Developmental changes and loneliness during adolescence.
D000293:Adolescent; D000704:Analysis of Variance; D005260:Female; D006803:Human Development; D006801:Humans; D008132:Loneliness; D008297:Male; D010371:Pediatric Nursing; D000297:Psychology, Adolescent; D012494:Sampling Studies; D012934:Social Isolation; D011795:Surveys and Questionnaires