The present study aimed to develop an instrument to measure emotional intelligence (EI). This novel scale distinguishes between four factors, namely, self- and other-focused emotion appraisal and emotion regulation. In Study 1, the Rotterdam Emotional Intelligence Scale (REIS) was developed and examined with respect to its factorial structure and reliability (N = 383). In Study 2, the factorial structure of the REIS was validated in two new samples (N = 2728 and N = 590). Study 3 examined convergent and discriminant validity by comparing the REIS dimensions with other EI instruments, cognitive intelligence, and personality (N = 108 and N = 105). The criterion validity of the REIS was examined in Study 4 (N = 73, N = 95, and N = 103). The results indicate that the REIS follows a four-factorial structure and can be reliably measured with 28 items. The REIS was strongly correlated with other self-reported EI instruments and weakly to moderately correlated with an ability EI test, cognitive intelligence, and personality. Moreover, self-focused emotion regulation was negatively associated with tutors' perceived stress, whereas other-focused emotion regulation was positively associated with tutors' work engagement, jobseekers' other-rated interview performance, and leaders' transformational leadership style.

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Keywords Emotional intelligence, Emotions, Scale development
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Journal Personality and Individual Differences
Pekaar, K.A, Bakker, A.B, van der Linden, D, & Born, M.Ph. (2018). Self- and other-focused emotional intelligence: Development and validation of the Rotterdam Emotional Intelligence Scale (REIS). Personality and Individual Differences, 120, 222–233. doi:10.1016/j.paid.2017.08.045