Effects of iron deficiency in infancy on patterns of motor development over time

This longitudinal study of the effects of iron deficiency in infancy assessed motor development over time in 185 healthy Costa Rican children who varied in iron status at 12-23 months. Longitudinal analyses (hierarchical linear modeling) used the Bayley Psychomotor Index before and both 1 week and 3 months after iron treatment in infancy and the Bruninks-Oseretsky Test of Motor Proficiency - long form at 5 years and short form at 11-14 years. Children with chronic severe iron deficiency in infancy had lower motor scores at the beginning of the study and a lower but parallel trajectory for motor scores through early adolescence. Thus, there was no evidence of catch-up in motor development, despite iron therapy in infancy that corrected iron deficiency anemia in all cases.     

Angioedema and maculopapular eruptions associated with carbamazepine administration

Cutaneous rashes and eruptions can be caused by many medications, including carbamazepine. The presentation can be varied depending on severity. Cutaneous eruptions occur in 3% of individuals administered carbamazepine. Angioedema, a rare side effect of carbamazepine, involves vascular leakage in dermis and subcutis mediated by immunoglobulin E and/or bradykinins. Angioedema is more common in females and in the third decade of life. We report the case of a 27-year-old Indian woman who developed maculopapular rash and angioedema secondary to carbamazepine administration. The patient responded successfully to withdrawal of the drug and treatment with antihistamines. Due to the potentially life-threatening complications of this condition and the increasing use of anticonvulsants in the treatment of mood disorders, psychiatrists must be aware of the diagnosis and treatment of this condition.     

Self-regulation and inhibition in comorbid ADHD children: an evaluation of executive functions

The relationship between executive function and comorbid diagnoses in ADHD children is examined. One hundred six children between 7 and 15 years of age are assessed using the Tower of London (TOL), a test of executive function, and the Kiddie Schedule of Affective Disorders and Schizophrenia, Present and Lifetime Version, a diagnostic interview. All children met the diagnostic criteria for ADHD. A majority of the children had comorbid anxiety disorders, mood disorders, or oppositional defiant disorder. Measures on the TOL are total move score, total initiation time, and total rule violations. Age is predictive in all three measures of executive function as assessed by the TOL. Gender is predictive of total initiation time and total rule violations. Comorbid disorders are found to not have significance on executive function as measured by the TOL. This study concludes that comorbid disorders may not affect executive function.     

Lateral biases in assumptions of lighting position

People presume that the light source in pictures comes from above, and there is some evidence that this phenomenon also demonstrates lateral biases. When investigators present multiple ambiguous stimuli or visually complex objects, people assume that the source of light is from above, and to the left. However, when single relatively simple stimuli are presented, this lateral bias is not readily observed. To investigate whether lateral bias is dependent on the number of stimuli presented, the present experiment employs a within-subjects design to present single spheres or pairs of spheres. Contrary to our expectations, leftward biases were exhibited in both the single-sphere condition and the paired-spheres condition. Single spheres that were lit from the left were more likely to be judged as convex than comparable spheres lit from the right. Similarly, when pairs of laterally lit spheres were presented and participants were asked to judge which sphere appeared to be more convex, participants chose spheres lit from the left regardless of the angle of illumination. Collectively, these results suggest that there are lateral biases in assumptions of illumination position and that these biases do not depend on the number of stimuli being perceived at any given time.     

Laterality of phonological working memory: dependence on type of stimulus,memory load,and sex

Investigations of the laterality of phonological working memory have not always yielded consistent results. The present experiment investigated working memory for letters and numbers in two memory load conditions. In the low load condition, working memory for letters and numbers was similar. However, in the high load condition, males were more accurate at the recall of letters. This effect was not observed with numbers, in which both sexes performed more poorly. Furthermore, we observed consistent RVF advantages for both tasks, although males were more asymmetrical for the recall of letters and females were more asymmetrical for the recall of numbers. This result indicates that laterality of working memory for letters and numbers differs, and these asymmetries depend upon the sex of the participant.     

Mimetic Relation as Matching-to-Sample Observing Response and the Emergence of Speaker Relations in Children with and without Hearing Impairments

This study investigated the effect of matching-to-sample and mimetic-relations teaching on the emergence of signed tact and textual repertoire through a multiple-baseline design, across three groups of three words in children with and without hearing impairments and with no reading repertoire. Following mimetic-relations teaching and the establishment of nine three-member stimulus classes containing signs, pictures, and printed words via matching-to-sample procedure, including the mimetic relation as the differential observing response, tact (signing in the presence of a picture) and textual (signing in the presence of a printed word) emergent repertoires were tested. Results showed the emergence of signed tact and textual responses. The mimetic relation brought in under the contextual control of a matching-to-sample task may have allowed participants to simultaneously learn speaker and listener relations to the particular signs used.

     

Academic Counselling for Graduate Research Students with Distance Learning

The study examined academic counselling needs for graduate research students enrolled with a distance education university. Participants were 17 students (males = 10, females = 7; mean years of enrollment =1). They responded to an open ended questionnaire on pertinent counselling needs in these students related to their studies. Data were analyzed qualitatively using thematic content analysis. Findings suggested counselling needs from conflicting work and family commitments. Accessibility and user-friendliness of administrative systems and support, ease of contact and approachability of academic staff and financial strain were also significant concerns. Prospective solutions to these needs included stress management, time management, self-study skills and income generation.     

Lifetime history of cigarette smoking associated with aggression and impulsivity in both healthy and personality disordered volunteers

Cigarette smoking has been associated with several personality and behavioral traits including impulsivity and aggression, primarily in adolescents and/or pregnant women. In this study, the authors tested the hypothesis that history of cigarette smoking is also associated with dimensional measures of aggression and impulsivity in adult subjects. Subjects were 179 personality disordered (PD), and healthy volunteer control (HV), subjects in whom history of cigarette smoking and measures of both aggression and impulsivity were collected. Scores on measures of both aggression and impulsivity were elevated as a function of personality disorder status and history of cigarette smoking status; no interaction between these two factors were noted on these measures. Including socio-economic status and global psychosocial functioning in the model eliminated the difference associated with diagnostic grouping and impulsivity but not the difference in aggression associated with lifetime history of smoking. These data suggest that lifetime history of cigarette smoking is associated with elevations in life history of aggression regardless of the presence of psychiatric disorder in nontreatment seeking individuals.