Psichometric equivalence of an improved Basic Languaje Morningness (BALM) Scale using industrial population within comparisons

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<title>Psichometric equivalence of an improved Basic Languaje Morningness (BALM) Scale using industrial population within comparisons</title>
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<title>Ergonomics</title>
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<name type="personal" usage="primary" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080238803">
<namePart>Brown, Frederick M.</namePart>
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<dateIssued encoding="marc">1993</dateIssued>
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<abstract displayLabel="Summary">An existing 13-item composite circadian rhythm "morningness" scale was simplified into a "Basic Language Morningness" (BALM) scale at a seventh grade (12-13 years) reading level. It was given to 150 each of continuously rotating shiftworkers and fixed-schedule dayworkers in an industrial manufacturing plant. Multiple factor analyses confirmed three prior identified factors, morningness/effort, morning alert, and evening</abstract>
<note type="statement of responsibility">Frederick M. Brown</note>
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<topic>Ergonomía</topic>
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<topic>Trabajo por turnos</topic>
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<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080577940">
<topic>Ritmo circadiano</topic>
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<topic>Lenguajes de programación</topic>
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<topic>Análisis factorial</topic>
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<subject authority="lcshac" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080601492">
<topic>Estudios comparativos</topic>
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<title>Ergonomics</title>
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<publisher>London and Washington</publisher>
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<text>Vol. 36, nº 1-3, January-March 1993 ; p. 191-197</text>
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