The present study probed 409 Iranian English as foreign language (EFL) learners' motivation and attitude toward English as an International Language (EIL) by investigating the causal relationships of their facets via Structural Equation Modeling (SEM). To do so, the Persian version of the ‘attitudes toward EIL’ scale was designed and validated. It measures five constructs of: cultural realism, linguistic cultural disposition (negative), (dis)ownership of English, EIL posture, and localization. Then, the researchers utilized the validated scale along with the adapted Persian version of motivation scale designed by Taguchi et al. (2009) to explore the causal relationship among their facets. The latter scale measures seven dimensions of instrumentality prevention, instrumentality promotion, ideal L2 self, ought-to l2 self, learning experience, motivational intensity, and integrativeness. The findings of the study revealed that students' motivational intensity positively predicted by other motivational and attitudinal factors with 'ideal self' and 'instrumentality promotion' having the highest influence. It was also found that ‘cultural realism’ was a significant predicator of ‘localisation’, and ‘localisation’ was a significant positive predictor of ‘disownership of English’. ‘EIL posture’ was also in a positive direct relationship with ‘cultural realism’, whereas ‘linguistic cultural disposition’ (negative) was found to negatively influence other aspects including ‘motivational intensity’. This study has some implications for ELT professionals to revisit EFL motivation in light of attitudes toward EIL in expanding circle.
