While there is some evidence that ToM , or a precursor skill , can be taught to people with ASD , there is little evidence of maintenance of that skill , generalisation to other setting s , or developmental effects on related skills .
It is possible that the continuing refinement of the ToM model will lead to better interventions which have a greater impact on development than those investigated to date
BACKGROUND The ' Theory of Mind ' ( ToM ) model suggests that people with autism spectrum disorder ( ASD ) have a profound difficulty underst and ing the minds of other people - their emotions , feelings , beliefs , and thoughts .
As an explanation for some of the characteristic social and communication behaviours of people with ASD , this model has had a significant influence on research and practice .
It implies that successful interventions to teach ToM could , in turn , have far-reaching effects on behaviours and outcome .
OBJECTIVES To review the efficacy of interventions based on the ToM model for individuals with ASD .
A randomized controlled trial of Hanen's 'More Than Words' in toddlers with early autism symptoms.
BACKGROUND This r and omized controlled trial compared Hanen 's ' More than Words ' ( HMTW ) , a parent-implemented intervention , to a ' business as usual ' control group . METHODS Sixty-two children ( 51 boys and 11 girls ; M age = 20 months ; SD = 2.6 ) who met criteria for autism spectrum disorders ( ASD ) and their parents participated in the study . The HMTW intervention was provided over 3.5 months . There were three measurement periods : prior to r and omization ( Time 1 ) and at 5 and 9 months post enrollment ( Times 2 and 3 ) . Children 's communication and parental responsivity were measured at each time point . Children 's object interest , a putative moderator , was measured at Time 1 . RESULTS There were no main effects of the HMTW intervention on either parental responsivity or children 's communication . However , the effects on residualized gains in parental responsivity from Time 1 to both Times 2 and 3 yielded noteworthy effect sizes ( Glass 's Δ = .71 , .50 respectively ) . In contrast , there were treatment effects on child communication gains to Time 3 that were moderated by children 's Time 1 object interest . Children with lower levels of Time 1 object interest exhibited facilitated growth in communication ; children with higher levels of object interest exhibited growth attenuation . CONCLUSIONS The HMTW intervention showed differential effects on child communication depending on a baseline child factor . HMTW facilitated communication in children with lower levels of Time 1 object interest . Parents of children who evidence higher object interest  may require greater support to implement the HMTW strategies , or may require different strategies than those provided by the HMTW curriculum
While there is some evidence that ToM , or a precursor skill , can be taught to people with ASD , there is little evidence of maintenance of that skill , generalisation to other setting s , or developmental effects on related skills .
It is possible that the continuing refinement of the ToM model will lead to better interventions which have a greater impact on development than those investigated to date
BACKGROUND The ' Theory of Mind ' ( ToM ) model suggests that people with autism spectrum disorder ( ASD ) have a profound difficulty underst and ing the minds of other people - their emotions , feelings , beliefs , and thoughts .
As an explanation for some of the characteristic social and communication behaviours of people with ASD , this model has had a significant influence on research and practice .
It implies that successful interventions to teach ToM could , in turn , have far-reaching effects on behaviours and outcome .
OBJECTIVES To review the efficacy of interventions based on the ToM model for individuals with ASD .