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Direct linkde Oliveira, Maria Luiza Cruz; de Nogueira Holanda, Francisco Wilson; Valdez, Pablo; de Almondes, Katie Moraes; de Azevedo, Carolina Virgínia Macedo – Mind, Brain, and Education, 2020
Excessive usage of electronic devices delays bedtime and increases nighttime arousal, reducing sleep duration of adolescents in the morning shift. The impacts of media use before bedtime (MBB) on sleep patterns and components of morning attention were evaluated in 89 adolescents (15.8 ± 0.8 years) using sleep questionnaires and a continuous…
Descriptors: Attention Control, Telecommunications, Handheld Devices, Sleep
Belísio, Aline S.; Kolodiuk, Fernanda F.; Louzada, Fernando M.; Valdez, Pablo; Azevedo, Carolina V. M. – Mind, Brain, and Education, 2017
Children tend to sleep and wake up early and to exhibit daytime sleep episodes. To evaluate the impact of school start times on sleepiness and attention in preschool children, this study compared the temporal patterns of sleep, daytime sleepiness, and the components of attention between children aged 4-6 years that study in the morning (n = 66)…
Descriptors: Sleep, Time, Attention, Preschool Children
Valdez, Pablo; Reilly, Thomas; Waterhouse, Jim – Mind, Brain, and Education, 2008
Cognitive performance is affected by an individual's characteristics and the environment, as well as by the nature of the task and the amount of practice at it. Mental performance tests range in complexity and include subjective estimates of mood, simple objective tests (reaction time), and measures of complex performance that require decisions to…
Descriptors: Reaction Time, Mathematical Models, Academic Achievement, Performance Tests
