International Journal of Research Studies in Psychology 2016 April, Volume 5 Number 2, 51-63 © The Author(s) / Attribution-NonCommercial CC BY-NC The “SENANG” training to increase the subjective well-being of adolescent students Dewanto, Aji Cokro Faculty of Psychology, Universitas Gadjah Mada, Indonesia (cokrodewanto@yahoo.com) Alsa, Asmadi Faculty of Psychology, Universitas Gadjah Mada, Indonesia (asmalsa@ugm.ac.id) Received: 21 November 2015 Revised: 29 November 2015 Accepted: 10 February 2016 Available Online: 16 February 2016 DOI: 10.5861/ijrsp.2016.1377 ISSN: 2243-7681 Online ISSN: 2243-769X OPEN ACCESS Abstract The educational problems indicate that a number of senior high school students feel discomfortable while studying at school. At adolescent students, the problems are generally caused by the negative evaluation of their daily activities, particularly in the school area that appear the negative affectation. Hence, this research aimed to find out the effectiveness of the “SENANG” training program in order to increase the subjective well-being of adolescent students. This quasi experiment was conducted by using the untreated control group design with dependent pretest and posttest samples using double pretest. The technique of collecting data was done by using Subjective Well-Being of Adolescent Students Scale. The subjects of this research were 18 adolescent students at range of age 15-17 years old with subjective well-being score in medium category. The results showed that the subjective well-being of adolescent students at the experimental group was higher than the control group after the intervention. The “SENANG” training gave a contribution to the subjective well-being of adolescent students up to 78.4%. Keywords: subjective well-being; rational-emotive approach; adolescent students; rational-emotive approach based training; quasi experiment