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Andrew Videos Whitehouse Watch and listen to Andrew PhD Deputy Director (Research); Angela Wright Bennett Professor of Autism Research at The Kids

This study aimed to identify guiding principles to underpin assessment and diagnosis of autism to improve the quality, consistency and accuracy of services provided to individuals and their families. An online survey and focus groups were used to capture community perspectives of members of the Australian autistic and autism communities.

Alexithymia—a trait characterized by difficulties in emotion processing—is of high interest in the autism field. However, the lack of validated alexithymia measures for autistic individuals limits progress. This study aimed to address this gap by examining the psychometric properties of the Perth Alexithymia Questionnaire (PAQ) across autistic and non-autistic samples. Using the PAQ, we investigated how alexithymia manifests in autistic individuals and its links with poor mental health outcomes (anxiety).

Harmonizing the scores obtained by different instruments that measure the same construct enable researchers to combine them in one analysis. An important step in harmonization is checking whether there is measurement invariance across populations.

Sex-specific developmental differences in brain structure have been documented in older children and adolescents, with females generally showing smaller overall brain volumes and earlier peak ages than males. However, sex differences in gray matter structural development in early childhood are less studied. We characterized sex-specific trajectories of gray matter volume development in children aged 2–8 years.  

Early intervention offers the potential to mitigate adult mental illness; however, trials spanning decades present significant challenges, necessitating predictive early markers useable in trial settings. We hypothesised that parent evaluation using the child behaviour checklist (CBCL) total problem score at age two years predicted adult depressive and anxious symptoms and explored other potential parent ratings.

Caregiver-mediated supports in general have shown mixed evidence for enhancing language outcomes in infants at higher likelihood of autism. While caregivers play a substantial role in caregiver-mediated supports, little is known about whether caregivers' own subclinical autistic features - known as broader autism phenotype - may moderate infant language outcomes. 

Autism spectrum disorder (ASD), a neurodevelopmental condition characterised by social and communication differences, is complex and aetiologically heterogeneous. Untargeted metabolomics is emerging as a tool in screening for biochemical abnormalities. This research was conducted using the Australian Autism Biobank resource and involved analysis of plasma metabolites to characterise metabolite differences between autistic children and controls.

Autistic children have an increased likelihood of anxiety, but more research is needed on the characteristics that predict various types of anxiety in this population. 

Although up to 89% of autistic children experience feeding difficulties, little is known about the impact of these difficulties on mealtime participation. The aim of this study was to explore the impact of feeding difficulties on the mealtime participation of autistic children and their families based on caregiver experiences.