Varia Vol. 119, 2019/1 - pagesPages 3 to 24Approximate number system training with vision or touch in childrenBy Fanny Gimbert, Édouard Gentaz, Karine MazensPages 25 to 53Improving recall and imagination of past and future events through Episodic Specificity Induction: A French adaptation and validation studyBy Rudy Purkart, Guillaume T. Vallet, Rémy VersacePages 55 to 96The use of experimental and quasi-experimental single-case designs in psychology: Theoretical and methodological aspectsBy Christelle RobertPages 97 to 170Weber’s Compass and Aesthesiometers: History of the technical evolution of devices for tactile discriminationBy Serge Nicolas, Dalibor Vobořil