enquête (4) recherche (4) Technique (4) Research (4) Percentage (4) Design (4) Technique (4) Research (4) Design (4) norme (3) éducation (3) Education (3) Education (3) état (2) distribution (2) Teachers (2) Manufacturers' agents (2) Learning (2) High school students (2) Commission merchants (2) Analysis of variance (2) Ability (2) Quantitative research (2) Knowledge and learning (2) Influence (2) enseignement (1) stress (1) ressources (1) association (1) participation (1)