The effectiveness of Transcendental Direct Electric Stimulation (TDCS) on improving cognitive functions and problem solving skills of students

The purpose of this study was to investigate the effectiveness of transcendental direct electric stimulation (TDCS) on improving cognitive functions and student problem solving. Its design includes pretest-posttest with a control group. The population of the study consisted of all male high school students in the academic year 2017-2018 (N=1029). 30 of them were selected by multistage cluster sampling. They were randomly divided into two groups of experimental (n=15) and control (n=15). TDCS was performed in 10 sessions for the experimental group and the control group did not receive any intervention. To collect the data, Montreal cognitive test and London Tower test were used. To test the research hypothesis, multivariate covariance analysis and one variable test were used. The results showed that TDCS increased the mean scores of cognitive functions and problem solving skills (p<.01). An over-speech direct electrical stimulation therapy can improve the students' cognitive functioning and problem solving skills.