Machiavellianism, Lying, and Motivation as Predictors of Academic Performance in Romanian Engineering Students

This study explores the relationship between academic motivation, Machiavellian traits, and lying tendencies among Romanian engineering students, with a focus on how these psychological variables influence academic performance. Data were collected from 706 students using the MUSIC Model of Motivation, the Machiavellianism Scale, and the Lie Attitude Questionnaire. Statistical analysis included Spearman correlations, regression models, and moderation analysis using PROCESS Macro (Model 7). The results showed significant negative correlations between Machiavellianism and all five motivational dimensions (e.g., ρ = −0.259 for Empowerment, p < 0.001), as well as between lying tendencies and motivation (e.g., ρ = −0.206 for Empowerment, p < 0.001). Surprisingly, Machiavellianism had a positive effect on academic grades (β = 0.107, p = 0.043), suggesting strategic academic behavior. Motivation was a stronger predictor of performance among female students. These findings highlight the importance of promoting ethical, intrinsic motivation in university settings and call for thoughtful integration of behavioral variables into academic success models.