Loneliness is thought to be a relatively common experience among adolescents. Although no studies have specifically examined the relationship between adolescent loneliness and attributional style, research has found that children's attributions do affect interpersonal behaviors. The relationship between adolescent loneliness and perceptions of controllabiltiy and stability was studied in 99 male and 73 female ninth grade students. The students were tested as a group within their English classes. The Revised UCLA Loneliness Scale was used to assess the students' levels of loneliness. The Adolescent Attribution Assessment Scale, designed for this study, was used to assess the students' attributional styles in terms of controllability and stability. Completion of these scales took approximately 75 minutes and required two class periods to finish. Data were analyzed by computing Pearson correlation coefficients. The results revealed a significant overall relationship between an individual's loneliness and his perceptions of controllabilty and stability with higher loneliness scores being related to perceptions of uncontrollability and stability. An important sex difference was also found. For males, loneliness was related to perceptions of uncontrollability but was not related to perceptions of stability. The data for females suggest a trend toward loneliness being related to perceptions of stability but not to perceptions of controllability. (NB)