The effect of uncertainty on learning in game-like environments. - Erol Ozcelik; Nergiz Ercil Cagiltay; Nese Sahin Ozcelik (Comput. Educ., 2013)

The effect of competition on learning in games. - Nergiz Ercil Cagiltay; Erol Özçelik; Nese Sahin Ozcelik (Comput. Educ., 2015)