Abstract—According to many researchers, the degree of use of information systems is an important variable in the management information systems researchs field. The first objective of this research is to study the relationship between subjective (perceptual) and objective (system-generated) use measures for an information system. This research used e-mail as an information system. The model of Triandis was used as a theoretical basis to validate the operationalization of the theoretical framework. The results show that users have significantly overestimated their weekly frequency of e-mail usage by 2.36 uses, and that in future researchs to obtain a more accurate subjective assessment of the frequency of use the researchers should encourage the use of questions with absolute number answers. The study also demonstrated a positive relationship between the perceived consequences and use of an information system and between social factors and the use of an information system. Contrary to Triandis model, we did not find a significant relationship between facilitating conditions, the attitude and the use of an information system.

Index Terms—Information system evaluation, Triandis model, objective use, subjective use, theory of reasonned action.

The authors are with Ecole Nationale de Commerce et de Gestion de Casablanca, Casablanca Morocco (email: k.gassemi@encgcasa.ac.ma).

Cite: Karim Gassemi, Siham Jabraoui, Merouane Bouhrouje, "Evaluation of the Use of Information Systems: Objective and Subjective Measures Effectiveness Analysis," International Journal of e-Education, e-Business, e-Management and e-Learning vol. 9, no. 1, pp. 61-66, 2019.