Measuring adult indirect aggression: The development and psychometric assessment of the indirect aggression scales

S Forrest, V Eatough, Mark Shevlin

Research output: Contribution to journalArticle

Abstract

This paper describes the development of a psychometric measure of indirect aggression for use in an adult population. Items were generated from a series of qualitative interviews. Two versions of the scale were developed; the Indirect Aggression Scale Aggressor version (IAS-A) and Target version (IAS-T). Both versions of the scale were administered to separate samples (n(A) = 294; n(T) = 294). Scales were analysed using item analysis of internal consistency, as well as exploratory factor analysis. Both versions were found to have the same consistent three sub-scales: social exclusion, use of malicious humour, and guilt induction. Preliminary psychometric evaluation suggests that the scales are both sufficiently reliable (with Cronbach's alphas ranging from .81 to .89) and valid. There were no gender differences in either using or being the victim of indirect aggression, and the behaviour was significantly negatively correlated with age. Future validation and potential usage of the measures are discussed. (C) 2005 Wiley-Liss, Inc.
LanguageEnglish
Pages84-97
JournalAggressive Behavior
Volume31
Issue number1
DOIs
Publication statusPublished - 2005

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Aggression
Psychometrics
Wit and Humor
Guilt
Statistical Factor Analysis
Interviews
Population

Cite this

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Measuring adult indirect aggression: The development and psychometric assessment of the indirect aggression scales. / Forrest, S; Eatough, V; Shevlin, Mark.

In: Aggressive Behavior, Vol. 31, No. 1, 2005, p. 84-97.

Research output: Contribution to journalArticle

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