A student conceptual model can be defined as a set of interconnected concepts associated with an estimation value that indicates how well these concepts are used by the students. It can model just one student or a group of students, and can be represented as a concept map, conceptual diagram or one of several other knowledge representation formats. Some e-assessment systems that automatically evaluate free-text students’ answers have recently been extended to include the possibility of automatically generating students’ conceptual models. The research reported in this paper focuses on studying the effects of showing these automatically generated models to students and teachers. The e-assessment system used was the Will Tools suite with a group of Engineering students during a semester at the Universidad Autónoma of Madrid.