Why Are Autistic People More Likely to Experience Suicidal Thoughts? Applying the Integrated Motivational-Volitional Model with Autistic Adults.

Background: Autistic people are at considerably greater risk of suicidality than non-autistic people, and the reasons behind this are not fully understood. Current suicide theories may be useful to help further our understanding of the mechanisms behind autistic suicidality. We aimed to test the key predictors of suicidal ideation-defeat and entrapment-as described in the integrated motivational-volitional (IMV) model of suicide behavior, in an autistic group. We also looked to extend the IMV model by including autism-related constructs of camouflaging and intolerance of uncertainty (IU). Methods: We recruited 374 autistic adults from the community (female 42.5%; 18-63 years of age), who completed a cross-sectional online survey between August 2020 and January 2021. We collected data on lifetime suicidality, depression symptoms, defeat, entrapment, camouflaging, and IU. Results: We found that entrapment significantly mediated the relationship between defeat and suicidal ideation. Camouflaging and IU were not found to moderate this pathway but were found to be significantly associated with suicidal ideation. Conclusions: We found that entrapment mediates the relationship between defeat and suicidality in autistic adults. This is consistent with the predictions in the motivational phase of the IMV model of suicidal behavior, suggesting that this model is useful for understanding autistic suicidality. We did not find evidence that camouflaging and IU act as moderators within the mediated model. Nevertheless, there is some evidence that camouflaging and IU are worthwhile constructs to be aware of for future work researching autistic suicidality.

Why is this an important issue? Autistic people are more likely to think about and die by suicide than non-autistic people. Understanding why autistic people experience suicidal thoughts and behaviors could help develop better suicide prevention strategies. What was the purpose of this study? We wanted to examine how well an existing model for understanding suicide applies to autistic people. We explored the integrated motivational­volitional (IMV) model of suicide. This model suggests that feeling entrapped in an impossible situation with no escape route and feeling defeated by life increase the risk of experiencing suicidal thoughts in non-autistic people. We wanted to know whether feeling entrapped and defeated are also relevant for autistic people experiencing suicidal thoughts. We also wanted to observe whether the IMV model could be tailored to include experiences that are more relevant to autistic people. Therefore, we also looked at camouflaging, or masking autistic traits to fit in social situations, and intolerance of uncertainty as potential contributors to suicidal thoughts in autistic adults. What did the researchers do? We recruited 374 autistic adults (aged 18­63 years) to complete online questionnaires measuring the feelings of defeat, entrapment, camouflaging, intolerance of uncertainty, and suicidal thoughts and behaviors. What were the results of this study? Our results suggest that autistic adults who feel defeated also tend to feel entrapped and suicidal. These results support the IMV model in autistic adults. Autistic adults who reported high levels of camouflaging or intolerance of uncertainty were more likely to score highly on the measure of suicidal thoughts and behaviors. However, camouflaging and intolerance of uncertainty alone were not able to predict suicidal thoughts in autistic adults. What do these findings add to what was already known? Our study is the first to explore this well-supported model of suicide in autistic adults. Our findings provide some insight into some of the reasons underpinning suicidality in autistic adults. This is important as lots of previous research has focused on what the problem is, that is, reporting rates of suicidal thoughts and behaviors. Our study also identifies a number of questions to pursue in future work and shows that it is important for researchers to include experiences that are relevant and important to autistic adults. What are the potential weaknesses of this study? Data were collected at one time point, and therefore, it is not possible to comment on causal relationships across the information collected. We did not ask participants to confirm their diagnosis or complete an autism screening tool. This was driven by a wish to respect self-identification as well as in response to feedback on completing screening tools. The questionnaires we used were not all developed or tested for use in autistic groups. We did not measure socioeconomic status, which is commonly associated with suicide risk. How will these findings help autistic adults now or in the future? Understanding why autistic people are at risk of suicide is important for informing clinical approaches to care and support as well as informing suicide prevention strategies. This study expands the current understanding of suicide in autism and provides further avenues for future research to build upon and broaden the evidence base.

Prevention and Reduction of Anxiety in Autistic Preschoolers Through an Autism-Specific Parent-Mediated Intervention: A Pilot Randomised Controlled Trial Evaluating Short and Longer Term Outcomes.

Anxiety is a common co-occurring condition for autistic preschoolers. Whilst there has been extensive research evaluating anxiety prevention/reduction interventions for neurotypical preschoolers, such research is limited for autistic children. Fifty-seven parents of autistic 4-5-year olds, with varying levels of anxiety, participated in a randomised controlled trial of an autism-specific, parent-mediated intervention (CLK-CUES) to prevent or reduce anxiety in autistic preschoolers. Baseline, short-term (post-intervention) and longer term (12 months follow-up) assessments included child anxiety (ASC-ASD-P and PAS-R), intolerance of uncertainty, and parent well-being. (Trial registration ACTRN12620001322921). There were no reports of harmful effects of the intervention or trial. Linear mixed models show a significant group x time interaction for ASC-ASD-P Total score and the Uncertainty subscale with medium and large effect sizes. Post-hoc analyses show a significant decline for only the intervention group in anxiety (specifically, anxiety around uncertainty) from pre-post intervention, maintained at one year follow-up. There was no change on the PAS-R or other ASC-ASD-P subscales. CLK-CUES shows promise as a way to prevent and reduce anxiety in young autistic children, specifically anxiety related to uncertainty. Trials with larger samples are warranted. Findings also highlight the importance of using measures designed for autistic children.

Feasibility and acceptability of autism adapted safety plans: an external pilot randomised controlled trial.

Background: Autistic people are a high-risk group for self-harm and suicide. There are no evidence-based suicide prevention interventions developed specifically for autistic people. We undertook a pilot feasibility randomised controlled trial of autism adapted safety plans (AASP) to reduce self-harm and suicide for autistic people. Methods: This study took place in the United Kingdom and followed a randomised, two-arm, controlled design. Autistic adults (n = 53, mean age = 39, gender = 49% female, 29% not male or female) were recruited via third sector organisations and self-referral between 11.8.21 and 19.10.22. Participants were randomised without stratification to usual care with or without AASP. The AASP was completed by the autistic adults together with someone trained to support them. Research staff who completed follow-up assessments were blind to participant allocation. Primary outcomes were feasibility and acceptability. Participants were assessed at baseline, 1 and 6 months. Primary data were analysed under the intention to treat principle. Study protocol is published. The trial is closed to new participants. This study is registered with the ISRCTN registry, ISRCTN70594445. Findings: 53 participants consented, 49 were randomised to either AASP with usual care (n = 25) or usual care (n = 24). 68% of participants in the AASP arm were satisfied with the AASP and 41% rated it as useable. Feedback on the AASP and research methods were positive with suggested adaptations to some outcome measures. Retention and completion of outcomes measures in both arms was excellent, as was fidelity of delivery of the AASP. Interpretation: Study progression criteria were met, suggesting that the parameters of a future definitive trial of clinical and cost effectiveness of AASP to reduce self-harm and suicide in autistic adults are achievable, with minor recommended adaptions to outcome measures and AASP. Future research should explore the use of AASP in routine clinical practice. Funding: This study is funded by the NIHR [Public Health Research Programme (NIHR129196)].

A Measurement Invariance Analysis of the Anxiety Scale for Autism-Adults in a Sample of Autistic and Non-Autistic Men and Women.

The Anxiety Scale for Autism-Adults (ASA-A) captures the autistic anxiety experience, but we do not know whether it is structurally equivalent for men and women, or non-autistic people. Measurement invariance analysis considered gender and diagnostic status (342 cis-gender autistic men (N = 105) and women (N = 237), 316 cis-gender non-autistic men (N = 104) and women (N = 212)). Strict invariance was achieved between autistic men and women and between non-autistic men and women, but the ASA-A structure is quantitatively different in autistic compared to non-autistic adults. Therefore, this tool cannot be used to directly compare anxiety between these groups. Autistic women scored significantly higher on the ASA-A than autistic men and Uncertainty was the highest scoring factor for autistic participants. Future research should include alternative gender identities.

The development of the Helping your Anxious Child programme: a parent-mediated group intervention for parents of autistic children in South Asia.

Autistic children are at increased risk of experiencing a range of mental health difficulties, including anxiety. A number of intervention programmes are now available in high-income countries to support autistic children. However, to date there are no evidence-based interventions to support families of such children in South Asia. Based on consultations with clinicians, researchers and parents in Bangladesh and Sri Lanka, we developed a culturally tailored two-session skills-based group programme for parents whose autistic children present with anxiety. This paper describes the process of creating this programme, to be delivered by mental health professionals.

Exploring the mediating effect of camouflaging and the moderating effect of autistic identity on the relationship between autistic traits and mental wellbeing.

Mental health difficulties are prevalent among autistic adults. Camouflaging (behaving differently to fit in) may be a mechanism by which autistic traits and mental health difficulties relate to each other, but little research has considered the role of different facets of camouflaging. Additionally, autistic identity might buffer against camouflaging and mental health difficulties. This research aims to explore the mediating effects of camouflaging behaviours on the relationship between autistic traits and both positive and negative mental wellbeing, as well as how autistic identity might moderate the relationship between autistic traits and camouflaging, and also mental health. Data were available for 627 autistic adults, recruited through volunteer databases and social media. Participants completed measures of autistic traits, anxiety, depression, positive wellbeing, camouflaging behaviours (compensating for difficulties, masking, and assimilating/putting on an act) and autistic identity. Mediation and moderated mediation models were tested, applying 95% bootstrapped CIs (10,000 resamples) and including age, gender and diagnosis as covariates. There were no significant direct effects between autistic traits and mental wellbeing. Assimilation was a significant mediator of all mental wellbeing measures, and compensation was a significant mediator of positive wellbeing only. Autistic identity was not a significant moderator. Assimilation and compensation should be considered when offering psychological interventions to support mental wellbeing of autistic people. Additional research into external drivers of camouflaging (e.g. stigma) and mechanisms by which camouflaging impacts mental wellbeing, such as autonomy, authenticity, skill mastery and community, may identify other areas of support. Concurrently, societal change is necessary to reduce the need to camouflage.

A Pilot Randomised Control Trial Exploring the Feasibility and Acceptability of Delivering a Personalised Modular Psychological Intervention for Anxiety Experienced by Autistic Adults: Personalised Anxiety Treatment-Autism (PAT-A).

Anxiety is commonly experienced by autistic people and impacts on quality of life and social participation. New anxiety interventions are required to effectively meet the needs of autistic people. Personalised Anxiety Treatment-Autism (PAT-A©) is a bespoke, modular approach to treating anxiety in up to 12 sessions. This study explored the feasibility and acceptability of delivering PAT-A© in the UK National Health Service (NHS). A single-blind randomised controlled trial design. Thirty-four autistic adults were recruited via clinical services and randomised to receive either PAT-A© or enhanced treatment as usual (CCSP). Outcome assessments relating to anxiety, quality of life and related constructs were completed at baseline, immediately post intervention; and at 3 and 12 months. Seventy-one percent of the PAT-A© group and 65% of the CCSP met diagnostic threshold for at least three anxiety disorders. Retention was good across both groups, with 82% (N = 14/17) completing the full course of PAT-A© and 71% (N = 12/17) attending both psychoeducational sessions in CCSP. 94% in PAT-A© and 82% in CCSP completed some follow up assessment 3 months post-intervention. Thematic analysis of interview data revealed that many participants valued the personalised approach, developed transferable skills and experienced positive changes to their anxiety. Participants were willing to be recruited and randomised, PAT-A© was feasible to deliver in the NHS and the trial methods and materials were acceptable. Our findings indicate that a fully powered clinical and cost-effectiveness trial of PAT-A© is warranted.

Is camouflaging autistic traits associated with defeat, entrapment, and lifetime suicidal thoughts? Expanding the Integrated Motivational Volitional Model of Suicide.

INTRODUCTION: The current study explored whether camouflaging autistic traits is associated with defeat and entrapment and lifetime suicidal thoughts, as predicted by the Integrated Volitional Model of Suicide (IMV model). METHODS: 180 UK undergraduate students (76.7% female 18-67 years) completed a cross-sectional online survey from February 5 to March 23, 2020, including self-report measures of defeat and entrapment (SDES), autistic traits (AQ-10), depression (PHQ-9), anxiety (GAD-7), camouflaging autistic traits (CAT-Q), and lifetime suicidal thoughts and behaviors (SBQ-R item 1). RESULTS: After controlling for age, gender, current depression, and anxiety symptoms, autistic traits accounted for significantly more of the variance in defeat and entrapment (1.1%), and camouflaging accounted for a further 3.2% of the variance. The association between autistic traits and lifetime suicidality was significantly mediated by camouflaging, defeat, and entrapment. After controlling for age, gender, current depression, and anxiety symptoms, defeat and entrapment (but not camouflaging) accounted for significantly more variance in lifetime suicidal thoughts. The interaction between camouflaging, defeat and entrapment predicted significantly less variance in lifetime suicidal thoughts than either variable alone. CONCLUSION: Results suggest that camouflaging autistic traits is a transdiagnostic risk factor for lifetime suicidality, relevant to the defeat and entrapment constructs of the IMV model.

Lived experiences of depression in autistic children and adolescents: A qualitative study on child and parent perspectives.

BACKGROUND: Depression is highly prevalent in autistic children and adolescents. Despite this, little is known about the nature of the autistic child's subjective experience of depression and the impact of depression on their lives. METHODS: We therefore conducted a qualitative study using thematic analysis with 7 autistic children and adolescents and their parents to identify common themes and individual differences. All children had previously experienced at least one depressive episode. RESULTS: Six main themes were identified: (1) Autism related experiences; (2) Difficulties with peer relationships; (3) Co-occurring relationships between anxiety and depression; (4) Impactful pessimism and anhedonia; (5) Impactful difficulties with focus and concentration and (6) Feelings of irritability, including aggressive behaviours. Parent's accounts of their children's experience of depression mirrored the child's perspective. Novel findings included reports of depression related restriction of diet variety and masking of mental health difficulties. Children and parents linked being autistic and developing depression, referring to the difficulties of being autistic in a complex, neurotypical world. CONCLUSIONS: These results highlight key challenges that autistic children and their families experience, calling for increased awareness of the impact of depression on autistic young people.

A Parent-Mediated Anxiety Intervention Specifically Tailored for Autistic Preschoolers: A Pilot Study.

IMPORTANCE: Autistic children experience reduced participation in life activities. One factor that may contribute to their reduced levels of participation is anxiety, which is identified at higher rates among young autistic children than among their neurotypical peers. Anxiety is also strongly associated with sensory overresponsivity and has a considerable impact on daily functioning. OBJECTIVE: To determine the feasibility, acceptability, and usefulness of a small-group, parent-mediated intervention to prevent and reduce anxiety. DESIGN: Pre-post. SETTING: University research center. PARTICIPANTS: Three parents of autistic children (ages 4-7 yr). OUTCOMES AND MEASURES: Parents completed a six-session group training program. Parents completed an anxiety scale for their child before and after parent training. At the end of training, parents participated in a focus group and were interviewed 4 mo after training. RESULTS: Positively received aspects of the intervention were the benefits of a small group, composed of parents of autistic children, run by a facilitator with expertise in autism and anxiety. Parents gained knowledge, resulting in "taking a different approach" with their child and "seeing an interplay between anxiety and autism." After the intervention, parents reported a reduction in children's reported anxiety levels. CONCLUSIONS AND RELEVANCE: Knowledge of autism and anxiety acquired during a parent-mediated group increased parents' understanding of their child's behaviors and assisted them in supporting their child's participation. Further research, including larger studies, is required to determine the effectiveness of this intervention. What This Article Adds: The findings from this research provide preliminary support for the adaptation of an existing parent intervention (Cool Little Kids) to reduce anxiety among autistic children. Parents reported an increased awareness and understanding of anxiety and of the interplay between anxiety and autistic traits. Positionality Statement: This article uses the identity-first language autistic people. This nonableist language describes their strengths and abilities and is a conscious decision. This language is favored by autistic communities and self-advocates and has been adopted by health care professionals and researchers (Bottema-Beutel et al., 2021; Kenny et al., 2016).

Adapted suicide safety plans to address self-harm, suicidal ideation, and suicide behaviours in autistic adults: protocol for a pilot randomised controlled trial.

BACKGROUND: Suicide prevention is a national priority for the UK government. Autistic people are at greater risk of experiencing self-harm and suicidal thoughts and behaviours than the general population. Safety plans are widely used in suicide prevention but have not yet been designed with and for autistic people. We developed the first safety plan specifically targeting suicidality in autistic adults: the Autism Adapted Safety Plan (AASP). It consists of a prioritised list of hierarchical steps that can be used prior to or during a crisis to mitigate risk of self-harm and suicidal behaviour. This is a pilot study that aims to assess the feasibility and acceptability of the AASPs and the research processes, including the response rates, potential barriers and reach of AASPs, methods of recruitment, what comprises usual care, and economic evaluation methods/tools. METHODS: This is an external pilot randomised controlled trial of a suicide prevention tool aimed at mitigating the risk of self-harm and suicidal behaviour in autistic adults: AASPs. Participants will be assessed at baseline and followed up 1 month and 6 months later. Assessments include questions about self-harm, suicidality, service use, and their experience of the AASP/taking part in the study. Autistic adults who have a clinical autism diagnosis and self-reported history of self-harm, suicidal thoughts, or suicidal behaviours within the last 6 months will be invited to take part in the study. Informed consent will be obtained. Participants will be recruited via community and third sector services (including community settings, autism charities, and mental health charities). They may also "self-refer" into the study through social media recruitment and word of mouth. Ninety participants will be randomised to either develop an AASP or receive their usual care in a 1:1 ratio. DISCUSSION: The present study will provide an evaluation of the suitability of the processes that would be undertaken in a larger definitive study, including recruitment, randomisation, methods, questionnaires, outcome measures, treatment, and follow-up assessments. TRIAL REGISTRATION: ISRCTN70594445, Protocol v4: 8/2/22.

The role of anxiety and depression in suicidal thoughts for autistic and non-autistic people: A theory-driven network analysis.

BACKGROUND: Autistic adults experience more frequent suicidal thoughts and mental health difficulties than non-autistic adults, but research has yet to explain how these experiences are connected. This study explored how anxiety and depression contribute to suicidal thoughts according to the Interpersonal Theory of Suicide for autistic and non-autistic adults. METHODS: Participants (autistic adults n = 463, 61% female; non-autistic n = 342, 64% female) completed online measures of anxiety, depression, thwarted belonging, and perceived burdensomeness. Network analysis explored whether: (i) being autistic is a risk marker for suicide; and (ii) pathways to suicidal thoughts are consistent for autistic and non-autistic adults. RESULTS: Being autistic connected closely with feeling like an outsider, anxiety, and movement, which connected to suicidal thoughts through somatic experiences, low mood, and burdensomeness. Networks were largely consistent for autistic and non-autistic people, but connections from mood symptoms to somatic and thwarted belonging experiences were absent for autistic adults. CONCLUSION: Autistic people experience more life stressors than non-autistic people leading to reduced coping, low mood, and suicidal thoughts. Promoting belonging, reducing anxiety, and understanding the role of movement could inform suicide prevention for autistic people. Research should accurately capture autistic lived experience when modeling suicide to ensure suicide prevention meets autistic needs.

Coping with uncertainty in everyday situations (CUES©) to address intolerance of uncertainty in autistic children: an intervention feasibility trial.

BACKGROUND: Anxiety related to uncertainty is common in autism. Coping with Uncertainty in Everyday Situations (CUES©) is a parent-mediated group intervention aiming to increase autistic children's tolerance to uncertain situations. A pilot study was conducted to test its feasibility and acceptability. METHODS: Parents of 50 autistic children were randomised to receive CUES© or enhanced services as usual. RESULTS: All children met the clinical threshold for at least one anxiety disorder. Of the 26 participants randomised to CUES©, 72% attended 4-8 sessions. Parents and therapists reported they found CUES© useful and acceptable. CONCLUSIONS: Families were willing to be recruited and randomised, the format/content was feasible to deliver, and the outcome measures were acceptable. CUES© should be evaluated in a clinical and cost effectiveness randomised controlled trial.

Understanding the heterogeneity of anxiety in autistic youth: A person-centered approach.

The present study aimed to examine anxiety profiles among children and adolescents on the autism spectrum. It further aimed to characterize the association between the identified anxiety profiles and key clinical and developmental variables. The Spence Children's Anxiety Scale-Parent Version (SCAS-P) data from a large international pooled sample of 870 caregivers of autistic children and adolescents (Mage  = 11.6 years, SDage  = 2.77; 107 females) was used. Latent profile analysis identified a three-anxiety profile solution exhibiting high entropy (0.80) and high latent profile probabilities, with good classification accuracy. Identified profiles fell along the severity spectrum and were named as the mild (n = 498), moderate (n = 272) and severe (n = 100) anxiety profiles. There were no statistically significant differences between the three anxiety profiles in terms of sex distribution. Participants in the mild profile were significantly younger than those in the severe profile, had significantly fewer social communication difficulties than youth in the moderate anxiety profile group and had significantly fewer restricted and repetitive behaviors and lower cognitive functioning scores compared to participants in moderate and severe anxiety profiles. This is the first study to move beyond identifying associations and group-level differences to exploring and identifying characteristics of anxiety-based subgroups at an individual level that differ on key clinical and developmental variables. The subgroups identified in this study are a preliminary, yet important, first step towards informing future assessment and individualized interventions aiming to support young people on the autism spectrum to reduce and manage anxiety. LAY SUMMARY: This study tried to understand if there are subgroups of autistic young people who may have similar anxiety profiles. We found that we could meaningfully group young people into three groups based on how severe the anxiety symptoms their caregivers reported were: a group with low levels of anxiety, those with moderate anxiety, and those with more severe anxiety. We also found that the young people in the mild group were younger, had fewer autism traits and lower levels of intellectual functioning than young people in the other two groups.

Autism and autistic traits in those who died by suicide in England.

BACKGROUND: Autism and autistic traits are risk factors for suicidal behaviour. AIMS: To explore the prevalence of autism (diagnosed and undiagnosed) in those who died by suicide, and identify risk factors for suicide in this group. METHOD: Stage 1: 372 coroners' inquest records, covering the period 1 January 2014 to 31 December 2017 from two regions of England, were analysed for evidence that the person who died had diagnosed autism or undiagnosed possible autism (elevated autistic traits), and identified risk markers. Stage 2: 29 follow-up interviews with the next of kin of those who died gathered further evidence of autism and autistic traits using validated autism screening and diagnostic tools. RESULTS: Stage 1: evidence of autism (10.8%) was significantly higher in those who died by suicide than the 1.1% prevalence expected in the UK general alive population (odds ratio (OR) = 11.08, 95% CI 3.92-31.31). Stage 2: 5 (17.2%) of the follow-up sample had evidence of autism identified from the coroners' records in stage 1. We identified evidence of undiagnosed possible autism in an additional 7 (24.1%) individuals, giving a total of 12 (41.4%); significantly higher than expected in the general alive population (1.1%) (OR = 19.76, 95% CI 2.36-165.84). Characteristics of those who died were largely similar regardless of evidence of autism, with groups experiencing a comparably high number of multiple risk markers before they died. CONCLUSIONS: Elevated autistic traits are significantly over-represented in those who die by suicide.

The Mediating Effects of Alexithymia, Intolerance of Uncertainty, and Anxiety on the Relationship Between Sensory Processing Differences and Restricted and Repetitive Behaviours in Autistic Adults.

Distress caused by sensory processing differences for autistic individuals may be reduced by repetitive behaviours (RRB), including repetitive motor (RMB) and insistence on sameness (ISB) behaviours. Intolerance of uncertainty (IU) and anxiety mediate the relationship between sensory processing and RRB in autistic children. We replicated this model in autistic adults, extending it to include alexithymia. Serial mediation, using data from 426 autistic adults, identified significant direct effects from sensory processing to RMB and ISB, and indirect effects through alexithymia-IU-anxiety for RMB, and IU alone, and alexithymia-IU for ISB. Different mechanisms may underpin RMB and ISB. Alexithymia alongside, IU and anxiety, should be considered when understanding the relationship between sensory processing and RRB, and when offering interventions to support autistic people.

Re: Caron et al., 2021, sociocultural context and autistics quality of life: A comparison between Quebec and France.

LAY ABSTRACT: This letter to the editors discusses the use of the ASQoL for research with autistic adults. The autism quality of life measure was developed for use alongside two existing measures of quality of life developed by the World Health Organization. It was not developed as a questionnaire to be used in its own. The letter raises some concerns about the use of the autism quality of life measure as a standalone measure in a recent study by Caron et al., published in Autism.

Caregiver perspectives on the impact of uncertainty on the everyday lives of autistic children and their families.

LAY ABSTRACT: Anxiety is common in autistic children. Research shows that this may be related to intolerance of uncertainty, which is a tendency to react negatively to uncertain situations. Understanding when, why and how autistic children respond to uncertainty is important in the development of anxiety programmes. We asked 53 (including 3 dyads) parents of autistic children about the types of uncertain situations that cause difficulties for their child and how uncertainty impacts on daily life for them and their families. We found that uncertain situations made autistic children and their families feel sad, worried, frustrated and angry through the themes: child's reactions to uncertainty, trying to reduce uncertainty, the impact of difficulties with uncertainty, the impact of uncertainty on parenting and the impact on parents. There are lots of situations that are anxiety provoking for autistic children because of uncertainty, such as school. Programmes to reduce anxiety and increase autistic children's ability to cope with everyday uncertain situations could improve quality of life for autistic children and their families.

Sensory Sensitivity and Intolerance of Uncertainty Influence Anxiety in Autistic Adults.

Several models of anxiety in autistic adults have focused on the role of intolerance of uncertainty which has biological and evolutionary bases, as a cognitive explanation for the high prevalence of anxiety in autism. This framework suggests that all people are born with a healthy level of intolerance of uncertainty, and as we develop, this intolerance is lessened as we learn when situations are safe and begin to understand and manage the uncertainty. This process of learning about managing uncertainty does not happen in the same way in those who are high in autistic traits, which could be the reason for the high levels of anxiety symptoms commonly seen in this population. We examined archival data of 199 non-autistic and 55 autistic adults from prior studies in which we collected self-report measures of autistic traits, intolerance of uncertainty, sensory processing, and anxiety. We conducted two path analyses to examine the role of intolerance of uncertainty in anxiety in autistic adults. The first model tested the idea that intolerance of uncertainty, an evolutionary phenomenon common for all people, could explain some of the cognitive aspects of anxiety in autism. The second model suggests that primary neurodevelopmental differences associated with autistic traits underlie the sensory sensitivity and sensory seeking behaviors, which in turn increase intolerance of uncertainty and subsequent anxiety. We found that the "neurodevelopmental" model had better model fit than the "evolutionary stress" model, suggesting that the neurodevelopmental impact of higher levels of autistic traits could moderate a non-autistic trajectory of learning to manage uncertainty as children develop and understand that uncertainty is common and acceptable.

Re: Caron et al. (2021) sociocultural context and autistics quality of life: A comparison between Quebec and France.

The purpose of this letter to the editors is to highlight to the readership of Autism the recommended use of the Autism Quality of Life measure for research with autistic adults. The Autism Quality of Life was developed for use alongside the WHOQoL-BREF and WHO Disabilities module. The letter raises some concerns about the use of the Autism Quality of Life as a stand-alone measure in a recent study by Caron et al. published in Autism.