dc.description.abstract | Autism spectrum disorder (ASD) is a neurodevelopmental disorder and
presents as a complex and often puzzling category of conditions. Parents of children
with ASD face a dilemma when selecting the most efficient and effective treatment for
their child. Families of children with ASD use a combination of both scientifically
validated and non-validated treatments with children with ASD. This thesis evaluates
Sensory Integration Therapy (SIT), one of the most popular non-validated treatments
for ASD, by reviewing its effectiveness and analysing variables related to parental
choice of the intervention. In addition, research is presented that compares the
effectiveness of SIT to Behavioural Intervention (BI), an empirically validated
treatment, in altering challenging behaviour and improving academic performance.
Chapter 2 conducted a systematic review on past research using SIT and
Sensory Integration techniques with children with ASD. Chapter 3 surveyed a sample
of parents or carers of children with ASD to ascertain their views on SIT and their use
of the treatment with their child. Chapters 4 and 5 conducted experimental studies to
compare the effects of SIT and BI on challenging behaviour maintained by
environmental variables and automatic reinforcement. Finally, Chapter 6 evaluated
the effects of SIT and BI on reading, language and attention repertoires.
Findings of the current thesis can be summarised as follows. A systematic
review failed to demonstrate the effectiveness of SIT for individuals with ASD, across
areas of academic achievement, task engagement, language, social interaction or
challenging behaviour. However, the survey of parents employing this therapy
reported overall positive ratings of their satisfaction with the effectiveness of SIT for
their children. The outcomes of experimental studies found that SIT was not effective
for behaviours maintained by environmental variables (e.g., escape from demand,
access to tangibles and attention). In contrast, the findings suggest that SIT was
somewhat effective in reducing behaviours maintained by automatic reinforcement,
and the Sensory Integration techniques were more effective when delivered within the
framework of a Behavioural Intervention package. In addition, evidence from the
current thesis suggests some effectiveness of SIT in increasing attention to task. The
results from the current thesis are discussed in terms of theoretical perspectives of the
findings as well as implications for future research. | en_US |