Theory of Reasoned Action (Fishbein-Ajzen)

The Theory of Reasoned Action (TRA) is a model of the relationship between attitudes and behaviour developed by Martin Fishbein and Icek Ajzen, set out most fully in their 1975 volume Belief, Attitude, Intention and Behavior and refined in Understanding Attitudes and Predicting Social Behavior (1980). It emerged as a corrective to the longstanding assumption in social psychology — challenged by Richard LaPiere's 1934 study on prejudice and travel — that general attitudes reliably predict specific actions. Fishbein and Ajzen argued that attitudes predict behaviour only when measured at a matching level of specificity, and only through an intervening variable: the person's intention to perform the act. The theory is grounded in the expectancy-value tradition, which holds that evaluations are built from beliefs about an object's attributes weighted by the subjective value attached to each. TRA assumes that human beings are rational actors who systematically process available information before deciding to act, and it confines itself explicitly to behaviours under volitional control.

The procedural logic of TRA moves backward from the act through a fixed causal chain. The most immediate determinant of any volitional behaviour is behavioural intention — the person's stated readiness to perform it. Intention, in turn, is a weighted function of two independent predictors. The first is the attitude toward the behaviour, computed as the sum of the person's salient behavioural beliefs (the perceived consequences of acting) multiplied by their evaluation of each consequence. The second is the subjective norm, the perceived social pressure to act or not act, computed as the sum of normative beliefs (what specific referents — family, peers, superiors — think one should do) multiplied by the person's motivation to comply with each referent. A regression-style weighting reflects that for some behaviours attitudes dominate, while for others the social component carries more force.

Measurement in TRA follows the principle of compatibility: every construct must be specified across four elements — action, target, context, and time. A prediction of whether a civil servant will refuse a bribe on a particular file cannot be derived from a global attitude toward corruption; it requires an attitude measured at the same grain as the behaviour. Beliefs are elicited rather than imposed, so that only the salient beliefs actually held by the population studied enter the model. The theory deliberately treats demographic factors, personality traits, and broad values as "external variables" that influence behaviour only indirectly, through their effect on beliefs, attitudes, and norms. This makes TRA a parsimonious, testable account rather than a catalogue of every possible influence.

Empirical applications span public health, consumer research, voting, and ethical conduct. Researchers have used TRA to model condom use, smoking cessation, blood donation, seat-belt compliance, and dishonesty in organisations. In India, the framework appears in UPSC General Studies Paper IV (Ethics, Integrity and Aptitude) as part of the syllabus treatment of attitude — its formation, structure, function, and its relation to thought and behaviour. Aspirants are expected to deploy TRA to explain why an officer's privately held value of probity may or may not translate into honest action: the intervening role of perceived peer norms within a department, and the perceived consequences of acting, become the operative levers. The model is frequently paired in answer-writing with the Tripartite (ABC) model of attitude and with discussions of moral attitudes in administration.

TRA must be distinguished from its own successor, the Theory of Planned Behaviour (TPB), which Ajzen advanced in 1985 and 1991 by adding a third predictor — perceived behavioural control — to capture behaviours that are not wholly under volitional command. This is the single most important boundary condition: TRA fails precisely where the actor lacks the resources, skills, or opportunity to carry out an intention, and TPB was built to repair that gap. TRA is also distinct from the tripartite ABC model, which decomposes a single attitude into affective, behavioural, and cognitive components without modelling intention. It differs further from cognitive-dissonance theory, which addresses the post-decisional adjustment of attitudes, and from the elaboration-likelihood model of persuasion, which concerns how attitudes are changed rather than how they cause action.

The principal controversy surrounding TRA is its rationalist premise. Critics, including proponents of dual-process and habit-based models, note that much behaviour is automatic, impulsive, or habitual and bypasses deliberate intention altogether; the model is weakest for addictive and routinised conduct. The subjective-norm component has been the least powerful predictor across meta-analyses, prompting reformulations that distinguish injunctive from descriptive norms. Ajzen and Fishbein themselves responded to the limitations with TPB and, in 2010, with the integrative Reasoned Action Approach, which broadened the belief categories and incorporated background factors more formally. The model's assumption of stable, accessible beliefs has also been questioned where attitudes are weak or newly formed.

For the working practitioner — whether a policy designer running a behaviour-change campaign or a civil servant analysing institutional integrity — TRA supplies a diagnostic vocabulary. It directs attention away from exhortation about values and toward two manipulable targets: the perceived consequences of an act and the social expectations surrounding it. Public-health messaging, anti-corruption framing, and compliance design all gain precision when an intervention is matched to whichever determinant actually drives intention in the target population. For the examination candidate, mastery of the Fishbein-Ajzen chain — belief to attitude and norm, to intention, to behaviour — offers a rigorous structure for case-study reasoning about why good intentions falter and how administrative environments can be engineered to align intention with conduct.