Behavioural factors (including an individual's actions, body language, verbal communication, habits, and vocal intonation) both express and shape their personal strategies for living, that is, the cognitive and behavioural plans they employ to manage everyday life.
From the perspective of Alfred Adler (1927/1958), behaviour reflects a person's unique style of life, an organised pattern of beliefs, goals, and coping strategies developed early in life to achieve significance and belonging, meaning that observable behaviour cannot be understood separately from underlying purposes and interpretations (Adler, 1958).
Aaron T. Beck (1976) further demonstrated that behaviour is closely linked to cognitive factors because thoughts, assumptions, and schemas influence behavioural choices, while repeated behaviours reinforce or modify these cognitive structures through feedback from experience (Beck, 1976).
Albert Bandura's Social Cognitive Theory (1986) expanded this understanding by proposing reciprocal determinism, whereby behaviour, cognitive processes (such as self-efficacy beliefs), and environmental or contextual factors continuously influence one another rather than operating in a simple cause-and-effect sequence (Bandura, 1986).
Behaviour also interacts with motivational factors because actions are directed toward personally valued aims, hopes, and goals, as explained by Edward L. Deci and Richard M. Ryan's Self-Determination Theory (1985, 2000), which shows that behaviour is more persistent and psychologically healthy when motivated by the fulfilment of the basic psychological needs for autonomy, competence, and relatedness (Deci & Ryan, 1985; Ryan & Deci, 2000).
Behaviour likewise both influences and is influenced by emotional factors, with Richard S. Lazarus's Cognitive-Motivational-Relational Theory (1991) demonstrating that emotional responses depend on individuals' appraisals of events and subsequently guide behavioural coping strategies, while behavioural success or failure alters future emotional experience (Lazarus, 1991).
Physiological factors also interact dynamically with behaviour through bidirectional relationships between the brain, endocrine system, autonomic nervous system, and behaviour; for example, Walter B. Cannon's concept of homeostasis (1932) and Hans Selye’s General Adaptation Syndrome (1956) explain how physiological stress responses influence behavioural reactions, while habitual behaviours such as exercise, sleep, and relaxation modify physiological functioning (Cannon, 1932; Selye, 1956).
Behaviour is equally embedded within contextual factors, including family, culture, socioeconomic circumstances, and social systems, as described by Urie Bronfenbrenner's Ecological Systems Theory (1979), which proposes that behaviour develops through ongoing interactions between individuals and multiple environmental systems ranging from immediate relationships to broader cultural influences (Bronfenbrenner, 1979).
Spiritual factors also shape behavioural strategies by providing meaning, values, purpose, and moral direction. Kenneth I. Pargament (1997) demonstrated that religious and spiritual beliefs influence behavioural coping strategies during stress by guiding decisions, interpretations, and sources of support (Pargament, 1997).
Finally, behaviour reflects and influences core states, understood as an individual's integrated sense of self, identity, and momentary state of psychological functioning, consistent with Carl R. Rogers's theory of the self (1951), which argues that congruence between self-concept, lived experience, and behaviour promotes psychological wellbeing, whereas incongruence contributes to distress and maladaptive behavioural patterns (Rogers, 1951).
Together, these perspectives demonstrate that behavioural factors are not isolated phenomena but are continuously shaped by and, in turn, shape cognitive, emotional, motivational, physiological, spiritual, contextual, and core dimensions of personhood through complex reciprocal interactions. In relation to personal life strategies (the enduring cognitive and behavioural patterns by which individuals seek to manage life as a whole), a Christian understanding of psychology views these as emerging through the dynamic interaction of observable behaviours (actions, speech, body language, habits, and intonation), core internal states (beliefs, attitudes, values, identity, and worldview), cognitions, motivations, emotions, physiology, and environmental influences, all understood within the Biblical doctrine that human beings are integrated image-bearers of God whose hearts direct their lives while remaining embedded in social, physical, and spiritual contexts.
Scripture consistently teaches that the "heart" (Hebrew lēb; Greek kardia) functions as the centre of thought, desire, moral choice, and action, so that behaviour both expresses and reinforces inner dispositions (Proverbs 4:23; Matthew 12:34–35; Luke 6:45), while renewed thinking through the Holy Spirit transforms both internal motives and external conduct (Romans 12:2; Ephesians 4:22–24; Philippians 2:5–13).
Within Christian psychology, Gary R. Collins (1988, 2007) integrated Biblical theology with psychological science, emphasising that genuine change involves spiritual growth alongside cognitive, emotional, relational, and behavioural transformation. Eric L. Johnson (2007) argued that psychology should be understood through a comprehensive Christian worldview in which Scripture provides the metatheoretical framework for interpreting human functioning. Stanton L. Jones and Richard E. Butman (2011) demonstrated how psychological theories can be critically evaluated and integrated with Christian doctrine, recognising both common grace and the noetic effects of sin. Siang-Yang Tan (2011) highlighted the central role of spiritual disciplines, prayer, and dependence upon the Holy Spirit in reshaping beliefs, emotions, motivations, and behaviours. Mark R. McMinn (2011) showed how explicitly Christian counselling integrates theological virtues such as confession, forgiveness, and redemption into evidence-based therapeutic practice.
Together these contributors reveal that personal life strategies are neither purely behavioural nor purely cognitive but arise from reciprocal interactions among beliefs, motivations, emotions, physiology, actions, and environmental contexts. Christian theology deepens this understanding by affirming that these interactions are ultimately oriented either toward God or away from Him, that sin disrupts every dimension of human functioning (Genesis 3; Jeremiah 17:9; Romans 3:23), and that through union with Christ, the renewing work of the Holy Spirit, participation in the Christian community, and faithful obedience, transformed beliefs progressively produce transformed emotions, motivations, behaviours, relationships, and life strategies (John 15:1–11; Galatians 5:22–23; Colossians 3:1–17; James 2:14–26).