Journal of Autism and Developmental Disorders最新文献

This study aimed to investigate the mathematical abilities of adolescents with Autism Spectrum Disorder (ASD) compared to typically developing (TD) peers, focusing on procedural thinking, arithmetic comprehension, and algebraic technique. Sixty-seven adolescents (31 with ASD, 36 TD) participated in the study. A comprehensive mathematics skills test, incorporating oral and written components, was individually administered to assess abilities across three main mathematical domains. The study employed a mixed-methods approach, combining quantitative analyses of group differences with qualitative assessments of response patterns. Significant differences were observed between ASD and TD groups across most mathematical measures, with TD adolescents generally outperforming those with ASD. Large effect sizes were noted in procedural thinking and algebraic procedures. However, no significant differences were found in word problem-solving. Within the ASD group, considerable variability was observed, with some individuals demonstrating age-appropriate mathematical abilities while others showed consistently low performance across all domains. The study highlights the complex nature of mathematical abilities in adolescents with ASD, characterized by significant group differences and within-group variability. These findings highlight the importance of individualized approaches in mathematical education for adolescents with ASD and emphasize the need for early identification and targeted interventions to address specific challenges in mathematical learning.

This study investigated the categorical perception (CP) of linguistic pitch (lexical tones) and nonlinguistic pitch (pure tones), as well as tonal production in Mandarin-speaking children with autism spectrum disorders (ASD). A total of 26 Mandarin-speaking children with ASD and 29 age-matched typically developing (TD) children were recruited for this study. The Mandarin T2-T3 contrast and corresponding pure tones with identical pitch contours were adopted to assess the nuanced pitch processing abilities of the child participants via the CP paradigm. Accordingly, tonal production was focused on T2 and T3 with analyses of the dynamic pitch contours and tonal differentiation. Mandarin-speaking children with ASD exhibited atypical CP for linguistic pitch in comparison with their TD peers. However, the categorization of linguistic pitch exceeded that of nonlinguistic pitch among the ASD participants, indicating a global over local processing pattern contrary to autistic individuals in non-tonal languages. Additionally, despite atypical pitch contours in producing T2 and T3, the ASD group showed comparable differentiable degrees of the two tones in production to the TD group. Findings of this study served as a foray into contesting current theories' claims of local bias and/or global impairment in the autistic population, prompting further inspections on individuals with different language backgrounds and stimuli processing with various complexities. Additionally, findings of this study underscore the necessity of developing tailored assessments and interventions to enhance the perception and production of complex and confusable tones, thereby improving perceptual robustness and communication skills in Mandarin-speaking children with ASD.

Awareness of autism is rising, yet social determinants of health impact ages of diagnosis, and diagnostic load. Unequal rates of diagnoses may indicate biases in the healthcare system. This study investigates six prior diagnoses (ADHD, conduct, adjustment, anxiety, mood, and intellectual disability) assigned to children who are later diagnosed with autism. The study investigates how race, sex, and geographic factors were associated with age of diagnosis and diagnostic load. A sample of 13,850 (78.16% male and 14.43% Black, with 57.95% of children living in urban regions) children aged 2-10 who were diagnosed with autism on Missouri Medicaid between 2015 and 2019 were studied. Indicated that being White, living urban, and having more prior diagnoses were associated with older age of autism diagnosis. Using logistic regressions, being White was associated with a child being more likely diagnosed with all prior diagnoses aside from intellectual disability. Being male was related to a higher likelihood of ADHD, and lower likelihood of intellectual disability. Being White was associated with higher likelihood of most diagnoses, even in urban-only samples, potentially reflecting more access to providers and office visits. Living in rural areas was also associated with earlier diagnosis and more prior diagnoses such as ADHD and conduct, which may be due to types of providers or specialists seen. Future research should look at barriers to diagnosis and the advantages and disadvantages of a higher diagnostic load.

Purpose: Autistic adults are at high risk for mental health challenges, yet there has been limited research on mental health interventions for this population. Individual differences in how thoughts and emotions are perceived may directly relate to the success of specific therapy strategies. This study examined whether alexithymia and inner thinking patterns relate to helpfulness and ease of use of mental health therapy strategies among autistic adults.

Method: Participants (n = 269 autistic adults, ages 21-77) completed questionnaires assessing alexithymia, inner thinking patterns (i.e., self-talk, verbal thinking, visual thinking), and experiences with mental health therapy strategies. Ordinal logistic regressions were used to examine associations between alexithymia, inner thinking, and perceived helpfulness and ease of use of therapy strategies.

Results: Autistic adults with greater alexithymia found cognitive strategies more difficult to use, while those with greater frequency of self-talk found them easier to use. By contrast, autistic adults with greater visual thinking found guided imagery strategies easier to use. There were no associations between alexithymia or inner thinking and perceived helpfulness or ease of use of behavioral strategies (exposure, behavioral activation), mind-body relaxation strategies (deep breathing, progressive muscle relaxation), or mindfulness meditation.

Conclusions: The findings suggest that some mental health strategies may be more difficult to implement for some autistic adults, depending on individual thinking profiles. However, alexithymia and inner thinking patterns were unrelated to the perceived helpfulness of mental health strategies. Overall, this highlights the importance of providing individualized supports and accommodations to optimize mental health therapy for autistic adults.

Autism and social anxiety (SA) share behavioral features like reduced eye contact, variable social attention, and differences in social interactions. However, the impact of the co-occurrence of these conditions (e.g., autism with co-occurring SA) on social attention remains unknown. Therefore, we evaluated whether the degree of SA characteristics in autistic youth modulated (e.g., amplified or lessened) a core hallmark feature of autism: social attention, or looking at faces. Fifty-four autistic and 35 non-autistic children and adolescents completed a gaze-contingent eye-tracking (ET) paradigm, in which faces dynamically expressed happy or fearful expressions contingent on participant eye contact. SA characteristics were assessed via standardized self- and parent-report measures. Social attention was measured by calculating the average percent looking time at the face and eye regions of each emotional expression. Autistic participants looked less at faces than non-autistic participants, and higher self-report SA was associated with less looking at eyes in both autistic and non-autistic participants. SA features affect social attention similarly in autistic and non-autistic youth, highlighting the importance of considering co-occurring psychiatric characteristics when assessing social attention and eye contact in autistic individuals.

Purpose: Hearing one's own name produces unique patterns of brain activation which triggers attention and orienting responses to the caller. Children with autism spectrum disorder (ASD) rarely orientate towards people calling their own name, but the extent to which it may facilitate processing of the following external stimuli are not yet clear.

Methods: The current study consisted of both auditory and visual stimuli. Electroencephalogram (EEG) was measured in 28 autistic and neurotypical children (aged 3-7 years) to investigate auditory event-related brain potentials (ERPs) while hearing either their own or an unfamiliar name, and subsequent visual ERPs when viewing objects after hearing them.

Results: The results demonstrated that, unlike neurotypical children, autistic children did not show enhanced P300 responses upon hearing their own name, but exhibited more negative N1 response in the left frontal region to hearing their own name than an unfamiliar name. However, both autistic and neurotypical children showed equivalent changes in N2, P3 and Late positive potential (LPP) visual ERPs when viewing objects after hearing their own name relative to an unfamiliar name.

Conclusion: These findings suggest that autistic children who do not overtly respond to their own name (characterized by a head-turn), nevertheless exhibit increased attention to visual objects in their environment after hearing it. This implies that autistic children do recognize the sound of their name as important but may not understand the social meaning of it.

The social motivation hypothesis states that people with Autism Spectrum Condition (ASC) have a diminished social motivation, that is (1) less priority in attention for objects of social importance, (2) diminished social reward, and (3) less desire to maintain and strengthen relationships. Little is known about the perception of autistic people on their social motivation. This study used semi-structured interviews to explore how eleven autistic men perceived their social motivation, behaviour, and interactions. In the interpretative phenomenological analysis, five themes were identified: (1) social network, (2) importance of social contact, (3) challenges regarding social contact, (4) conditionality of social contact, and (5) the struggle between importance, challenges and conditionality of social contact. Social motivation appeared to be a dynamic concept that varied between individuals and contexts. Most participants struggled between valuing social contact as important and the challenges they faced on a social level over the different contexts in which they participated. Even though elements of the social motivation hypothesis were recognized, the main finding was that this struggle seemed to be the source of the diminished social motivation that was observed in some of these men. Although more research is needed, the findings of this study could imply that social motivation might not be as straightforward for autistic men as described in the social motivation hypothesis.

Phonology is an important foundation of reading development; however, little is known about the neural substrates of speech sound processing and reading development in autistic children. We investigated early auditory event-related potentials (ERPs) in response to speech sounds and their association with reading ability (word recognition and reading comprehension). 56 kindergarteners (28 ASD, 28 TD) completed an ERP task using rhyming, bisyllabic pseudowords (/gibu/ and /bidu/) in an old/new design: 50% "old" and 50% "new" stimuli presented following a sensitization block of 100% "old" stimuli. Behavioral measures of reading ability were completed at kindergarten entry and exit. Results from generalized linear mixed models revealed a significant three-way interaction between stimuli ("new" vs. "old"), diagnosis (ASD vs. TD), and reading ability (for word recognition and reading comprehension) for P1 and P2 amplitude. Follow-up analyses revealed that autistic children with lower reading abilities showed greater P1 and P2 amplitudes for "new" vs. "old" stimuli, with effects ranging from marginal to significant (p's 0.04-0.07). Regression analyses revealed that old/new ERP difference scores significantly predicted later word recognition at kindergarten year-end (P1 amplitude: p = .05; P2 amplitude: p = .04), but not reading comprehension, controlling for sex and nonverbal IQ. Autistic children with poorer reading skills, specifically those with weaker word recognition abilities, show neural differences when processing speech sounds compared to autistic peers with greater reading ability and typically developing children. A better understanding of the neural basis of speech sound processing could enhance our insight into the heterogeneity in reading among individuals with ASD and guide future treatment approaches.

The current study evaluates whether college students can identify characteristics of autism as diagnostic for autism, and characteristics of other disabilities as not diagnostic for autism. This study also examines metacognitive awareness of autism knowledge, evaluating whether college students can accurately calibrate their confidence in their beliefs about autistic characteristics. 283 college students completed the Autism Symptomatology Knowledge Assessment (McMahon et al. Research in Autism Spectrum Disorders 71:101499, 2020). In this assessment, participants were presented with characteristics of autism and other disabilities and asked to identify which characteristics could be used to diagnose someone with autism. For each characteristic, participants indicated how certain they were in their response. Participants more accurately categorized characteristics of autism, particularly social interaction and communication challenges, as being consistent with an autism diagnosis. Participants had more difficulty identifying that characteristics of other disabilities, especially anxiety, ADHD, and learning disabilities, were not diagnostic for autism. For autistic characteristics, participants' confidence and accuracy were positively correlated, such that participants who responded accurately were more confident in their response than those who responded inaccurately. For other disability characteristics, confidence and accuracy were typically not correlated or inversely correlated, indicating poor metacognitive awareness. College students confuse autism with other disabilities, which may have important implications in real-world contexts. Furthermore, individuals with poor metacognitive awareness of their autism knowledge may not realize that they are confusing autism with other disabilities, such that they may not seek out additional corrective information about autism.

Lockdown imposed by the COVID 19 pandemic increased the time families spent together at home. A negative impact of the lock-down on children with autism has been reported. Few studies described the positive impact of parents' presence on the severity of their children's autism symptoms during lockdown. To describe the positive impact of the COVID-19 lockdown on the evolution of Children' Symptoms with autism and parents' emotional status and to determine which variables had a positive or negative impact on the severity of autism features in Kinshasa. From April 15 to July 15, 2020, we analyzed the evolution of core symptoms of 68 children with autism and correlated these findings with the presence of a parent at home during lockdown. We performed multivariate logistic regression to assess the factors associated to autism symptoms improvement after adjustment by sex, age at ASD diagnosis, education, parent occupation, child's occupancy time, presence of parent's depression, and presence of comorbidities and core symptoms in children. Parents reported ASD symptom improvement in 42.6% of children. Factors positively associate with ASD symptoms improvement were presence of a parent for more than 8 h per day, improvement of social communication and autonomy. In contrast, severe to moderate depression in parents and presence of main comorbidities in children were associated with more severe autistic symptoms in their children. The presence of a parent at home, improved child communication and autonomy improved autism symptoms. On the other hand, parental depression and comorbidities in children with ASD aggravated the symptoms during lockdown in Kinshasa/DRC. These findings emphasize the importance of the physical presence of parents as well as the length of time they spend with their children with ASD. In addition, they show that depressive feelings in parents and comorbidities in ASD have a negative impact in the severity of their symptoms during lockdown.