ABSTRAK
Pada masa remaja, hubungan dengan teman sebaya merupakan hal yang penting, salah satunya mempengaruhi pembentukan persepsi diri individu. Keterampilan sosial dibutuhkan agar remaja dapat menjalin hubungan yang baik dengan teman sebaya. Oleh karena itu, remaja dengan defisit keterampilan sosial membutuhkan intervensi. Penelitian ini menggunakan desain pre and post test untuk melihat efektivitas penerapan Social Skills Training untuk meningkatkan keterampilan sosial pada remaja yang mengalami masalah hubungan pertemanan di sekolah. Partisipan penelitian adalah remaja perempuan berusia 14 tahun dengan masalah defisit keterampilan sosial. Sesi terapi dilakukan sebanyak delapan sesi selama 30-60 menit setiap sesinya. Hasil yang diperoleh pada penelitian ini yaitu terdapat peningkatan keterampilan sosial S pada semua target perilaku intervensi. Berdasarkan Child rsquo;s Behavior Checklist, terjadi peningkatan skor pada sub-skala kompetensi sosial. Berdasarkan Social Skills Questionnaire, terjadi peningkatan skor total dan skor pada komponen perilaku sosial, persepsi sosial, regulasi diri, dan pemecahan masalah sosial. Guru dan teman dilibatkan sebagai observer untuk menilai keterampilan sosial partisipan. Peningkatan keterampilan sosial pada komponen perilaku sosial didukung hasil observasi dan wawancara oleh guru, sedangkan peningkatan pada komponen regulasi diri didukung oleh hasil observasi dan wawancara teman partisipan. Berdasarkan Self-Perception for Adolescent, terjadi peningkatan skor pada sub-domain social competence, physical appearance, close friendship, dan global self-esteem.

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ABSTRACT
Peer relationship is important for adolescence, especially for the development of their self perception. Adolescent need adequate social skills to have positive peer relationships. Social skills deficits on adolescent needs immediate treatment. This study conducted a pre and post test design in order to testing the effectiveness of increasing social skills on adolescent with peer relationship problems in school. A fourteen year old girl with social skills deficit was selected as participant. A total of eight treatment sessions for 30 60 minutes each were conducted in this study. The result indicated that Social Skills Training could be applied to increasing social skills deficit in adolescent with peer relationship problems. The score of social competence sub scales in Child rsquo s Behavior Checklist were increased. The total score and the score of behavioural social skills, social perception skills, self regulation, and social problem solving components in Social Skills Questionnaire was increased as well. Teacher and friends were participating as observer in this intervention. The increasing score of behavioural social skills component was also conducted by teacher rsquo s observation, whereas the increasing score of self regulation component were conducted by peer rsquo s observation. The score of social competence, physical appearance, close friendship, and global self esteem sub domain in Self Perception Profile for Adolescent were increased as well.