Bates, M. E., & Lemay, E. P. (2004). The d2 test of attention: Construct validity and extensions in scoring techniques. Journal of the International Neuropsychological Society, 10(392), 400. doi: 10.1017/s135561770410307x. Bishop, J. A., Chow, K. V., & Formby, J. P. (1994). Testing for marginal changes in income distributions with Lorenz and concentration curves. International Economic Review, 35, 479–488. doi: https://www.jstor.org/stable/2527065. Bouezmarni, T., Doukali, M., & Taamouti, A. (2022). Copula-based estimation of health inequality measures with an application to covid-19 [Available at SSRN]. https://ssrn.com/abstract=4076360 De Battisti, F., Porro, F., & Vernizzi, A. (2019). The Gini coefficient and the case of negative values. Electronic Journal of Applied Statistical Analysis (EJASA), 12(1), 85–107. doi: 10.1285/i20705948v12n1p85. Degroote, C., Schwaninger, A., Heimgartner, N., Hedinger, P., Ehlert, U., & Wirtz, P. H. (2020). Acute stress improves concentration performance. Experimental Psychology, 67(2), 88–98. doi: 10.1027/1618-3169/a000481. Erdely, A. (2017). Copula-based piecewise regression. In M. Ubeda Flores, E. de Amo Artero, F. Durante, & J. Fernàndez Sànchez (Eds.), Copulas and dependence models with applications (pp. 1–19). Springer. doi: 10.1007/978-3-319-64221-5-5. Genest, C., & Favre, A. C. (2007). Everything you always wanted to know about copula modeling but were afraid to ask. Journal of Hydrologic Engineering, 12(4), 347–368. doi: http://doi.org/10.1061/(ASCE)1084-0699(2007)12:4(347). Genest, C., Rémillard, B., & Beaudoin, D. (2008). Goodness-of-fit tests for copulas: A review and a power study. Insurance: Mathematics and Economics, 44(2), 199–213. doi: http://doi.org/10.1016/j.insmatheco.2007.10.005. Kakwani, N. C., Wagstaff, A., & van E. Doorslaer, E. (1997). Socioeconomic inequalities in health: Measurement, computation and statistical inference. Journal of Econometrics, 77(1), 87–104. doi: http://doi.org/10.1016/S0304-4076(96)01807-6. Krumm, S., Schmidt-Atzert, L., & Eschert, S. (2008). Investigating the structure of attention: How do test characteristics of paperpencil sustained attention tests influence their relationship with other attention tests? European Journal of Psychological Assessment, 24(108), 116. doi: 10.1027/1015-5759.24.2.108. Laskowska, I. (2012). Socio-economic inequalities in health-measurement problems and the results of analyses for {P}oland. Folia Oeconomica Stetinensia, 10(2), 92–102. doi: http://doi.org/10.2478/v10031-011-0030-1. Oakes, D. (1982). A model for association in bivariate survival data. Journal of the Royal Statistical Society Series B: Statistical Methodology, 44(3), 414–422. doi: http://doi.org/10.1111/j.2517-6161.1982.tb01222.x. Sandi, C. (2013). Stress and cognition. Wiley Interdisciplinary Reviews: Cognitive Science, 4, 245–261. doi: 10.1002/wcs.1222. Shields, G. S., Sazma, M. A., & Yonelinas, A. P. (2016). The effects of acute stress on core executive functions: A meta-analysis and comparison with cortisol. Neuroscience and Biobehavioral Reviews, 68, 651–668. doi: 10.1016/j.neubiorev.2016.06.038. Siburg, K., & Stoimenov, P. (2008). Gluing copulas. Communications in Statistics - Theory and Methods, 37(19), 3124–3134. doi: http://doi.org/10.1080/03610920802074844. Sklar, A. (1959). Fonctions de répartition à n dimensions et leurs marges. Publications de l’Institut de Statistiques de l’Université de Paris, 8, 229–231. Wagstaff, A., Paci, P., & van Doorslaer, E. (1991). On the measurement of inequalities in health. Social Science & Medicine, 33(5), 545–57. doi: http://doi.org/10.1016/0277-9536(91)90212-U. Wagstaff, A., Van Doorslaer, E., & Paci, P. (1989). Equity in the finance and delivery of health care: Some tentative cross-country comparisons. Oxford review of economic policy, 5(1), 89–112. doi: http://doi.org/10.1093/oxrep/5.1.89.