Development of Self-Control Instruments for Aggressive Behaviorin the Class Xi Vocational School of Diponegoro Majenang
Abstract
Verbal aggressive behavior is exhibited in individuals due to low self-control. This study aimed to develop instruments for aggressive behavior in students, to help improve the students’ self-control. The instrument development method was used. The data were collected through a questionnaire tested on 30 students of class XI SMK Diponegoro Majenang, chosen by random sampling. The Aiken formula with valid conditions > 0.73 was used for evaluating the validity. The KMO test results of 0.728 > 0.50 meant that the instrument could be considered valid as a measuring instrument. The reliability test was carried out with the Alpha Cronbach formula and a result of 0.853 > 0.60 was obtained. This meant that the self-control scale could be considered reliable to measure the level of control in students exhibiting aggressive behavior.
Keywords: development; instrument; self-control; aggressive behavior
References
[1] Langi J. Siswa SMK yang tikam guru berkali-kali hingga tewas di manado dikenal sering melawan guru. iNews.id [Internet]. 2019 October 23. Available from: https://regional.inews.id/berita/siswa-smk-yangtikam-guru-berkali-kali-hingga-tewas-di-manado-dikenal-sering melawan-guru
[2] Hurlock ET. Some observations on the loss in weight caused by Sitophilus granaries L. (Coleoptera, Curculionidae) to wheat under constant experimental conditions. Journal of Stored Products Research. 1965;1(2):193-195.
[3] Sidaguna S. Upaya mengurangi perilaku agresif verbal melalui bimbingan kelompok. Jurnal Ilmiah Pendidikan Bimbingan & Konseling, IKIP Veteran Semarang. 2014.(1):76-84
[4] Hanurawan F. Psikologi sosial. Bandung: Remaja Rosdakarya; 2010.
[5] Borba M. Membangun kecerdasan moral. Jakarta: Gramedia Pustaka Utama; 2008.
[6] Marsela RD, Supriatna M. Konsep diri: Definisi dan faktor. Journal of Innovative Counseling: Theory, Practice, and Research. 2019;3(2):65-69.
[7] Averill JR. Personal control over aversive stimuli and its relationship to stress. Psychological Bulletin. 1973;80(4):286.
[8] Ghufron N, Risnawati R. Teori-teori psikologi. Cetakan ke II. Yogyakarta: AR-RUZZ MEDIA; 2017.
[9] Corti R, Worthley SG, Helft G, et al. Effects of aggressive versus conventional lipid-lowering therapy by simvastatin on human atherosclerotic lesions: A prospective, randomized, double-blind trial with highresolution magnetic resonance imaging. Journal of the American College of Cardiology. 2005;46(1):106- 112.
[10] Dayakisni T, Hudaniah H. Psikologi sosial. Malang: University of Muhammadiyah Malang; 2011.
[11] Barker C, Pistrang N, Elliott R. Research methods in clinical psychology: An Introductions for Students and Practitioners, Second Edition. London: University Collage London;2002.
[12] Mardapi D. Pengukuran penilaian dan evaluasi pendidikan. Yogyakarta: Nuha Medika; 2012.
[13] Azwar S. Reliabilitas dan validitas. Edisi 4. Yogyakarta: Pustaka Pelajar; 2014.
[14] Sugiyono PD. Metode penelitian dan pengembangan.. Res. Dev. D. 2015;(39-41)
[15] Suharsimi A. Evaluasi program pendidikan edisi kedua. Jakarta: Bumi Aksara; 2008.
[16] Santoso S. Menggunakan SPSS untuk statistik non parametrik. Jakarta: PT Elex Media Komputindo; 2006.
[17] Friedenberg L. Psychological testing: Design, analysis, and use. Massach: Allyn & Bacon; 1995.
[18] Purwanto P. Metodologi penelitian kuantitatif. Yogyakarta: Pustaka Pelajar; 2007.