Terdapat banyak cara untuk mengukur agresi. Tetapi, kebanyakan dari mereka sudah tidak dapat dipakai lagi dan tidak sesuai dengan kondisi pada tahun 2016. Tujuan penelitian ini adalah untuk mengembangkan dan menilai validitas dan reliabilitas dari UQ Aggression scale. Kami mengevaluasi konsistensi internal untuk mengukur reliabilitas. Kami juga mengukur validitas dengan menilai perbedaan nilai agresi antara Buss-Perry Aggression Questionnaire dan Barratt Impulsiveness Scale. Seratus empat puluh dua mahasiswa fakultas psikologi di University of Queensland mengisi UQ Aggression scale. Hasil menunjukkan bahwa reliabilitas UQ Aggression scale tinggi dan indeks diskriminasi item cukup tinggi. UQ Aggression scale berkorelasi positif dengan Buss-Perry Aggression questionnaire. UQ Aggression scale berkorelasi positif dengan Barratt Impulsiveness scale. Terdapat dua pernyataan yang tidak mengukur aggression sepenuhnya. Dengan mengubah kata-kata di pernyataan tersebut dapat memperbaiki UQ Aggression scale secara keseluruhan. Secara keseluruhan, UQ Aggression scale memppunya validitas dan reliabilitas yang tinggi. Untuk penelitian selanjutnya, kami dapat mengembangkan populasi dan membuat proporsi yang seimbang antara gender. Kami juga dapat menghubungkan UQ Aggression scale dengan variabel yang lain untuk memperbaiki validitas.

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There were many ways to measure aggression. However, most of them were out of date and might not suitable to conditions in 2016. In the present study, the aim was to develop and assess the validity and reliability of UQ Aggression scale. We evaluated the internal consistency to measure the reliability. We also measured the validity by assessing differences in aggression scores between Buss-Perry Aggression questionnaire and Barratt Impulsiveness scale. One hundred forty two psychology students at University of Queensland filled the UQ Aggression scale. It was found that the reliability was high and the item discrimination indices were moderately high. UQ Aggression scale was positively correlated with Buss-Perry Aggression questionnaire. In addition, UQ Aggression scale was positively correlated with Barratt Impulsiveness scale. There were two items that might not measured aggressions. Re-wording those items might improve the overall UQ Aggression scale. Overall, these findings suggested that UQ Aggression scale had high validity and reliability. For future research, we can expand the population and make a balance proportion of gender. We can relate the UQ Aggression scale to another variable to improve the validity.