Association of difficulties in motor skills with longitudinal changes in social skills in children with autism spectrum disorder: findings from the ELENA French Cohort.

Developmental coordination disorder is a frequently co-occurring condition with autism spectrum disorder (ASD). Several cross-sectional studies have reported that children with difficulties in motor skills have a higher severity of ASD symptoms. This study aims to examine the association of difficulties in motor skills with longitudinal changes in social skills in children with ASD. Participants were drawn from the ELENA cohort, a French longitudinal cohort of children with ASD. Motor skills were assessed using the Movement Assessment Battery for Children at baseline, while social skills were measured using the Autism Diagnostic Observation Schedule (ADOS-2) and the Vineland Adaptive Behavior Scales (VABS-II) at both the baseline and a follow-up assessment conducted 3 years later. A composite score of social skills was created at baseline and at both time points. Linear regression models were performed to assess the association between difficulties in motor skills and changes in social skills, considering potential confounders such as IQ, age, and gender. The sample included 162 children with ASD. Children with difficulties in global motor skills (N = 114) showed less favorable trajectories in social skills compared to those without motor difficulties. The results were consistent when examining the ADOS-2 and the VABS-II separately. This study provides evidence for the negative impact of difficulties in motor skills on the longitudinal development of social skills in children with ASD. Interventions targeting motor difficulties may have broader benefits, extending beyond motor function to improve socialization.

Effectiveness of CO-OP group intervention for children with developmental coordination disorder: single-case experimental design study protocol.

INTRODUCTION: With the Cognitive Orientation to daily Occupational Performance (CO-OP) approach, children with developmental coordination disorder learn to use a problem-solving strategy to deal with their motor difficulties and perform daily activities of their choice. Therapists use guided discovery to enable children to find their own solutions. Although CO-OP is recommended in a group setting, studies are needed to support its effectiveness. METHODS AND ANALYSIS: A single-case study design with multiple baselines across participants and four systematic replications will be used. In each of the five groups, four children (aged 8-12 years) will be randomly included at the baseline. The baseline includes 5-8 measurements, and the CO-OP intervention stage is comprised of 10 sessions. The follow-up stage includes five measurements. Prior to baseline, each child in each of the five groups will choose five activities of which three will be carried out during the intervention sessions. Children's performance in each of these activities will be scored using the Performance Quality Rating Scale (PQRS) as the main measure. Three secondary measures will be collected: perceived activity performance using the Canadian Occupational Performance Measure, quality of life using the Kidscreen-27 and spontaneous motor rhythm using a computerised typing task. Graphed data will be analysed visually at the individual level with the Visual Aid Implying an Objective Rule (VAIOR) protocol which provides a colour code based on the level and trend of two consecutive phases, facilitating an objective visual analysis. Statistics will be performed for PQRS scores at the individual level and at the group level. ETHICS AND DISSEMINATION: The protocol has been approved by the Comité de protection des personnes Sud-Est I (CPP 2021070) and the Comité d'éthique de la recherche avec les êtres humains de l'Université du Québec à Trois-Rivières (CER-22-294-07.03). Results will be published in a peer-reviewed scientific journal. TRIAL REGISTRATION NUMBER: NCT05231486.

Effectiveness of CO-OP Approach for Children With Neurodevelopmental Disorders: A Systematic Review.

Objective: To examine the scientific evidence regarding the effectiveness of the Cognitive Orientation to Daily Occupational Performance (CO-OP) approach for children with neurodevelopmental disorders (NDDs). Data Sources: Selected articles published between January 2001 and September 2020 and listed in CINAHL, MEDLINE, and PsycINFO on the EBSCO platform, or found searching with Scopus, Google Scholar, OTseekern Central Register of Controlled Trials in the Cochrane Library, WHO International Clinical Trials Registry Platform, Turning Research into Practice, and ProQuest Dissertations and Theses. An update was performed in March 2022. Study Selection: Eligibility criteria included studies that assessed the effectiveness of the CO-OP approach on children (0-18 years) with NDDs. Unpublished results were excluded, as well as research published in a language other than English or French. Data Selection: The first 2 authors independently reviewed the titles, abstracts, and full texts. Discrepancies were discussed and resolved by consensus. Included studies were quality appraised using the PEDro-P scale or using the risk of bias scale in N-of-1 trials (RoBiNT) according to experimental design. Data Synthesis: Results were reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Eighteen studies were initially included, with 2 additional studies added in the update. Three reached evidence level III (15%), 10 reached level IV (70%), and 5 reached level V (15%). All data collected on the activity-participation domain showed a significant improvement. Group therapy sessions show promising results for the improvement of activities or participation, as well as psychosocial dimensions such as self-esteem. Conclusions: The scientific evidence analyzed shows that the CO-OP approach has a positive effect on children with NDDs, particularly in regard to their activities and participation. Future experimental studies should be designed in ways that allow determining effect sizes. Group therapy sessions appear relevant but require further research.

Psychomotor intervention to improve handwriting skills in children with ADHD: A single-case experimental design with direct inter-subject and systematic replications.

Dysgraphia is highly prevalent in children with attention deficit hyperactivity disorder (ADHD) and adversely affects academic and developmental trajectories. To date, no study has rigorously examined the effects of a training program on handwriting quality in this specific population. Our objective was thus to develop an innovative program - we entitled PRO-PEN - and to evaluate its effects. We planned a multiple-baseline design across participants from grade 3-5, with direct inter-subject and systematic replications. Children of Group 1 (n = 4) were diagnosed with ADHD. Systematic replication was conducted in a second group of participants (Group 2, n = 4) with a diagnosis of developmental coordination disorder in addition to ADHD. The primary assessment focused on quality of handwriting. Generalization measures evaluated diverse neuropsychological and behavioural domains. In Group 1, effect sizes regarding handwriting quality were large (Taus > .60). Improvement was also observed for children of Group 2 (Taus > .50). Importantly, the positive effects persisted three months after the end of the training. Generalization effects extended beyond handwriting sphere. Therefore, PRO-PEN can be considered a promising training program for improving handwriting quality in ADHD, with a possible impact on wide cerebral regulation loops underpinning both handwriting and other neuropsychological and behavioural domains.