Mackworth Clock Vigilance Test

FREE for use with an Inquisit Lab or Inquisit Web license.

Available Test Forms

Macworth Clock Vigilance Test

The Macworth Clock Vigilance Test.
Duration: 1.5 minutes
(Requires Inquisit Lab)
(Run with Inquisit Web)
Last Updated


Google ScholarSearch Google Scholar for peer-reviewed, published research using the Inquisit Mackworth Clock Vigilance Test.

Mackworth, N. H. (1948). The breakdown of vigilance during prolonged visual search. Quarterly Journal of Experimental Psychology, 1, 6-21.

Giambra. L. M.. & Quilter, R. E. (1988). Sustained attention in adulthood: A unique, large-sample, longitudinal and multicohort analysis using the Mackworth Clock Test. Psychology and Aging, 3, 75-83.

Lichstein, K.L., Riedel, B.W., & Richman, S.L. (2000). The Mackworth Clock Test: A Computerized Version. The Journal of Psychology, 134, 153-161.

Williamson, A.M., Feyer, A.M., Mattick, R.P., Friswell, R., & Finlay-Brown, S. (2001). Developing measures of fatigue using an alcohol comparison to validate the effects of fatigue on performance. Accident Analysis and Prevention, 33, 313-326.

Wichniak, A., Waliniowska, E., Musinska, I., Czasak, K., Jakubczyk, T., Wierzbicka A., Wolkow, L., & Jernajczyk, W. (2011). P.3.c.016 EEG slowing, vigilance and daytime sleepiness during treatment with sedative and non-sedative antipsychotics. European Neuropsychopharmacology, 21, S477.

Blatter, K., Graw, P., Münch, M., Knoblauch, V., Wirz-Justice, A., & Cajochen C. (2006). Gender and age differences in psychomotor vigilance performance under differential sleep pressure conditions. Behavioural Brain Research, 168, 312-317.