Abstract Task-Centered Models include Cognitive-Behavior Therapy (CBT) and Task-Centered Therapy begins with light Cognitive Therapy focuses on thoughts, next Behavioral Therapy focus on act and reward application. Behavioural therapy also as a preface into task-centered therapy as conditioning. Comorbid symptoms of anxiety, aggression, and depression are target of changes. Using methods of action research, with Single Subject Design with pattern model of A-B at one baseline period (control) and two intervention period (treatments phase). The purpose of this study is to proof main hypothesis H1 = Task-Centered Models can reduce symptoms of anxiety, aggression and depression of respondent Y or H0 = Task-Centered Models can not reduce symptoms of anxiety, aggression and depression of respondent Y. Related with research setting, qualitative analysis of the research subjects should also be included. Hypothesis is tested by using the formula of 2 standard deviation (2 SD), visual analysis within and between conditions. Test result shows that the entire hypothesis is accepted with and fulfill criterias of visual analysis significant. Its concluded that intervention effectiveness define by motivation, participation and discipline,parent commitment is vital for therapy that demands action and consistency, maintaining cognitive of respondent are essential for reducing stressors of recurrence through recreational activity and positive emotion building.Key words: Psychiatric Social Worker, Psychiatric Disorder, Cognitive-Behavior Therapy, Task- Centered TherapyAbstrak Model Task-Centered meliputi Cognitive-Behaviour Therapy (CBT) dan Terapi Berpusat Tugas (Task-Centered), dimulai oleh Terapi Kognitif ringan yang fokus pada pikiran, kemudian Terapi Behavioral fokus pada kegiatan (tindakan) tujuan dan penentuan bentuk imbalan (rewards). Terapi Behavioural menjadi pengantar terapi berpusat-tugas yang bersifat conditioning. Gejala penyerta anxiety (kegelisahan), aggression (agresifitas), dan depression (depresi) merupakan target perubahan. Pilihan metode penelitian yaitu penelitian tindakan (action research) dengan Desain Subjek Tunggal (Single Subject Design) dengan pola A-B dalam satu periode baseline (kontrol) dan dua periode intervensi (treatment phase). Tujuan penelitian ini adalah untuk membuktikan hipotesis utama; H1= task-centered model dapat menurunkan gejala anxiety, aggression dan depression responden Y atau H0= task-centered model tidak dapat menurunkan gejala anxiety, aggression dan depression responden Y. Berkaitan dengan setting penelitian, penjelasan kualitatif cukup penting untuk dilakukan. Secara kuantitatif, pengujian hipotesis dilakukan dengan menggunakan rumus 2 standard deviation (2 SD) dan analisis visual dalam kondisi. Berdasarkan hasil pengujian, diperoleh hasil bahwa hipotesis diterima ( ) dan memenuhi kriteria signifikansi dalam analisis visual. Kesimpulan penelitian adalah efektifitas intervensi ditentukan motivasi, peran serta dan tingkat kedisiplinan, komitmen orangtua penting dalam terapi yang menuntut aksi dan konsistensi responden, penekanan kognitif responden menurunkan stressor kekambuhan melalui kegiatan rekreatif dan positive emotion building.Kata kunci: Pekerja Sosial Medis Setting Kesehatan Mental, Gangguan Kejiwaan, Terapi Kognitif-Behavior, Terapi Berpusat Tugas