Cognitive load theory and educational multimedia

With two listening files, four multimedia was made. Two multimedia from each listening file. The difference between the two versions prepared from the same audio file was in applying or violating of Mayer’s multimedia learning principles. Thirty-nine participants were randomly divided into two groups. One group watched the with principle of the first audio file and the without principle of the second audio file, and the other group watched the opposite way. Meanwhile, their electroencephalography(EEG) were recorded. Then they participated in a post-test and finally completed a self-reported cognitive load questionnaire.