Triantoro  Safaria, Ahmad Muhammad  Diponegoro, Khoiruddin  Bashori, 
    The Efficacy of Gratitude and Forgiveness Training to Increase Happiness,
    The Social Sciences,
    Volume 12,Issue 11,
    2017,
    Pages 1948-1951,
    ISSN 1818-5800,
    sscience.2017.1948.1951,
    (https://makhillpublications.co/view-article.php?doi=sscience.2017.1948.1951)
    Abstract: This study aims to test whether there is the influence of gratitude and forgiveness training to increase
happiness in adolescents. A total of 30 randomly selected adolescents involved in this research. Randomized
pre-post test control group design was used to examine the module intervention. The results of data analysis
using t-test showed a significant difference in happiness between the experimental group with the control group
(t = 4.579, p = 0.000). These results demonstrated a positive effect of gratitude and forgiveness training to
increase happiness.
    Keywords: Gratitude;forgiveness;happiness;intervention;randomized;randomly selected