Confirmatory Factor Analysis of the Portuguese Version of the Arousal Predisposition Scale

  • Daniel Ruivo Marques
  • Ana Allen Gomes
  • Maria Helena Pinto de Azevedo
Article
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Abstract

The Arousal Predisposition Scale (APS) is an instrument aimed to assess individual differences in self-reported arousability, specifically physiologically arousal. Besides, it is a scale frequently used in stress and sleep-related researches. The principal purpose of this study is to determine the factor structure of the APS through confirmatory factor analysis (CFA) and to test the goodness-of-fit of one- and two-factor models. A sample of 341 undergraduate medical students of both genders aged 17 to 25 years was enrolled. Beyond the APS, the participants also filled out the Portuguese versions of the Pre-Sleep Arousal Scale (PSAS), Ford Insomnia Response to Stress Test (FIRST) and the Neuroticism scale of Eysenck Personality Inventory (EPI) for concurrent validity purposes. From the studied solutions, a modified two-factor model (F1 = emotional reactivity and F2 = trait anxiety) achieved the better fit to the data. The Portuguese version of the APS was also significantly correlated with measures of neuroticism, insomnia, sleep reactivity to stress, and cognitive and somatic arousal. The two-factor modified model appears to display a superior fit to the data, supporting a scoring model of the APS according to two different factors as suggested by a previous research on the Portuguese version. This study supports reliability and validity indicators of the APS and its use in research and applied settings.

Keywords

Arousal predisposition scale Confirmatory factor analysis Validation Psychometrics Undergraduates 

Notes

Acknowledgements

The co-operation of the professors and students is gratefully acknowledged.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Human and Animal Rights

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed Consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Daniel Ruivo Marques
    • 1
    • 2
  • Ana Allen Gomes
    • 3
    • 4
  • Maria Helena Pinto de Azevedo
    • 5
  1. 1.Department of Education and PsychologyUniversity of Aveiro, Campus Universitário de SantiagoAveiroPortugal
  2. 2.Institute for Biomedical Imaging and Life Sciences, IBILICoimbraPortugal
  3. 3.Faculty of Psychology and Educational SciencesUniversity of CoimbraCoimbraPortugal
  4. 4.CINEICC - Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo-Comportamental / Research & Development Unit (FCT): Cognitive and Behavioural Center for Research and InterventionCoimbraPortugal
  5. 5.Faculty of MedicineUniversity of CoimbraCoimbraPortugal

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