Behavioural assessment in personality is a systematic method of evaluating an individual's personality by observing and measuring actual behaviour rather than relying only on self-reports, interviews, or projective techniques. It is based on the principles of behavioural psychology, particularly the work of B. F. Skinner, John B. Watson, and Albert Bandura. Behavioural assessment assumes that personality is reflected in observable actions, learned responses, and interactions with the environment. It focuses on identifying how environmental factors, reinforcement, learning experiences, and cognitive processes influence behaviour across different situations. The primary objective of behavioural assessment is to understand the relationship between antecedents, behaviour, and consequences, commonly referred to as the ABC model. Antecedents are events or situations that occur before a behaviour, behaviour refers to the observable action itself, and consequences are the outcomes that follow the behaviour and influence its future occurrence. By analysing these components, psychologists can identify patterns that contribute to adaptive or maladaptive personality characteristics. Direct observation is one of the most widely used behavioural assessment methods. In this approach, trained observers record an individual's behaviour in natural settings such as home, school, workplace, or clinical environments. Observations may be structured, where specific behaviours are recorded using predetermined criteria, or unstructured, where behaviour is noted more freely. This method provides objective information about how individuals actually behave rather than how they describe themselves. Behavioural interviews are another important assessment technique. These interviews focus on specific behaviours, situations, and responses instead of exploring unconscious motives or abstract personality traits. Individuals are asked to describe how they behaved in particular circumstances, allowing psychologists to