The effect of taping sprained ankles on various aspects of proprioception has been investigated but is unclear because of conflicting results. Taping improved the ability to actively reproduce a passively positioned inversion angle in persons with unstable ankles.11 Yet taping had no effect on detection of movements in the plantar flexion/dorsiflexion plane in recurrent ankle sprain17 nor in the arguably more relevant inversion-eversion plane.10 However, Hubbard and Kaminski10 did not strictly apply the principles of psychophysics testing. When identifying thresholds, the principles of psychophysics testing include presentation of movement stimuli a large number of times to determine the average location of the threshold4,12; and, as thresholds vary with time,4,14,19 presentation of movement stimuli of different magnitudes because the threshold is not an “all or none” cutoff 4,12; and presentation of movement stimuli in more than 1 direction to avoid forced choice (ie, is it moving or not?) because 50% of the movements are likely to be detected by chance.13 However, in the study of Hubbard and Kaminski,10 only 1 velocity was tested; only 3 trials in each direction were provided; and, although both inversion and eversion directions were tested, they were not presented in a mixed fashion. Therefore it is not clear whether the disagreement in findings in the inversion-eversion plane that exists is a product of the aspect of proprioception measured or the quality of the measurement protocol. The purpose of this study is to determine whether taping the ankle improves movement detection in the inversion-eversion plane, using a rigorous test protocol that conforms to the principles of psychophysical testing. We hypothesized that the application of tape would improve the ability to detect inversion and eversion movements at the ankle.