Does peer group membership relate to sociodramatic play engagement? A social ethological approach.

Engagement in sociodramatic play has been shown to positively impact young children's learning and development. By definition, this type of social play occurs in groups; however, research to date has primarily sought to understand sociodramatic play engagement by focusing on individual factors. Little work has considered the role of the peer group in sociodramatic play engagement. This concurrent correlational study investigated relations between types of peer group membership and the amount of children's sociodramatic play engagement, using hierarchical cluster analyses, chi-square tests and multiple regression to analyse naturalistic data of preschoolers' free play. Findings suggest that membership in a highly cohesive peer subgroup may be important for sociodramatic play engagement. This study illustrates how social ethological perspectives can be useful for understanding social play in early childhood.

Response patterns in the developing social brain are organized by social and emotion features and disrupted in children diagnosed with autism spectrum disorder.

Adults and children recruit a specific network of brain regions when engaged in "Theory of Mind" (ToM) reasoning. Recently, fMRI studies of adults have used multivariate analyses to provide a deeper characterization of responses in these regions. These analyses characterize representational distinctions within the social domain, rather than comparing responses across preferred (social) and non-preferred stimuli. Here, we conducted opportunistic multivariate analyses in two previously collected datasets (Experiment 1: n = 20 5-11 year old children and n = 37 adults; Experiment 2: n = 76 neurotypical and n = 29 5-12 year old children diagnosed with Autism Spectrum Disorder (ASD)) in order to characterize the structure of representations in the developing social brain, and in order to discover if this structure is disrupted in ASD. Children listened to stories that described characters' mental states (Mental), non-mentalistic social information (Social), and causal events in the environment (Physical), while undergoing fMRI. We measured the extent to which neural responses in ToM brain regions were organized according to two ToM-relevant models: 1) a condition model, which reflected the experimenter-generated condition labels, and 2) a data-driven emotion model, which organized stimuli according to their emotion content. We additionally constructed two control models based on linguistic and narrative features of the stories. In both experiments, the two ToM-relevant models outperformed the control models. The fit of the condition model increased with age in neurotypical children. Moreover, the fit of the condition model to neural response patterns was reduced in the RTPJ in children diagnosed with ASD. These results provide a first glimpse into the conceptual structure of information in ToM brain regions in childhood, and suggest that there are real, stable features that predict responses in these regions in children. Multivariate analyses are a promising approach for sensitively measuring conceptual and neural developmental change and individual differences in ToM.

Friendship Expectations May be Similar for Mental Age-Matched Children with Autism Spectrum Disorder and Typically Developing Children.

We assessed 3rd-5th grade children's endorsement of 12 friendship expectations, in two mental age-matched (M = 10.15 years) groups; one with autism spectrum disorder (ASD; n = 20) and one with typical development (TD; n = 21). Groups rated friendship expectations similarly for all but one expectation, expressing care, which received significantly higher ratings in the ASD group. Overall expectation ratings were significantly and positively correlated with friendship quality in the ASD group (r = 0.43), but not the TD, group (r = 0.08). Expectations were not correlated with loneliness or self-worth in either group. In children with ASD, expectations pertaining to reliability/trust, kindness/caring, and help/reciprocity were rated highest, followed by togetherness/amusement, and finally by intimacy/disclosure.

Responses to Vignettes Depicting Friendship Transgressions: Similarities and Differences in Children With and Without Autism Spectrum Disorder.

We examined children's responses to vignettes depicting a child making one of four friendship transgressions; failing to provide validation, failing to provide help, being an unreliable partner, and betrayal. Twenty elementary students with autism spectrum disorder (ASD) and 21 typically developing (TD) students participated. Children rated emotional responses, the strategies they would use following each transgression, interpretations of transgressions, and goals of their responses. Children with ASD rated sadness lower than TD children, and rated verbal aggression strategies higher than TD children. There were several significant correlations between emotional responses and goals, strategies, and interpretations in the ASD group. Betrayal was considered the most severe transgression. These results will aid researchers aiming to support friendship maintenance in children with ASD.

Sequential Associations Between Caregiver Talk and Child Play in Autism Spectrum Disorder and Typical Development.

This study examined sequential associations between child play and caregiver talk in 98 caregiver-child dyads (Mmental age  = 14 months). Fifty dyads included a child with autism spectrum disorder (ASD). Analyses revealed sequential associations between child play and caregiver follow-in (FI) utterances (utterances related to the child's attentional focus) were stronger in the ASD as compared to the typically developing (TD) group. FI utterances were more likely to elicit functional play than caregiver-focused utterances, and more so in the ASD group. Across groups, FI directives were more likely to elicit functional play than FI comments. These findings have important implications for research involving caregiver-child play as an early intervention context for children with ASD.

Differences in the right inferior longitudinal fasciculus but no general disruption of white matter tracts in children with autism spectrum disorder.

One of the most widely cited features of the neural phenotype of autism is reduced "integrity" of long-range white matter tracts, a claim based primarily on diffusion imaging studies. However, many prior studies have small sample sizes and/or fail to address differences in data quality between those with autism spectrum disorder (ASD) and typical participants, and there is little consensus on which tracts are affected. To overcome these problems, we scanned a large sample of children with autism (n = 52) and typically developing children (n = 73). Data quality was variable, and worse in the ASD group, with some scans unusable because of head motion artifacts. When we follow standard data analysis practices (i.e., without matching head motion between groups), we replicate the finding of lower fractional anisotropy (FA) in multiple white matter tracts. However, when we carefully match data quality between groups, all these effects disappear except in one tract, the right inferior longitudinal fasciculus (ILF). Additional analyses showed the expected developmental increases in the FA of fiber tracts within ASD and typical groups individually, demonstrating that we had sufficient statistical power to detect known group differences. Our data challenge the widely claimed general disruption of white matter tracts in autism, instead implicating only one tract, the right ILF, in the ASD phenotype.