In 2 experiments, eye tracking methodology was used to assess on-line lexical, syntactic and semantic processing in autism spectrum disorder (ASD). In Experiment 1, lexical identification was examined by manipulating the frequency of target words. Both typically developed (TD) and ASD readers showed normal frequency effects, suggesting that the processes TD and ASD readers engage in to identify words are comparable. In Experiment 2, syntactic parsing and semantic interpretation requiring the on-line use of world knowledge were examined, by having participants read garden path sentences containing an ambiguous prepositional phrase. Both groups showed normal garden path effects when reading low-attached sentences and the time course of reading disruption was comparable between groups. This suggests that not only do ASD readers hold similar syntactic preferences to TD readers, but also that they use world knowledge on-line during reading. Together, these experiments demonstrate that the initial construction of sentence interpretation appears to be intact in ASD. However, the finding that ASD readers skip target words less often in Experiment 2, and take longer to read sentences during second pass for both experiments, suggests that they adopt a more cautious reading strategy and take longer to evaluate their sentence interpretation prior to making a manual response. (PsycINFO Database Record

The communication skills and styles of autistic people have been the focus of much research, but little work has explored the communication preferences of autistic adults themselves. This study examined how autistic adults prefer to communicate in multiple scenarios. Two hundred and forty-five autistic adults completed a novel questionnaire that required six communication modes to be ranked in order of preference across seven different scenarios. Participants also provided qualitative responses to further explain their rankings, and completed the Autism Quotient, the Generalised Anxiety Disorder scale and the Camouflaging Autistic Traits Questionnaire. Quantitative data indicated that email ranked highly when accessing services, seeking customer support and communicating about research. When communicating with family, friends, in employment and in education, both face-to-face and written modes (email or text message) were preferred. In the qualitative data, four main themes were identified: Not the Phone, Written Communication, Masking versus Autistic Communication and Avoiding Communication. There is a clear message that mode of communication can be either enabling or disabling for autistic people. A reliance on phone calls can create barriers to access, yet the option to adopt written forms of communication can improve accessibility. For known connections, the preference for face-to-face communication is dependent upon how close and accepting the relationship is. Lay abstract What is already known about the topic? There has been a lot of research into things like how autistic people’s communication styles are different to those of non-autistic people, especially among children. This has tended to focus on parent reports and experiments, rather than asking autistic people about their own experiences and preferences regarding communication. What does this article add? This article is the first to ask autistic adults how they prefer to communicate in different scenarios. We asked whether they preferred to use a range of methods, such email, phone calls, letters and live messaging, in scenarios from education to customer services to friends and family. When contacting unknown people or organisations, we found that generally email was preferred, and phone calls were very unpopular. However, for friends, family and people they felt comfortable with, they preferred both face-to-face and written forms of communication (e.g. email and text message). Implications for practice, research or policy The findings suggest that services should move away from a reliance on phone calls for communication. They should make sure that access to support is not dependent on the phone, and instead offer written options such as email and live messaging which are more accessible. Future research should investigate the impact of COVID-19 on autistic people’s communication preferences, as video calling has become much more commonly used and potentially combines benefits and challenges of other modes discussed in this article.

The on-line use of world knowledge during reading was examined in adults with autism spectrum disorder (ASD). Both ASD and typically developed adults read sentences that included plausible, implausible and anomalous thematic relations, as their eye movements were monitored. No group differences in the speed of detection of the anomalous violations were found, but the ASD group showed a delay in detection of implausible thematic relations. These findings suggest that there are subtle differences in the speed of world knowledge processing during reading in ASD.

Autism spectrum disorder (ASD) is neurodevelopmental condition principally characterised by impairments in social interaction and communication, and repetitive behaviours and interests. This article reviews the eye movement studies designed to investigate the underlying sampling or processing differences that might account for the principal characteristics of autism. Following a brief summary of a previous review chapter by one of the authors of the current paper, a detailed review of eye movement studies investigating various aspects of processing in autism over the last decade will be presented. The literature will be organised into sections covering different cognitive components, including language and social communication and interaction studies. The aim of the review will be to show how eye movement studies provide a very useful on-line processing measure, allowing us to account for observed differences in behavioural data (accuracy and reaction times). The subtle processing differences that eye movement data reveal in both language and social processing have the potential to impact in the everyday communication domain in autism.

LOOKING, SEEING AND BELIEVING IN AUTISM 2 Lay AbstractAdults with High Functioning Autism (ASD) viewed scenes with people in them, whilst having their eye movements recorded. The task was to indicate, using a button press, whether the pictures were normal, or in some way weird or odd. Oddities in the pictures were categorized as violations of either perceptual or social norms. Compared to a Typically Developed (TD) control group, the ASD participants were equally able to categorise the scenes as odd or normal, but they took longer to respond. The eye movement patterns showed that the ASD group made more fixations and revisits to the target areas in the odd scenes compared to the TD group.Additionally, when the ASD group first fixated the target areas in the scenes, they failed to initially detect the social oddities. These two findings have clear implications for processing difficulties in ASD for the social domain, where it is important to detect social cues on-line, and where there is little opportunity to go back and recheck possible cues in fast dynamic interactions. Autistic Spectrum Disorder (ASD) and Typically Developed (TD) adult participants had to decide whether scenes were 'odd', 'unusual' or 'weird'. All scenes contained people, with 'oddness' operationally defined as either perceptual or social. There were no group differences in accuracy, but the ASD group were slower overall to respond manually. Eye movements revealed that the ASD group made more fixations overall and more re-fixations into the target regions of the pictures, for both conditions. Importantly, as indexed by the first fixation duration the ASD group failed to 'pick up' immediately on what was 'odd' for the social violations. The propensity to 'go back' and re-fixate targets, coupled with a failure to initially detect social violations, has obvious significance for ASD in fast dynamic social communication.Key phrases: Autism Spectrum Disorder, Eye movements, On-line cognitive processing, Social and Perceptual Oddities. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 High functioning adults with ASD are similar to typically developed (TD) adults in terms of performance on pencil and paper and IQ tests, however in the social domain evidence suggests an inability to process social information in a typical fashion. Eye movement studies report unusual gaze behaviour for faces appearing on their own (Dalton et al., 2005), in social scenes or in dynamic movie clips .Research consistently reports a lack of spontaneous gaze fixation towards the eyes (Jones et al., 2008;Pelphrey et al., 2002). However, where one study reports impairments, say for face processing , another study does not ). Moreover, lack of attentional modulation for social stimuli (Bird et al., 2006) may be overridden, as when cued, attention may be allocated to faces in a more 'typical' manner (Ba...