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Chronobiology International
The Journal of Biological and Medical Rhythm Research
Volume 24, 2007 - Issue 3
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Original

Validity of the Morningness‐Eveningness Scale for Children among Spanish Adolescents

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Pages 435-447 | Received 18 Dec 2006, Accepted 15 Feb 2007, Published online: 07 Jul 2009
 

Abstract

Adolescents tend to be much later chronotypes than other age groups. This circadian phase delay is attributed as much to biological as psychosocial factors. Because the consequences of this change on performance and health have been documented, questionnaires to identify morning and evening‐type adolescents are necessary. The aim of the present study was to validate a Spanish version of the Morningness‐Eveningness Scale for Children (MESC) by means of several relevant psychological variables as external criteria. A sample of 623 urban high school students completed the MESC and self‐reported measures of sleep behaviors, subjective alertness, physical performance, and mood. On the whole, results indicate a good validity of MESC. Significant differences in the self‐reported ratings between morning and evening types were obtained by time‐of‐day. These results provide preliminary support for the Spanish version of MESC.

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