sodium-ethylxanthate and Learning-Disabilities

Topics: Humans; Learning Disabilities; Prejudice; Racism; Religion; Sex; Sports; Stereotyping; Work

This paper examines the effects of season of birth and gender on academic achievement and cognitive abilities in children attending moderate learning difficulty schools. Given the high preponderance of both boys and children born in summer attending special schools it is important to consider how well these children perform in relation to their peers. A multivariate analysis reveals that both boys and summer born children perform better on tests of intelligence, mathematical ability, and reading comprehension. Summer born children also perform better on a test of communication skills. Discriminant functions analysis reveals that for both gender and season of birth IQ is the major predictor variable followed by reading comprehension, mathematical ability and communication skill. For gender, IQ discriminates more successfully than the other variables, whereas with season of birth the relative sizes of the effects are more comparable. The results of the analysis are discussed in terms of the implications for the identification of children for placement in moderate learning difficulty schools.

Topics: Adolescent; Child; Education, Special; Female; Humans; Intelligence; Learning Disabilities; Male; Seasons; Sex

Several theorists have suggested that deficits in visual discrimination play an etiological role in the development of reading deficits in children who are diagnosed as learning-disabled. Supporting this theory, a number of studies have shown that disabled readers make more errors on visual discrimination tasks than do good readers. The present study, however, suggests that those findings may have been due to a sex-difference artifact. Thirty-six 8- and 9-year-old good readers and reading-disabled children of both sexes responded to 40 matching items under untimed conditions. Males made more errors than females, but overall, reading-disabled children made no more errors than good readers. These findings, along with a reanalysis of previous studies, suggest that because reading disabilities are more common in males, evidence construed as supporting a visual discrimination hypothesis may have been an artifact of a sex difference in studies in which sex was not controlled.

Topics: Child; Discrimination Learning; Dyslexia; Female; Humans; Learning Disabilities; Male; Sex; Visual Perception

Topics: Child; Dyslexia; Female; Humans; Learning Disabilities; Male; Motor Skills; Nervous System Physiological Phenomena; Psychological Tests; Sex; Space Perception; Visual Perception