eng Science and Education Publishing American Journal of Applied Psychology 2333-4738 2016-01-20 4 1 1 10 10.12691/ajap-4-1-1 AJAP2016411 article Yener ?ZEN yenerozen@erzincan. edu.tr 1 Department of Education Science, Education of Faculty, Erzincan University, Yaln?zba? Campus, Erzincan, Turkey In this study the effectiveness of a guidance program prepared to improve the problem solving skill, which is an important part of development in many areas, from academic life to daily life, is investigated. The research is a model of pre-test and post-test experiment with control group. The sample of this study is 20 students selected from 9. grade students of Erzincan Anatolian Vocational School for Trade and Commerce High School. Problem Solving Inventory which was adapted to Turkish by ?ahin, ?ahin and Heppner [37] was used in this study. To analyze the data, Non-Parametric Mann Whitney U and Non-Parametric Wilcoxon Signed Rank Test were used. According to the result of this study, it is found that significant difference in problem solving skills of students who attended the trainingprogram by the side of students not attending the program. http://pubs.sciepub.com/ajap/4/1/1/ajap-4-1-1.pdf problem problem solving training of problem solving