Biomedical subjects

Amiram Raviv

Publications and source records attributed to Amiram Raviv.

3 recordsLinked to original sources

PubMed2002

Young Israelis' reactions to the Rabin assassination: two perspectives.

The study analyzed the responses of 713 Israeli adolescents, aged 12-17, to 3 open questions regarding their behavior following Rabin's assassination. Participants' explanations for their own behavior and for the youth's behavior as a whole were analyzed and compared. Adolescents responded mainly with pain and authentic grief. Because explanations were elicited from two different perspectives, results of the comparison were discussed with reference to the actor--observer hypothesis (E. E. Jones & R. E. Nisbett, 1972). Participants' responses were also analyzed as a function of gender, age and political stance. Girls, older children, and supporters of Rabin's peace policy expressed their grief more strongly.

Adolescent↗

PubMedDate not supplied

Sleep, neurobehavioral functioning, and behavior problems in school-age children.

The aim of this study was to examine the associations between sleep and neurobehavioral functioning (NBF) in school-age children. These variables were assessed for 135 unreferred, healthy school children (69 boys and 66 girls), from second-, fourth-, and sixth-grade classes. Objective assessment methods were used on the participants in their regular home settings. Sleep was monitored using actigraphy for 5 consecutive nights; and NBF was assessed using a computerized neurobehavioral evaluation system, administered twice, at different times of the day. Significant correlations between sleep-quality measures and NBF measures were found, particularly in the younger age group. Children with fragmented sleep were characterized by lower performance on NBF measures, particularly those associated with more complex tasks such as a continuous performance test and a symbol-digit substitution test. These children also had higher rates of behavior problems as reported by their parents on the Child Behavior Checklist. These results highlight the association between sleep quality, NBF, and behavior regulation in child development; and raise important questions about the origins of these associations and their developmental and clinical significance.

Attention↗

PubMedDate not supplied

The effects of sleep restriction and extension on school-age children: what a difference an hour makes.

This study assessed the effects of modest sleep restriction and extension on children's neurobehavioral functioning (NBF). The sleep of 77 children (age: M = 10.6 years; range = 9.1-12.2 years) was monitored for 5 nights with activity monitors. These children (39 boys and 38 girls) were all attending regular 4th- and 6th-grade classes. Their NBF was assessed using computerized tests on the 2nd day of their normal sleep schedule. On the 3rd evening, the children were asked to extend or restrict their sleep by an hour on the following 3 nights. Their NBF was reassessed on the 6th day following the experimental sleep manipulation. Sleep restriction led to improved sleep quality and to reduced reported alertness. The sleep manipulation led to significant differential effects on NBF measures. These effects may have significant developmental and clinical implications.

Child↗