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Composite and Preferences Scales of Morningness: Reliability and Factor Invariance in Adult and University Samples

Published online by Cambridge University Press:  10 April 2014

Juan Francisco Díaz Morales  and
María Pilar Sánchez-López
Juan Francisco Díaz Morales*
Affiliation:
Complutense University of Madrid
María Pilar Sánchez-López
Affiliation:
Complutense University of Madrid
*
Correspondence concerning this article should be addressed to Juan Francisco Díaz Morales, Departamento de Psicología Diferencial y Psicología del Trabajo, Facultad de Psicología.Universidad Complutense de Madrid. Campus de Somosaguas. 28223 Madrid (Spain). E-mail: juanfcodiaz@psi.ucm.es
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Abstract

The creation and adaptation of scales or inventories assessing specific circadian typologies has been a predominant focus within the field of chronopsychology. The present study addressed the psychometric properties of two scales of morningness-eveningness: the Morningness Composite Scale (CS; Smith, Reilly, & Midkiff, 1989) and the Early/Late Preferences Scale (PS; Smith, Folkard, Schmieder, Parra, Spelten, & Almirall, 1993). Internal consistency and factor invariance of the CS and PS were analyzed in two samples: a group of 203 university students (age range = 19-30) and a group of 125 working adults (age range = 31-65). Results indicated satisfactory internal consistency for both full scales with each age group and confirmed the factor invariance across age for the two CS factors and one of the PS factors. A higher tendency in morningness on both scales was noted in the adult sample.

Uno de los campos de estudio más desarrollado por la cronopsicología ha sido la creación y adaptación de escalas o inventarios para evaluar la tipología circadiana. En este estudio se presentan las propiedades psicométricas de dos escalas de evaluación de la matutinidad-vespertinidad: la Escala Compuesta de Matutinidad (CS; Smith, Reilly y Midkiff, 1989) y la Escala de Preferencias (PS; Smith, Folkard, Schmieder, Parra, Spelten y Almirall, 1993). Para cada escala, se analizó tanto la consistencia interna como la invarianza factorial en dos muestras: un grupo de 203 universitarios (edad entre 19 y 30 años) y un grupo de trabajadores adultos (edad entre 31-65 años). Los resultados indican una consistencia interna adecuada para cada una de las escalas en ambos grupos, así como una estructura factorial invariante en función de la edad para los dos factores de la CS y uno de los factores de la PS. Aparece una mayor tendencia a la matutinidad en el grupo adulto.

Keywords

morningness-eveningnessundergraduatesadultsreliabilityfactor invarianceage differencesmatutinidad-vespertinidaduniversitariosadultosfiabilidadinvarianza factorialdiferencias de edad
Type
Articles
Information
The Spanish Journal of Psychology , Volume 7 , Issue 2 , November 2004 , pp. 93 - 100
Copyright
Copyright © Cambridge University Press 2004

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