Estudio psicométrico del Índice de Carga Mental NASA-TLX con una muestra de trabajadores españoles
ISSN: 1576-5962
Year of publication: 2010
Volume: 26
Issue: 3
Pages: 191-199
Type: Article
More publications in: Revista de psicología del trabajo y de las organizaciones = Journal of work and organizational psychology
Abstract
The objective of this study was to assess the psychometric properties of NASA-Task Load Index using several groups of Spanish workers. The sample consisted of 398 workers who belonged to seven different jobs. All workers assessed the perceived mental workload when perform their jobs, due to each of the six dimensions of mental workload that distinguishes the NASA-TLX: effort, mental demand, physical demand, temporal demand, performance and frustration. The results showed that NASA-Task Load Index had a acceptable internal consistency and a factorial structure formed by two components. The first of the two components was formed by all of the NASA-TLX dimensions except frustration. The second was formed only by frustration dimension. Significant differences in the profiles of mental workload experienced by workers on the basis of their jobs were found for all NASA-TLX dimensions except in performance.
Bibliographic References
- Arquer, I. y Nogareda, C. (1999). Estimación de la carga mental de trabajo: el método NASA TLX. NTP 544. Madrid: INSHT.
- Battiste, V. y Bortolussi, M. (1988). Transport pilot workload: A comparison of two subjective techniques. En Proceedings of the Human Factors Society Thirty-Second Annual Meeting, 150-154, Santa Monica, CA: Human Factors Society.
- Charlton, S.G. (2002). Measurement of cognitive states in test and evaluation. En, S.G. Charlton y F.G.O’Brien (eds.), Handbook of Human Factors Testing and Evaluation. Londres: Lawrence Erlbaum Associates.
- Dalmau, I. (2007). Evaluación de la carga mental en tareas de control: técnicas subjetivas y medidas de exigencia. Tesis doctoral. Barcelona: UPC.
- Ferrer, R. y Dalmau, I., (2004). Revisión del concepto de carga mental: evaluación, consecuencias y proceso de normalización. Anuario de Psicología. 35, 521-545.
- Hacker, W. (1998). Carga mental de trabajo. En Stellman (Ed.), Enciclopedia de Salud y Seguridad en el Trabajo. Madrid: Ministerio de Trabajo y Asuntos Sociales 29, 44- 46.
- Hart, S. G. y Staveland, L. E. (1988). Development of NasaTlx (Task Load Index): Results Of Empirical And Theoretical Research. En P. A. Hancock Y N. Meshkati (Eds.), Human Mental Workload (pp. 139-183). NorthHolland, Amsterdam..
- Instituto Nacional de Seguridad e Higiene en el Trabajo (2007): VI Encuesta Nacional de Condiciones de Trabajo. Madrid: INSHT.
- Marras, W.S. y Karworwski, W. (2006) (eds.). Fundamentals and Assessment Tools for Occupational Ergonomics. Florida: Taylor & Francis.
- Noyes, J. M., y Bruneau, D. P. J. (2007). A self-analysis of the NASA-TLX workload measure. Ergonomics, 50, 514-519.
- O’Donell, R. y Eggemeier, F. T. (1986). Workload assessment methodology. En K. R. Boff, L. Kaufman y J. P. Thomas (Eds.), Handbook of perception and human performance, Nueva York: Wiley.
- Recarte, M.A., Pérez, E., Conchillo, A. y Nunes, L. M. (2008). Mental workload and visual impairment: differences between Pupil, Blink, and Subjective Rating. The Spanish Journal of Psychology, 11, 374-385.
- Rolo, G., Díaz, D., Hernández, E. (2009). Desarrollo de una escala Subjetiva de la Carga Mental de Trabajo (ESCAM). Revista de Psicología del Trabajo y de las Organizaciones, 25, 29-37.
- Rubio, S., Díaz, E. y Martín, J. (2001). Aspectos metodológicos de la evaluación subjetiva de la carga mental en el trabajo. Archivos de Prevención de Riesgos Laborales, 4, 160-168.
- Rubio, S., Díaz, E., Martín, J. y Puente, J.M. (2004). Evaluation of subjective mental workload: a comparison of SWAT, NASA-TLX and Workload Profile methods. Applied Psychology: An International Review, 53, 61-86.
- Rutledge, T., Stucky, E., Dollarhide, A., Shively, M., Jain, S. y Wolfson, T., (2009). A real-time assessment of work stress in physicians and nurses. Health Psychology, 28, 194-200.
- Tabachnick, B.G. y Fidell, L.S. (U1989). Using Multivariate Statistics (2ª ed.). Nueva York: Harper Collins.
- Tsang, G. y Wilson, G.F. (1997). Mental workload. En G. Salvendy (ed.), Handbook of Human Factors and Ergonomics. Nueva York: Wiley & Sons.
- Vidulich, M. A. y Tsang, P. S. (1987). Absolute magnitude estimation and relative judgement approaches to subjective workload assessment. En Proceedings of the Human Factors Society Thirty-First Annual Meeting, 1057-1061, Santa Monica, CA: Human Factors Society.
- Xiao, Y.M., Wang, Z.M., Wang, M.Z. y Lan, Y.J. (2005). The appraisal of reliability and validity of subjective workload assessment and NASA-task load index. Chinese Journal of Industrial Hygiene and Occupational Diseases, 23, 178-181.
- Young, M. S. y Stanton, N. A. (2001). Mental Workload Theory, Measurement and Application, en Karwowski (Ed.) International Encyclopedia of Ergonomics and Human Factors (pp 507-509). London, New York: Taylor and Francis.