Psychology RootsThe Aggression Scale
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About The Aggression Scale
Scale Name
The Aggression Scale
Author Details
Pamela Orpinas and Ralph Frankowski
Translation Availability
Not Sure
Background/Description
The Aggression Scale, developed by Pamela Orpinas and Ralph Frankowski, represents a significant contribution to the field of adolescent psychology and violence prevention. This self-report measure aims to assess aggressive behaviors among young adolescents, specifically targeting students in the sixth, seventh, and eighth grades. The scale, comprising 11 items, has undergone rigorous evaluation in two independent samples of young adolescents, with participant numbers reaching 253 and 8,695, respectively. Notably, the scale has demonstrated high reliability scores across these samples, exhibiting consistency irrespective of gender, ethnicity, or grade level. Furthermore, its stability over a 2-year follow-up period underscores its robustness as a measurement tool.
The Aggression Scale’s utility extends beyond its reliability, as it exhibits positive associations with teachers’ independent ratings of student aggression, other measures of aggression, and established predictors of aggressive behavior. This convergence with external criteria enhances the scale’s validity and underscores its potential as a valuable instrument for program evaluation and further research on violence prevention in middle schools. Given the prevalence and detrimental impact of violence among adolescents, particularly within the school environment, the development of effective prevention strategies is imperative. The Aggression Scale, with its brevity, ease of administration, and focus on overt behaviors, emerges as a promising tool in this endeavor.
Moreover, the practicality of the Aggression Scale is underscored by its minimal time requirement for completion and its comprehensibility to students. By centering on overt behaviors, which are more amenable to quantification than subjective perceptions, the scale aligns with the emphasis of violence prevention efforts. Notably, the scale’s deliberate focus on overt behaviors, as opposed to relational aggression, further delineates its scope and applicability. Relational aggression, involving harm through peer relationships, is intentionally excluded from the scale, thereby delineating its specific domain of inquiry. This delineation is crucial for maintaining the scale’s clarity and relevance within the context of school-based violence prevention initiatives.
In summary, the Aggression Scale represents a valuable contribution to the field of adolescent psychology and violence prevention. Its robust psychometric properties, practicality, and alignment with the focus of violence prevention efforts position it as a promising tool for program evaluation and further research in the critical domain of violence prevention in middle schools.
Administration, Scoring and Interpretation
- Typically administered as a self-report measure completed by students themselves.
- Students rate the frequency of specific aggressive behaviors on a 5-point scale.
- Can also be administered by teachers familiar with the student’s behavior.
- Ensure informed consent is obtained from participants or appropriate authorities based on your context.
Reliability and Validity
The Aggression Scale has undergone rigorous evaluation to establish its reliability and validity. In terms of reliability, the scale has demonstrated high internal consistency scores, estimated using Cronbach’s alpha coefficient, across multiple samples. Specifically, the internal consistency scores were .87 for the total sample, .88 for boys, .87 for girls, .86 for Hispanic students, .85 for African American students, and .92 for Caucasian students. The item-deleted estimates for alpha coefficients for the total sample ranged from .85 through .87. Additionally, the scale has exhibited stability over a 2-year follow-up period, further underscoring its reliability.
In terms of validity, the Aggression Scale has demonstrated positive associations with teachers’ independent ratings of student aggression, other measures of aggression, and established predictors of aggressive behavior. Specifically, mean scores on the Aggression Scale were positively related to the number of injuries due to fights, the number of days students carried a weapon, the number of days students reported drinking alcohol, decreased parental monitoring, and decreased academic achievement. All of these relations were statistically significant (p < .0001). Furthermore, the scale has exhibited construct validity, as evidenced by its positive relation to other self-reported measures and predictors of aggression.
Overall, the Aggression Scale has demonstrated high reliability and validity, making it a valuable tool for assessing aggressive behaviors among young adolescents. Its reliability and validity scores have been consistent across multiple samples, and its associations with external criteria have enhanced its validity. These findings underscore the potential of the Aggression Scale as a valuable instrument for program evaluation and further research on violence prevention in middle schools.
Available Versions
11-Items
Reference
Orpinas, P., & Frankowski, R. (2001). The Aggression Scale: A self-report measure of aggressive behavior for young adolescents. The Journal of Early Adolescence, 21(1), 50-67.
Important Link
Scale File:
Frequently Asked Questions
What is the Aggression Scale?
The Aggression Scale is a self-report measure designed to assess aggressive behaviors among young adolescents in middle schools.
What does the Aggression Scale measure?
The scale measures overt aggressive behaviors that might result in psychological or physical injury to other students, including verbal aggression (teasing, name-calling, encouraging students to fight, threatening to hurt or hit) and physical aggression (pushing, slapping, kicking, hitting), as well as information about anger (getting angry easily, being angry most of the day).
What is the scoring procedure for the Aggression Scale?
The scale consists of 11 items, and responses to each item can range from 0 times through 6 or more times, with a total score ranging between 0 and 66 points.
What is the intended use of the Aggression Scale?
The scale is intended for use in assessing aggressive behaviors among young adolescents in middle schools and can be a valuable tool for program evaluation and further research on violence prevention.
What are the limitations of the Aggression Scale?
The scale is not intended to measure other forms of aggression such as family violence, aggression against teachers, or destruction of property. Additionally, it does not include relational aggression, which involves harm through peer relationships.
How long does it take to complete the Aggression Scale?
The scale is practical and takes only a few minutes to complete, making it a feasible tool for use in school settings.
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