Visual working memory and sensory processing in autistic children.

While atypical sensory processing is one of the more ubiquitous symptoms in autism spectrum disorder, the exact nature of these sensory issues remains unclear, with different studies showing either enhanced or deficient sensory processing. Using a well-established continuous cued-recall task that assesses visual working memory, the current study provides novel evidence reconciling these apparently discrepant findings. Autistic children exhibited perceptual advantages in both likelihood of recall and recall precision relative to their typically-developed peers. When autistic children did make errors, however, they showed a higher probability of erroneously binding a given colour with the incorrect spatial location. These data align with neural-architecture models for feature binding in visual working memory, suggesting that atypical population-level neural noise in the report dimension (colour) and cue dimension (spatial location) may drive both the increase in probability of recall and precision of colour recall as well as the increase in proportion of binding errors when making an error, respectively. These changes are likely to impact core symptomatology associated with autism, as perceptual binding and working memory play significant roles in higher-order tasks, such as communication.

A pupillometry study of multisensory social and linguistic processing in autism and typical development.

Autism spectrum disorder is a neurodevelopmental disorder that is characterized by impairments in social communication, restricted interests, and repetitive behaviors. Many studies have demonstrated atypical responses to audiovisual sensory inputs, particularly those containing sociolinguistic information. It is currently unclear whether these atypical responses are due to the linguistic nature of the inputs or the social aspect itself. Further, it is unclear how atypical sensory responses to sociocommunicative stimuli intersect with autism symptomatology. The current study addressed these outstanding questions by using pupillometry in mental age-matched children with and without autism (N = 71) to examine physiological responses to dynamic, audiovisual stimuli including social, sociolinguistic, socioemotional, and nonsocial stimuli, as well as to temporally manipulated stimuli. Data revealed group differences in pupillary responses with social stimuli but not nonsocial stimuli and, importantly, showed no variation through the inclusion of linguistic or emotional information. This suggests that atypical sensory responses are driven primarily by the inclusion of social information broadly. Further, individual responses to social stimuli were significantly correlated with a wide range of autism spectrum disorder symptomatology, including social communication, restricted interests and repetitive behaviors, and sensory processing issues. Pupillary responses to social but not nonsocial presentation were also capable of predicting diagnosis with a high level of selectivity, but only with marginal sensitivity. Finally, responses to the temporal manipulation did not yield any group differences, suggesting that while atypical multisensory temporal processing has been well documented in autism at the level of behavior and perception, these issues may be intact at the physiological level. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

The cascading influence of multisensory processing on speech perception in autism.

It has been recently theorized that atypical sensory processing in autism relates to difficulties in social communication. Through a series of tasks concurrently assessing multisensory temporal processes, multisensory integration and speech perception in 76 children with and without autism, we provide the first behavioral evidence of such a link. Temporal processing abilities in children with autism contributed to impairments in speech perception. This relationship was significantly mediated by their abilities to integrate social information across auditory and visual modalities. These data describe the cascading impact of sensory abilities in autism, whereby temporal processing impacts multisensory information of social information, which, in turn, contributes to deficits in speech perception. These relationships were found to be specific to autism, specific to multisensory but not unisensory integration, and specific to the processing of social information.

Linking Anxiety and Insistence on Sameness in Autistic Children: The Role of Sensory Hypersensitivity.

Sensory hypersensitivity and insistence on sameness (I/S) are common, co-occurring features of autism, yet the relationship between them is poorly understood. This study assessed the impact of sensory hypersensitivity on the clinical symptoms of specific phobia, separation anxiety, social anxiety and I/S for autistic and typically developing (TD) children. Parents of 79 children completed questionnaires on their child's difficulties related to sensory processing, I/S, and anxiety. Results demonstrated that sensory hypersensitivity mediated 67% of the relationship between symptoms of specific phobia and I/S and 57% of the relationship between separation anxiety and I/S. No relationship was observed between sensory hypersensitivity and social anxiety. These mediation effects of sensory hypersensitivity were found only in autistic children, not in TD children.

Spontaneous strategy use in children with autism spectrum disorder: the roles of metamemory and language skills.

Metamemory, or beliefs about one's own memory capabilities, knowing what you know, and knowing what you don't know, has frequently been linked to the spontaneous use of rehearsal strategies in typically developing children. However, limited research has investigated mnemonic strategy use, metamemory, or the relationship between these two cognitive processes in children with autism spectrum disorders (ASDs). The current study examined the relative strength of metamemory knowledge and language skills as predictors of rehearsal use and memory performance in individuals with ASD. Twenty-one children with ASD and 21 children in a combined comparison group were matched on chronological and verbal mental age. Over two sessions, participants completed a serial recall task, a language measure, and a metamemory questionnaire. Children were classified as rehearsers/non-rehearsers based on behavioral observations and/or verbal reports of strategy use. As expected from previous research, the comparison group had a significantly higher proportion of rehearsers than the ASD group. However, spontaneous rehearsers performed significantly better on the serial recall task than non-rehearsers, regardless of group membership. Children in the comparison group had a higher mean total score on the metamemory questionnaire than the ASD group. However, when examined by rehearsal use, participants classified as rehearsers, regardless of diagnostic group, scored significantly higher on the metamemory questionnaire than non-rehearsers. Finally, across groups, hierarchical regression analyses identified both metamemory and language proficiency as significant predictors of rehearsal strategy use. The fact that the predictors showed the same relationship across the comparison group and the ASD group implies that metamemory and language proficiency, while separate entities, are both fundamental underlying skills contributing to the emergence of rehearsal strategies, and that the results are likely generalizable to other populations with developmental challenges.

Language proficiency and metacognition as predictors of spontaneous rehearsal in children.

Despite decades of research on fundamental memory strategies such as verbal rehearsal, the potential underlying skills associated with the emergence of rehearsal are still not fully understood. Two studies examined the relative roles of language proficiency and metamemory in predicting rehearsal use, as well as the prediction of metamemory performance by language proficiency. In Study 1, 59 children, 5 to 8 years old, were administered a serial recall task, 2 language measures, a nonverbal cognitive measure, and a rapid automatized naming (RAN) task. Language proficiency, RAN, and age were significant individual predictors of rehearsal use. In hierarchical regression analyses, language proficiency mediated almost completely the age → rehearsal use relation. In addition, automatized naming was a strong but partial mediator of the contribution of language proficiency to rehearsal use. In Study 2, 54 children were administered a metamemory test, a language measure, and a serial recall task. Metamemory skills and, again, language proficiency significantly predicted rehearsal use in the task. The predictive strength of metamemory skills was mediated by the children's language proficiency. The mutually supportive roles of automatized naming, language, and metamemory in the emergence of spontaneous cumulative verbal rehearsal are discussed in the context of the resulting model, along with the minimal roles of age and aspects of intelligence.

Shedding light on a pervasive problem: a review of research on bullying experiences among children with autism spectrum disorders.

Autism spectrum disorders (ASD) are characterized by difficulties with social interaction, verbal and nonverbal communication, and the development and maintenance of interpersonal relationships. As a result, individuals with ASD are at an increased risk of bullying victimization, compared to typically developing peers. This paper reviews the literature that has emerged over the past decade regarding prevalence of bullying involvement in the ASD population, as well as associated psychosocial factors. Directions for future research are suggested, including areas of research that are currently unexplored or underdeveloped. Methodological issues such as defining and measuring bullying, as well as informant validity and reliability, are considered. Implications for intervention are discussed.

The McGurk effect in children with autism and Asperger syndrome.

Children with autism may have difficulties in audiovisual speech perception, which has been linked to speech perception and language development. However, little has been done to examine children with Asperger syndrome as a group on tasks assessing audiovisual speech perception, despite this group's often greater language skills. Samples of children with autism, Asperger syndrome, and Down syndrome, as well as a typically developing sample, were presented with an auditory-only condition, a speech-reading condition, and an audiovisual condition designed to elicit the McGurk effect. Children with autism demonstrated unimodal performance at the same level as the other groups, yet showed a lower rate of the McGurk effect compared with the Asperger, Down and typical samples. These results suggest that children with autism may have unique intermodal speech perception difficulties linked to their representations of speech sounds.

An examination of iconic memory in children with autism spectrum disorders.

Iconic memory is the ability to accurately recall a number of items after a very brief visual exposure. Previous research has examined these capabilities in typically developing (TD) children and individuals with intellectual disabilities (ID); however, there is limited research on these abilities in children with Autism Spectrum Disorders (ASD). Twenty-one TD and eighteen ASD children were presented with circular visual arrays of letters for 100 ms and were asked to recall as many letters as possible or a single letter that was cued for recall. Groups did not differ in the number of items recalled, the rate of information decay, or speed of information processing. These findings suggest that iconic memory is an intact skill for children with ASD, a result that has implications for subsequent information processing.

Discrimination of temporal synchrony in intermodal events by children with autism and children with developmental disabilities without autism.

BACKGROUND: This project examined the intermodal perception of temporal synchrony in 16 young children (ages 4 to 6 years) with autism compared to a group of children without impairments matched on adaptive age, and a group of children with other developmental disabilities matched on chronological and adaptive age. METHOD: A preferential looking paradigm was used, where participants viewed non-linguistic, simple linguistic or complex linguistic events on two screens displaying identical video tracks, but one offset from the other by 3 seconds, and with the single audio track matched to only one of the displays. RESULTS: As predicted, both comparison groups demonstrated significant non-random preferential looking to violations of temporal synchrony with linguistic and non-linguistic stimuli. However, the group with autism showed an impaired, chance level of responding, except when presented with non-linguistic stimuli. CONCLUSIONS: Several explanations are offered for this apparently autism-specific, language-specific pattern of responding to temporal synchrony, and potential developmental sequelae are discussed.

Transfer, control, and automatic processing in a complex motor task: an examination of bounce juggling.

The authors evaluated the hypothesis that controlled and automatic processes are opposite ends of a continuum of learning (e.g., R. M. Shiffrin & W. Schneider, 1977) vs. an alternative, concurrent emergence hypothesis (e.g., J. M. Bebko et al., 2003; G. Logan, 1989). The authors also measured potential positive transfer effects of learning from one motor task to another. Four experienced cascade jugglers and 5 novices learned to bounce juggle, practicing regularly for 5 weeks. The experienced jugglers showed positive transfer of learning, maintaining a lead of approximately 6-10 days over the novices, even as both groups automatized the new skill. Measures of automatic and controlled processing were positively correlated, indicating that those processes emerge concurrently. The authors present a model in which controlled and automatic processes emerge orthogonally.

Acquisition and automatization of a complex task: an examination of three-ball cascade juggling.

The learning patterns of 3-ball cascade juggling from acquisition until automaticity were examined in 10 participants. On the basis of outcome measures derived from 26 practice sessions and 4 periodic probe sessions, the authors differentiated participants into 3 distinct learning types: a proficient group, an emerging group, and a single late learner. The proficient group was distinguished by how rapidly they learned and automatized performance. Most interesting, an inverse response cost (i.e., performance boost) on the secondary task was found in the majority of proficient group members during the dual-task condition. The present results are discussed in relation to the P. L. Ackerman model (1987, 1988) of complex skill acquisition as is the significance of the inverse response cost finding.

The Language Proficiency Profile-2: Assessment of the Global Communication Skills of Deaf Children Across Languages and Modalities of Expression.

Data are presented from two studies that investigate the developmental trends and concurrent validity of a measure of language and communication skills for deaf children, the Language Proficiency Profile-2 (LPP-2), developed by Bebko and McKinnon (1993). The LPP-2 was designed to evaluate the overall linguistic/communicative skills of deaf children, independent of any specific language or modality of expression. It focuses on the totality of the children's communication skills. Experiment 1 investigated developmental trends of the LPP-2 for both deaf and hearing children, studying a combined sample of deaf and hearing children from the United States and Canada. Experiment 2 investigated the relationship between the LPP-2 and two commonly used measures to assess deaf children on language development (Preschool Language Scale-3) and early reading skills (Test of Early Reading Ability-Deaf/Hard-of-Hearing). Results from the two studies indicate that the LPP-2 has good utility not only as a measure of overall language development but also as a predictor of achievement for English language and early reading skills.

The Profile of Multiple Language Proficiencies: A Measure for Evaluating Language Samples of Deaf Children.

This article reports the process of creating a developmental measure that assesses the multilingual capabilities of deaf children and the problems that were encountered. Because deaf children may be using more than one method of communication (e.g., sign language skills and spoken language skills), it is important to evaluate their skills as completely as possible. In a pilot study, we used a nominal scale that assessed language skills based on a single continuum, with good English and good American Sign Language (ASL) skills as its two extremes and approximately equal skills in both as the midpoint. In the main study, a more complete measure was created, the Profile of Multiple Language Proficiencies (PMLP). The PMLP uses a single scale that represents the different stages of language development that can be observed in both English and ASL. The PMLP showed reasonable initial reliability and has good promise as an easy-to-use measure of developing language skills in children who use multiple modalities of communication. Using the PMLP as a prototype, we discuss some of the issues that influence the reliability and validity in evaluating such a scale and how these can be overcome or avoided.