2. Outcomes
2.1 Overall Psychosocial Problems
Four studies focused on overall psychosocial problems
[76,79,83][68][69][70]. This category consists of outcomes on overall psychosocial problems, problem behavior related to autism, and effect as an underlying concept for emotional functioning. The studies involved six children in the age of 10–12 years
[76][68] and 199 adolescents in the age of 12–18
[79,83,84][69][70][71]. Two studies had a RCT design
[83[70][71],
84], and the other two studies had a pre- and post-test design
[76,79][68][69]. One study examined effects on psychosocial problems reported by the adolescents and their teachers
[83][70]. The study showed differences between psychosocial problems reported by the adolescent versus the teacher: a decrease in overall psychosocial problems was found reported by adolescents, while no effect was found reported by teachers
[77][72]. A positive effect reported by adolescents was also seen in another study examining effects on psychosocial problems
[84][71]. One study examined autism problem behavior, both reported by the parents as well as by the students themselves. No effect was found on the autism problem behavior after the intervention
[76][68]. There was one study examining the effects of intervention on negative and positive affect. An increase in positive affect was found, but no effect was found for negative affect
[79][69].
2.2. Internalizing Problems
Six studies focused on the effects of drama therapy interventions on internalizing problems
[75,76,79,81,82,83][68][69][70][73][74][75]. The category internalizing problems consisted of outcomes regarding anxiety, depression, (di)stress and posttraumatic stress, timidity, obsessive compulsive disorder, interpersonal sensitivity, and somatization. The studies involved 164 children in the age of 9–18 years. Two of the studies had a RCT design
[81[70][74],
83], one study had a CCT design
[75][73], and three studies had a pre- and post-test design
[76,79,82][68][69][75]. One study examining the effect of drama therapy interventions on internalizing problem behavior rated by the parents and students did not show an effect on this outcome
[76][68]. Two studies examined the effect on anxiety
[79,82][69][75]. The results of one study showed a decrease in anxiety
[79][69], and the results of the other study did not show any effect on anxiety. Two studies examined effects on specific anxieties, i.e., social anxiety
[75][73] and phobic anxiety
[82][75]. Only a decrease was seen for social anxiety. Two studies examined the effects on depression. Results of both studies showed a positive effect on this outcome
[79,82][69][75]. Two studies examined the effects on stress, i.e., distress
[83][70], and symptoms of posttraumatic stress
[79][69]. The results of both studies showed a decrease in distress rated by the students, and in one study, there was also a decrease in symptoms of posttraumatic stress, while the results rated by the teachers did not show an effect on distress. Other studies examining the effect on psychopathology symptoms showed a decrease in symptoms of psychotic thinking
[82][75] and in severe timidity
[81][74], while there was no effect on somatization, paranoid ideation, interpersonal sensitivity, and obsessive compulsive disorder
[82][75].
2.3. Externalizing Problems
Three studies focused on the effect of the drama therapy interventions on externalizing problems
[76,78,82][68][75][76]. This category consisted of outcomes on overall externalizing problem behavior, impulsivity, hyperactivity, (in)attention, assertiveness, hostility, violent recidivism risk, and the number of registered incidents. The studies involved six children in the age of 10–12 years
[76][68], five adolescents in the age of 12–18
[82][75], and 91 adolescents in the age of 16–19 years
[78][76]. One study had a CCT design
[78][76], and the other studies had a pre- and post-test design
[76,82][68][75]. One study examined externalizing behavior, hyperactivity, and inattention, both self-rated as well as rated by their parents. No effect was found for externalizing behavior rated by the students. However, parents’ ratings showed a decrease in externalizing problems behavior. In addition, both student and parents reported a decrease in hyperactivity and inattention
[76][68]. Another study examining inattention and impulsivity showed a decrease in symptoms on both inattention and impulsivity
[78][76]. One study examined results on hostility
[82][75], and one study examined assertiveness and violent recidivism risk behavior
[78][76]. The results of these studies showed a decrease in hostility and violent recidivism risk behavior and an increase in assertiveness, but there was no increase in the number of registered incidents
[78][76].
2.4. Social Functioning
Three studies
[76,82,83][68][70][75] focused on the effect of drama therapy intervention on social functioning. This category consisted of outcomes related to social skills, more specially the perception of the students and teachers regarding the extent to which psychosocial problems interfered with home life, friendship, leisure activities, the outcome on self-esteem in social behavior and the satisfaction with social support. The studies involved 134 children in the age of 11–18 years. One of the studies had a RCT design
[83][70], and the other studies had a pre- and post-test design
[76,82][68][75]. One study examined effects on overall social skills rated by the children and by their parents. The results showed a positive effect on overall social skills rated by the parents, while the results rated by the children did not show any effects of intervention on overall social skills. Results regarding more specific socials skills, such as communication, cooperation, responsibility, empathy and self-control, rated by the children and by their parents, did not show any effects. However, the amount of engagement rated by the parents showed an increase after the intervention
[76][68]. One study examined the effects on satisfaction with social support and social desirability behavior; no differences were found after the interventions
[82][75]. Another study examined to what extent the psychosocial problems interfere with friendship, with home life, and with leisure activities from the perception of students and their teachers. A positive effect was observed when the scores of the students were analyzed, while no effects were found for the scores of the teachers
[83][70].
2.5. Coping and Regulation Processes
Three studies focused on the effects of the drama therapy interventions on coping and regulation processes
[76,78,82][68][75][76]. This category consisted of coping skills, cognitive distortions, self-control and regulation processes. The studies involved 102 children in the age of 10–19 years. Two of the studies had a pre- and post-test design
[76,82][68][75], and one study had a CCT design
[78][76]. Two studies examined the effects on self-control. The results of one study showed a positive effect on self-control rated by the adolescents and their by mentors
[78][76]. However, results of the other study did not show any effects on self-control rated by students and by their parents
[76][68]. One study examined dealing with anger, assertiveness, distrust, and coping skills (problem solving, palliative coping, social support, reassuring thought, stress, and poor coping) rated by the juvenile and rated by the mentors. These results showed a positive effect on dealing with anger, assertiveness, and on coping skills (problem solving, palliative coping, social support, reassuring thought, stress, and poor coping). The same study examined the effect on cognitive distortions (aggression, justification, physical aggression, oppositional behavior, sub assertive behavior, and negative attitude) and found a decrease in cognitive distortion, but did not find an effect on negative attitude
[78][76]. In addition, an increase in motivation for treatment was found. One study examined the effects on the attribution style in good and bad situations, but no effect was found
[82][75].
2.6. Social Identity
Three studies focused on the effects of drama therapy interventions on social identity
[80,82,83][70][75][77]. This consisted of attitude change and self-esteem. The studies involved 12 children in the age of 7–8 years
[80][77] and 128 adolescents in the age of 12–18
[82,83][70][75]. Two of the studies had a RCT design
[80[70][77],
83], and one had a pre- and post-test design
[82][75]. One study examined the effect on attitude change. The results showed a positive effect on the way the children evaluate themselves and other children. Furthermore, the results showed a positive effect on the amount of potency the children saw for themselves, other children and adults. There was no effect on attitude change regarding activity, sharing, imagination, and feelings
[80][77]. In the study examining the effect on self-esteem, no effect was found
[82,83][70][75].
2.7. Cognitive Development
Four studies focused on the effects of drama therapy intervention on cognitive development
[78,80,81,83][70][74][76][77]. This category consisted of a subset of cognitive functions and abilities: language skills, academic performance, attention deficit and cognitive structure. The studies involved 12 children in the age of 7–8
[80][77] and 229 adolescents in the age of 9–19 years
[78,81,83][70][74][76]. Three of the studies had a RCT design
[80[70][74][77],
81,83], and the other study had a CCT design
[78][76]. Two studies examined the effect on academic performance in mathematics and one study on reading and spelling. The results in one study showed a positive effect on mathematics
[83][70], and the results of the other study did not show effects on mathematics, reading or spelling
[81][74]. Two studies examined the effect on language development in terms of oral expression
[80[70][77],
83], and results showed an increase in oral expression. One study examined the effect on attention deficit as a neuropsychological outcome. The results showed a decrease in attention deficit
[78][76]. One study examined the effect on the perception of the extent to which the impairment interfered with classroom learning. The results rated by the students and by the teachers did not show an effect on the perception of the extent to which the impairment interfered with classroom learning
[83][70].
3. Outcome Drama Therapy Characteristics
3.1. Drama Therapeutic Means
The drama therapy means are the forms and techniques of drama therapy that were applied during the drama therapy sessions. Two studies mentioned
dramatic reality [76][68] as a means where children and adolescents create a fictional reality based on their imagination
[76][68] or based on personal stories
[84][71] and dramatic reality as a projective technique where the children and adolescents project inner feelings on dramatic representations
[84][71].
Three studies applied projection as a means in different forms such as
dramatic projection [75][73],
projective techniques [79][69],
symbolic play as a projective technique [82][75] where the children and adolescents project unconscious inner feelings at a safe distance
[76,82][68][75] and verbalize how they felt
[79][69].
Role playing was also mentioned as a projective technique in one study
[76][68]. This is where the children had the opportunity to empathize with the role and project their ideas about how their feelings.
Storytelling [76][68],
symbolic play [83][70] and
pairs techniques [83][70] were also mentioned as a reflective technique where the adolescents reflect on their points of view and feelings
[83][70].
Storytelling was also mentioned in three other studies. One study used storytelling as a technique to create a symbolic and safe distance from reality
[82][75]. Another study mentioned storytelling as a means that was used to share strong emotions and subsequent relief
[83][70]. One study used storytelling focusing on group play and social interaction.
In this study, movement,
voice, role play, and pantomime were used focusing on group play and social interaction
[75][73].
Four studies
[79,80,83,84][69][70][71][77] used
acting out personal stories as a means to transform these stories into alternative scenarios developed by group members
[83][70] or to express feelings
[80,84][71][77].
Three studies mentioned
improvisation [79,80,82][69][75][77] as a means where the children and adolescents adopt new roles, and explore spontaneity
[79][69], express and play out feelings
[80][77], and can play a variety of roles attuned to their needs and requests
[82][75].
One study used
role-playing games to practice perspective-taking exercises
[78][76]. One study mentioned
theatrical exercises as a means to transform the experience of adversity
[84][71].
Playing a role was mentioned by one study as a means to express the inner characteristics of the role in a way that can be understood by others
[80][77].
3.2. Drama Therapeutic Attitude
Three studies reported the therapeutic attitude
[76,79,82][68][69][75]. All of them described an adaptive approach where the drama therapists created opportunities to cooperate, build cohesion, share feelings and where the children and adolescents are accepted as being of unconditional worth. One of the studies mentioned specifically that the adaptive approach was based on the view of Carls Rogers
[82][75].
3.3. Supposed Mechanisms of Change
WResearche
rs categorized the mechanisms of change into two categories: specific drama therapeutic mechanisms of change and general mechanisms of change. Nine categories were identified reflecting specific mechanisms of change which contribute to the effectiveness of the drama therapy intervention. The first category was related to the process where
expression is stimulated in drama therapy. The second category concerned the process of sharing. The third category was the process that allows participants to
gain experiences in the drama therapy. The fourth category concerned processes in the drama therapy where participants
become aware. The fifth category was the
process of reflection. The sixth category was the process of embodying. The seventh category was the process in which participants witness others in the drama therapy. The ninth category is the process in which participants are stimulated to be creative in the drama therapy [76,82][68][75] and are stimulated to use their imagination [76,79][68][69]