Aggression refers to behaviors, tendencies, and psychological processes directed toward causing harm, asserting dominance, or responding to perceived threat or frustration. It includes overt behaviors, such as verbal or physical aggression, as well as related emotional and cognitive processes such as anger, hostility, resentment, and revenge motivation.
Conflict refers to situations of incompatible goals or interests and the ways individuals manage disagreement. Aggression and conflict overlap, but they are not identical: conflict can be handled through cooperation, avoidance, negotiation, or problem solving, while aggression involves harmful or coercive responses.
Contemporary research distinguishes several forms of aggression. Reactive aggression is impulsive and emotionally driven, often occurring in response to provocation. Proactive aggression is more deliberate and goal-oriented. Aggression is also commonly distinguished from anger, which is an emotional state, and hostility, which reflects negative beliefs and expectations about others.
These measures assess aggression as a relatively stable tendency or as a pattern of aggressive behavior across situations. They may cover physical and verbal aggression, reactive and proactive aggression, hostility, impulsive aggression, and the history or severity of aggressive acts.
The Buss-Durkee Hostility Inventory (BDHI) is a historically important measure of hostility and aggression, assessing components such as assault, indirect hostility, irritability, negativism, resentment, suspicion, verbal hostility, and guilt. ✝ historical
The Buss-Perry Aggression Questionnaire (BPAQ) is a revised and widely used measure of aggression that assesses physical aggression, verbal aggression, anger, and hostility.
The Brief Aggression Questionnaire (BAQ) provides a shorter assessment of the same broad aggression domains.
The Reactive-Proactive Aggression Questionnaire (RPQ) distinguishes between reactive aggression, driven by anger or provocation, and proactive aggression, used instrumentally to achieve goals.
The Instrumental and Expressive Representation Scales (ExpAgg) distinguish between expressive aggression and instrumental aggression, complementing the reactive–proactive framework.
The Aggressive Provocation Questionnaire (APQ) assesses aggressive tendencies in response to provocative situations, focusing on how individuals are likely to react when they perceive threat, insult, or interpersonal challenge.
The Life History of Aggression (LHA) assesses aggressive and antisocial behaviors across the lifespan and is often used in clinical and forensic research.
The Modified Overt Aggression Scale (IBR-MOAS) assesses the severity and type of overt aggressive behavior.
Anger is the emotional component most closely associated with aggression, while hostility reflects negative beliefs, mistrust, resentment, and expectations of ill intent. These measures describe emotional arousal, anger expression, anger regulation, revenge motivation, and aggressive thoughts or fantasies.
The State-Trait Anger Expression Inventory (STAXI) distinguishes between state anger, trait anger, anger expression, and anger control. © proprietary
The Novaco Anger Scale (NAS) provides a detailed assessment of anger experience, including cognitive, physiological, and behavioral components.
The PROMIS Anger assesses the frequency and intensity of anger, irritability, and related emotional experiences.
The Dimensions of Anger Reactions (DAR-R, DAR-5) assesses anger reactions and their impact on daily functioning.
The Clinical Anger Scale (CAS) assesses the severity of anger as a clinical symptom, capturing affective, cognitive, and behavioral aspects of anger experience. It is often used to evaluate maladaptive anger in relation to broader psychological distress.
The Multidimensional Anger Inventory (MAI) assesses anger as a multidimensional construct, including anger arousal, range of anger-eliciting situations, hostile outlook, anger-in, and anger-out.
The Cook-Medley Hostility Scale (CMHS) assesses hostile attitudes, including cynicism, suspicion, resentment, and mistrust.
The State Hostility Scale assesses temporary hostile affect and hostile mood states, often in experimental research on aggression, provocation, or violent media exposure.
The Vengeance Scale assesses endorsement of revenge-oriented attitudes and retaliatory motivation.
The Anger Rumination Scale (ARS) assesses the tendency to repeatedly think about anger-inducing events, past provocations, and retaliatory themes.
The Schedule of Imagined Violence (SIV) assesses the frequency and vividness of thoughts, fantasies, and mental imagery involving aggression, retaliation, and violent acts.
Not all aggression is direct or physical. Indirect, relational, displaced, and passive forms of aggression may involve gossip, exclusion, reputation damage, manipulation, delayed retaliation, or indirect expression of hostility.
The Indirect Aggression Scales (IAS) assesses aggression expressed through indirect social means rather than direct confrontation.
The Self-Report of Aggression and Social Behavior Measure (SRASBM) assesses direct and indirect aggression, including relational behaviors such as exclusion and manipulation.
The Direct Indirect Aggression Inventory (DIAS) assesses direct and indirect forms of aggression across contexts.
The Peer Conflict Scale (PCS) assesses proactive and reactive forms of overt and relational aggression, especially in youth and developmental research.
The Displaced Aggression Questionnaire (DAQ) assesses the tendency to direct aggression toward targets other than the original source of provocation, including anger rumination, revenge planning, and displaced aggressive behavior.
The Passive Aggression Scale (PAS) assesses indirect and passive-aggressive behaviors, such as avoidance, criticism, sabotage, and indirect expressions of hostility.
Conflict measures assess how people manage disagreement, competing interests, and interpersonal tension. They describe patterns such as cooperation, avoidance, accommodation, competition, compromise, dominance, and problem solving.
The Thomas-Kilmann Conflict Mode Instrument (TKI) describes five conflict styles: competing, collaborating, compromising, avoiding, and accommodating. It is widely used in organizational settings. © proprietary
The Rahim Organizational Conflict Inventory (ROCI-II) assesses conflict management styles in interpersonal and workplace contexts, including integrating, obliging, dominating, avoiding, and compromising.
⇒ Measures focused specifically on conflict in romantic, family, and other close relationships are considered in the Relationship Dynamics domain.
Aggression may vary across age, developmental stage, social environment, and observer perspective. These measures are designed for children, adolescents, caregivers, teachers, or specific contexts where aggressive behavior has distinct forms and meanings.
The Children's Scale of Hostility and Aggression: Reactive/Proactive (C-SHARP) assesses hostile and aggressive behavior in children, distinguishing reactive and proactive patterns.
The Reactive and Proactive Aggressiveness Scales assess aggression motivated by immediate provocation or anger, as well as more instrumental or goal-directed forms of aggression.
The Aggression Scale assesses self-reported aggressive behavior in children and young adolescents, including verbal and physical aggression in school and peer contexts.
The Children's Hostility Inventory (CHI) assesses hostility and aggression in children, including assaultiveness, irritability, negativism, resentment, suspicion, and verbal hostility.
Bullying measures assess repeated aggression in peer, school, workplace, or online contexts. They may cover perpetration, victimization, bystander behavior, power imbalance, and direct or indirect forms of harm.
The Revised Olweus Bully/Victim Questionnaire (ROBVQ) assesses bullying and victimization among students, including direct and indirect forms of peer aggression and the respondent's role as bully, victim, or uninvolved peer.
The Bullying Prevalence Questionnaire (BPQ) assesses the frequency and forms of bullying involvement, including perpetration, victimization, and bystander experiences.
The Illinois Bullying Scale (IBS) assesses bullying behavior, victimization, and peer aggression, and may also be used retrospectively to evaluate past bullying experiences in adulthood.
The Multidimensional Peer-Victimization Scale assesses experiences of peer victimization in children and adolescents, including physical victimization, verbal victimization, social manipulation, and attacks on property.
Scenario-based and projective methods assess how people respond to frustration, blocked goals, provocation, or interpersonal tension. They are useful when aggression is examined through imagined reactions rather than direct self-description.
The Rosenzweig Picture-Frustration Study is a projective-style method assessing characteristic responses to frustrating social situations. Responses are classified according to the direction and type of aggression, such as blaming the environment, blaming oneself, or minimizing responsibility. It is historically important in frustration-aggression research, but should be distinguished from modern standardized self-report aggression scales.
⇒ Emotion regulation. Anger and aggression are closely related to emotional reactivity, impulse control, expressive regulation, and strategies for managing intense affect.
⇒ Interpersonal Traits. Conflict behavior, dominance, hostility, assertiveness, and interpersonal antagonism overlap with broader interpersonal dispositions.
⇒ Relationship dynamics. Aggression and conflict may appear in close relationships through destructive communication, coercion, withdrawal, hostility, and difficulties resolving disagreements.
Aggression and conflict-related measures should be interpreted as assessing related but distinct emotional, cognitive, behavioral, and interpersonal processes. Trait aggression measures describe general tendencies, anger and hostility measures focus on affective and cognitive components, and conflict-style instruments describe how disagreement is managed.
No single measure captures the whole aggression and conflict system. Assessment should distinguish anger from aggressive behavior, conflict from coercion, reactive from proactive aggression, direct from indirect aggression, and general aggressive tendencies from context-specific behaviors.
A profile-based interpretation helps clarify whether difficulties are mainly driven by emotional reactivity, hostile beliefs, revenge motivation, poor impulse control, indirect aggression, conflict style, developmental context, or repeated peer aggression.