“…In the past, historians have primarily studied the development of scientific psychology in the light of the biographies of pioneers (e.g., Fancher, 1985;Kimble, Wertheimer, & White, 1991;Kimble, Boneau, & Wertheimer, 1996), psychological research methodology (e.g., Danziger, 1990), publishing houses and editorial policy of books and journals (e.g., Nicolas, 2015), descriptions of laboratories (e.g., Capshew, 1992) and of some of their instruments (e.g., Evans, 1999;Schmidgen, 2005;Nicolas & Thompson, 2015), etc. Although some information is available on lists of instruments located in early laboratories (e.g., Popplestone & McPherson, 1971, 1980Nicolas & Young, 2014), to my knowledge little has been written about the relationships existing between psychologists and instrument designers (see however Benschop & Draaisma, 2000;Evans, 2000;Haupt, 2001).…”