Loneliness affects both autistic and non-autistic children. Nevertheless, differences exist in the prevalence and characteristics of loneliness experienced by these two groups, especially in school...Show moreLoneliness affects both autistic and non-autistic children. Nevertheless, differences exist in the prevalence and characteristics of loneliness experienced by these two groups, especially in school settings. This study investigated how four school environment factors, i.e., physical connection, perceived emotional connections, received emotional connections, and recess enjoyment impact loneliness in school-aged children, focusing on the differences between autistic and non-autistic children. Conducted in 2 Dutch special education primary schools, this cross-sectional, between-group study included 104 students (Μ age = 10.4, age range: 6.8 – 14 years): 47 autistic (Μ age = 10.2) and 52 non-autistic (Μ age = 11.4). Loneliness levels were measured with the self-report questionnaire Children’s Loneliness Scale (CLS). For physical connection, the total time children spent in social contact during school recess was measured with proximity sensors (Radio Frequency Identification Device, RFID). Perceived emotional connections was measured with friendship nomination and received emotional connections with the “Like to play” (LITOP) questionnaire. Recess enjoyment was measured with Lunchtime Enjoyment of Activity and Play Questionnaire (LEAP). A regression analysis measured the relationship between feelings of loneliness and the four school environment factors, and the moderating role of autism. An independent sample t-test compared differences between groups for all variables. The results showed a significant relationship between physical connection and loneliness (β = -.409, t = -3.040, p = .003) and recess enjoyment and loneliness (β = .333, t = 2.690, p = .009). Autism moderated the impact of physical connection on loneliness: increased physical connection is associated with reduced loneliness in non-autistic children but heightened loneliness in autistic children (β = .596, t = 2.236, p = .028). Lastly, levels of physical connection (t (97) = 3.393, p = .001) were significantly lower in autistic (M = .539, SD = .221) than in non-autistic children (M = .695, SD). Our findings highlight the importance of understanding the distinct social needs and experiences of social interactions of autistic children. Policymakers and educators should prioritize gaining a deeper understanding of these differences between autistic and non-autistic children in order to develop more effective programs. With this knowledge, tailoring interventions specifically for autistic children can more effectively address loneliness.Show less