The concepts contributing to adventure therapy's effectiveness are: increases in self-esteem, self-concept, self efficacy, self perceptions, problem solving, locus of control, decrease in conduct disordered behaviors, overall positive behavioral changes, improved attitude, and that adventure therapy generates a sense of individual reward. Further aspects indicate that it increases group cohesion and interpersonal relatedness. It is important to note that AT has many challenges and things that could limit its effectiveness. These include: "availability of studies, heterogeneity, generalisability, type of data provided by empirical studies, and the methodological quality of studies."