Several studies have been conducted in the field of Technology Enhanced Learning(TEL) have shown that the adaptation to learner's learning styles is a task that must be taken into account during the design phase of the educational sequences to increase the student's motivation. Cognitive psychologists have proposed various models of style, which it's often represented by using multiple dimensions statistically estimated, each model suggests an instrument for measuring an individual's learning style. Most of them use questionnaires such as (Honey and Mumford (1992), Kolb (1984), Index of Learning Styles (ILS)). For this reason, the main aim of this paper is to show the results of a study that was addressed to doctoral students. The sample of the population was made up of 300 persons. The main finding of this paper is:• To illustrate the effectiveness of the French version of the Index Learning Styles (ILS) and uses factor analysis for an investigation into various dimensions to help students decrease the time spent on this test.• The generation of an adaptable learning game (LG) and the development of a new version of the eAdventure authoring tool based on E-ILS, capable of fixing learners' preferences (desires, habits, etc.).