but significant subjective overestimates of both sleep latency and sleep duration which were accounted for by the demands of the task (i.e., longer time periods are harder to estimate accurately). Correlations between self-report and SAD measures were, however, consistently high, suggesting that self-report may be a valid index of sleep disturbance. Results are discussed with reference to the clinician's task in evaluating sleep complaints.This research stury was supported by a grant from the Research Fund of Lanarkshire Health Board, Scotland.     

Commentary on high-performance computing and human vision II: Virtual reality and eyeball tracking

Visualization of scientific data that are not normally visible can be greatly enhanced by understanding human visual perception. Mars the Movie illustrated the use of stereo resolution for producing realistic vistas of the Mars surface. The real-time recording and analysis of eyeball-tracking data is another example of human vision research which benefits from high-performance computing. Currently the bottleneck is not in the hardware but in the available software to transform data efficiently.     

University students' priorities: Life goals vs. relationships

To assess the importance of life goals and relationships, a specially designed Life Goals Scale was administered to 303 university students (200 women and 103 men). Women's average ratings for relationships exceeded those of men. Men and women did not differ in average importance ratings of goals nor in tendency to sacrifice goals for a heterosexual relationship. Seventy-three percent were willing to sacrifice a majority of their goals for the relationship. The goal vs. relationship choices were influenced by sex role orientation, by dating status, and by the importance of marriage. Gender, age, year in school, parents' marital status, and grade point average were unrelated to goal vs. relationship choices. Stepwise multiple regression analyses indicated different predictors of goal vs. relationship choices for men and women.     

The Changing Self: Using Personal Documents to Study Lives

ABSTRACT In this paper we describe a technique for coding expressions of preoccupation with aspects of the adult self in personal documents and retrospective autobiographical writings In particular we explore the value of this approach by analyzing themes of identity, intimacy, and generativity expressed in Vera Brittain's diary and correspondence, written during her adolescence in World War I, and in her retrospective autobiographical account of that period in her life Analyses aim to use Erikson's theory of personality development to describe her psychological experience at the time and to compare that account with the later one     

The prevalence of specific learning disorder in mathematics and comorbidity with other developmental disorders in primary school-age children

Mathematics difficulties are common in both children and adults, and they can have a great impact on people's lives. A specific learning disorder in mathematics (SLDM or developmental dyscalculia) is a special case of persistent mathematics difficulties, where the problems with maths cannot be attributed to environmental factors, intellectual disability, or mental, neurological or physical disorders. The aim of the current study was to estimate the prevalence rate of SLDM, any gender differences in SLDM, and the most common comorbid conditions. The DSM-5 provides details regarding these only for specific learning disorders in general, but not specifically for SLDM. We also compared the prevalence rates obtained on the basis of the DSM-IV and DSM-5 criteria. We investigated the performance of 2,421 primary school children on standardized tests of mathematics, English, and IQ, and several demographic factors over the primary school years. We applied the DSM-5 diagnostic criteria to identify children with a potential diagnosis of SLDM. Six per cent of our sample had persistent, severe difficulties with mathematics, and, after applying the exclusion criteria, 5.7% were identified as having an SLDM profile. Both persistent maths difficulties and consistently exceptionally high performance in maths were equally common in males and females. About half of the children with an SLDM profile had some form of language or communication difficulty. Some of these children also had a diagnosis of autism, social, emotional, and behavioural difficulties or attention deficit and hyperactivity disorder. Our findings have important implications for research and intervention purposes, which we discuss in the study.