The small number of studies included in the present study limited the ability to make inferences when comparing the three models and investigating the strengths and weaknesses of each type of intervention with respect to important outcomes .
Since the outcome of ' reciprocity of social interaction towards others ' could be a dependent variable that might be context -bound to interactions with the child 's parent , we can not conclude the interventions for pre-school children with ASD have significant effects on a generalized skill to engage in reciprocal interactions with others .
However , the outcomes of ' reciprocity of social interaction towards others ' and ' parental synchrony ' may be promising targets for interventions involving pre-school children with ASD .
BACKGROUND There has an increasing number of published trials on psychosocial intervention programmes for pre-school children with autism spectrum disorder ( ASD ) .
To achieve better quality of unbiased evidence for the effectiveness of ASD interventions , it is necessary to conduct a comprehensive review that covers studies with adequate quality st and ards , such as r and omised controlled trials ( RCTs ) , and different types of intervention In this study , we categorize interventions for ASD as behavioural , social-communication focused , and multimodal developmental based on Howlin 's classification of early interventions for children with ASD .
The aim of this study was to compare these three models and investigate the strengths and weaknesses of each type of intervention and to identify the approaches that contribute to a successful outcome for children with autism .
Effects of a brief Early Start Denver model (ESDM)-based parent intervention on toddlers at risk for autism spectrum disorders: a randomized controlled trial.
OBJECTIVE This study was carried out to examine the efficacy of a 12-week , low-intensity ( 1-hour/wk of therapist contact ) , parent-delivered intervention for  toddlers at risk for autism spectrum disorders ( ASD ) aged 14 to 24 months and their families . METHOD A r and omized controlled trial involving 98 children and families was carried out in three different sites investigating the efficacy of a parent delivery of the Early Start Denver model ( P-ESDM ) , which fosters parental use of a child-centered responsive interaction style that embeds many teaching opportunities into play , compared to community treatment as usual . Assessment s were completed at baseline and 12 weeks later , immediately after the end of parent coaching sessions . RESULTS There was no effect of group assignment on parent-child interaction characteristics or on any child outcomes . Both groups of parents improved interaction skills , and both groups of children demonstrated progress . Parents receiving P-ESDM demonstrated significantly stronger working alliances with their therapists than did the community group . Children in the community group received significantly more intervention hours than those in the P-ESDM group . For the group as a whole , both younger child age at the start of intervention and a greater number of intervention hours were positively related to the degree of improvement in children 's behavior for most variables . CONCLUSIONS Parent-implemented intervention studies for early ASD thus far have not demonstrated the large effects seen in intensive-treatment studies . Evidence that both younger age and more intervention hours positively affect developmental rates has implication s for clinical practice , service delivery , and public policy
The small number of studies included in the present study limited the ability to make inferences when comparing the three models and investigating the strengths and weaknesses of each type of intervention with respect to important outcomes .
Since the outcome of ' reciprocity of social interaction towards others ' could be a dependent variable that might be context -bound to interactions with the child 's parent , we can not conclude the interventions for pre-school children with ASD have significant effects on a generalized skill to engage in reciprocal interactions with others .
However , the outcomes of ' reciprocity of social interaction towards others ' and ' parental synchrony ' may be promising targets for interventions involving pre-school children with ASD .
BACKGROUND There has an increasing number of published trials on psychosocial intervention programmes for pre-school children with autism spectrum disorder ( ASD ) .
To achieve better quality of unbiased evidence for the effectiveness of ASD interventions , it is necessary to conduct a comprehensive review that covers studies with adequate quality st and ards , such as r and omised controlled trials ( RCTs ) , and different types of intervention In this study , we categorize interventions for ASD as behavioural , social-communication focused , and multimodal developmental based on Howlin 's classification of early interventions for children with ASD .
The aim of this study was to compare these three models and investigate the strengths and weaknesses of each type of intervention and to identify the approaches that contribute to a successful outcome for children with autism .