Shafiei, M., M.-C. Lai, A.-H. Memari, F.-S. Mirfazeli, S. Zarei, P. Moshayedi, and R. Kordi. “Factor Structure and Psychometric Properties of the Farsi Versions of Empathy and Systemizing Quotient: Short Forms”. Iranian Journal of Psychiatry, Vol. 13, no. 4, Aug. 2018, pp. 254-63, http://ijps.tums.ac.ir/index.php/ijps/article/view/1059.