Purves, D. et al. Neuroscience. (Sinauer Press, 2012).

Cauquil, A. S. et al. 'Neural correlates of chromostereopsis: an evoked potential study'. Neuropsychologic, 47, 2677–81 (2009). Dreiskaemper, D. et al. 'Influence of red jersey color on physical parameters in combat sports'. Journal of Sport and Exercise Psychology, 35, 44–9 (2013). Farrelly, D. et al. 'Competitors who choose to be red have higher testosterone levels'. Psychological Science, 24, 2122–4 (2013).