Graduation Year


Document Type




Degree Granting Department

Psychological and Social Foundations

Major Professor

Shannon M. Suldo, Ph.D.

Committee Member

Linda Raffaele-Mendez, Ph.D.

Committee Member

Ellis Gesten, Ph.D.

Committee Member

Robert Dedrick, Ph.D.


wellness promotion, life satisfaction, positive affect, negative affect, therapeutic relationship, social self-efficacy, parent support, placebo effect, common factors of therapeutic change, youth intervention, group therapy


This study investigated the variance in subjective well-being (SWB) of early adolescents (n = 54) exposed to a positive psychology intervention aimed at increasing positive affect and life satisfaction as well as decreasing negative affect through intentional activities (e.g., gratitude journals, acts of kindness, use of character strengths, optimistic thinking). Understanding how to increase SWB among youth is important because of its associations with positive indicators of psychological and academic functioning. However, prior research is limited regarding interventions targeting SWB in youth and excludes the relation of common factors of therapeutic change. Based on the literature regarding therapeutic change, youth factors (i.e., parent support, social self-efficacy), therapeutic alliance, and participant expectancy for change were investigated to determine possible relation beyond the effects of intervention. Results of simultaneous multiple regression analyses indicate that specific common factors (i.e., expectancy, child-rated alliance, social self-efficacy), but not the SWB intervention, significantly relate to positive affect; further, data trends indicate the probable relation of positive psychology intervention to life satisfaction. Other data trends and indications for future research are discussed.