“…Nicolas, Coubart, & Lubart, 2014). The agenda of this individual psychology was officially set with the appearance in 1896 of the famous article by Binet and Henri (1896) which constituted the founding act of a research project that continued over the following years with polemic works on cephalometry, graphology (Nicolas, Andrieu, Sanitioso, Vincent, & Murray, 2015) and esthesiometry (Nicolas & Makowski, 2016). Thus, as we shall see in the concluding part of this work, thanks to the work on tactile sensitivity performed by Binet at the very start of the 1900s using a compasslike instrument (a type of esthesiometer) which he himself invented, it became possible to propose a purely psychological hypothesis to account for Hyades' results (Hyades & Deniker, 1891).…”