Perceived loneliness and social competence were assessed for 127 children with ASD without comorbid ID, 4–7 years old, through child self-report. Using an abbreviated version of the
Loneliness and Social Dissatisfaction Questionnaire (LSDQ; Cassidy and Asher in Child Dev 63:250–365,
1992), the majority of children reported friendships, yet a considerable proportion also reported social difficulties. Factor analysis of the abbreviated LSDQ identified three factors, which were significantly associated with parent- and teacher-reported variables. Regression analyses revealed parent-reported social skills deficits and teacher-reported conflict in the student–teacher relationship to be associated with child-reported loneliness. Implications for practice are discussed.