Introduction: Although benefits of dyad training versus individual training well has been established but there is little study that consider reasons of this advantages, especially from a psychological domain. This study aims at investigating mediator role of self-efficacy in dyad training method in learning taekwondo form 1.
Methodology: 25 boy students in two groups of dyad training (12 people) and individual training (13 people) were learned taekwondo form 1 in three 30 minutes sessions. The groups just were differed in their methods of practicing the task (taekwondo form 1). Thus people in Dyad training group in every sessions after receiving practitioner's verbal instructions and observing perfect model, practiced the task in a dyadic manner, while people in individual training group in this phase practiced individually the task. Self-efficacy questionnaire presented to participants once after verbal instructions and viewing model and once at retention test which was taken one week after last session of practice. This questionnaire included 6 questions and was according to bandura's suggestions.
Results: Results showed better performance of dyad training group than individual training group. Also results of independent test showed that progress of self-efficacy in dyad training group's people was significantly more than their peers in individual training group's people.
Discussion: According to the results could be concluded that one of the certain factors that makes learners participating in dyad training method acquires more learning despite fewer physical practice, is not only observing learning model through practice, but increasing a psychological factor named self-efficacy in them.