10/09/2025
THE EVOLUTION OF PURPOSE ACROSS THE LIFESPAN
The Evolution of Purpose Across the Lifespan: A Spiral Model of Meaning Development
Michael Cornwall, PhD, PsyD
Cornwall Counseling Group
Las Vegas, Nevada
Abstract
This paper proposes a lifespan model of human development organized around Purose rather than cognition, morality, or psychosocial conflict. The Purpose Developmental Model (PDM) articulates five distinct stages: (1) Safety and Belonging (birth–12), (2) Identity and Expression (12–20), (3) Intimacy and Contribution (20–40), (4) Authenticity and Legacy (40–65), and (5) Wisdom and Unity (65+). Each stage reflects a primary human task oriented toward finding and embodying purpose appropriate to one’s developmental context. This model integrates insights from Erik Erikson’s psychosocial theory, Abraham Maslow’s hierarchy of needs, Viktor Frankl’s logotherapy, Carl Jung’s individuation process, and contemporary emotional intelligence (EI) frameworks. The PDM posits that purpose is the fundamental motivational and integrative principle of psychological development — the thread that connects survival, identity, love, work, creativity, and transcendence.
The Foundation of Purpose
Human development has often been understood through the lenses of cognition (Piaget), psychosocial conflict (Erikson), morality (Kohlberg), or self-actualization (Maslow). Each of these models describes how people grow — yet they often stop short of explaining why. Purpose provides that missing 'why.'
Purpose represents the intrinsic drive to make meaning through participation, expression, and connection. It gives direction to human motivation and cohesion to human identity (Damon, Menon, & Bronk, 2003). The Purpose Developmental Model (PDM) reframes traditional developmental theory by asserting that purpose is not an outcome of development but its organizing principle. Each life stage centers on a different purpose theme — a psychosocial focus through which meaning, motivation, and selfhood evolve (Erikson, 1959).
Stage One: The Purpose of Safety and Belonging
The earliest years of life (birth through 12) are defined by dependency and trust. The child’s central purpose is to find security within relationships — to experience that belonging and safety are unconditional. Erikson’s (1959) first two stages, trust vs. mistrust and autonomy vs. shame and doubt, parallel this phase. Yet whereas Erikson frames these in terms of psychosocial conflict, the PDM emphasizes purpose realization: the sense that one’s existence has inherent value within a social system. Maslow (1943) identified belonging as a core need after physiological and safety needs, but the PDM treats belonging as a developmental purpose, not a need — a stage of learning in which the child internalizes that safety and belonging are achievable through connection, not compliance. This realization becomes the bedrock of later selfhood and resilience.
Stage Two: The Purpose of Identity and Expression
As adolescents move toward autonomy, the central purpose shifts to identity and expression. While Erikson’s (1968) identity vs. role confusion captures the search for self-definition, the PDM expands this to include expression — the active, creative projection of identity into the social world. Purpose at this stage is not only to find the self but to test it through experimentation and relational feedback. Jung’s (1961) concept of the persona and shadow — the integration of the public and private self — aligns closely here. Expression becomes the laboratory of authenticity. From an emotional intelligence perspective (Goleman, 1995), this stage reflects the development of self-awareness: learning that authentic expression invites genuine connection.
Stage Three: The Purpose of Intimacy and Contribution
Young adulthood (20 through 40) introduces the task of connected purpose: integrating personal meaning with shared experience. While Erikson’s (1968) intimacy vs. isolation describes the tension of closeness, the PDM highlights contribution as the evolution of intimacy — the idea that purpose expands when shared. Maslow (1968) suggested that self-actualization involves creative productivity and altruism. Similarly, Frankl (1959) emphasized that meaning arises through love and work. Purpose here is inherently relational: people discover that fulfillment comes from offering themselves to something beyond the ego. When this purpose is thwarted, individuals may achieve success but feel hollow — what Jung might call a failure to connect the outer and inner lives.
Stage Four: The Purpose of Authenticity and Legacy
Middle adulthood (40 through 65) brings a profound reorientation from accumulation to meaning. The individual begins to ask, 'What is mine to give? What endures of me?' This is the stage where purpose shifts from doing to being with intention. Erikson’s (1982) generativity vs. stagnation resonates here, yet the PDM reframes it through authenticity and legacy. Generativity can exist without authenticity — one can produce or mentor while remaining disconnected from personal truth. The purpose of this stage is to align inner truth with outward expression — to live one’s values fully and intentionally (Jung, 1933; Frankl, 1969).
Stage Five: The Purpose of Wisdom and Unity
In late adulthood, (65 and through), purpose transcends personal achievement and becomes integrative. The self seeks unity — a sense that all life stages, relationships, and experiences belong to a coherent whole. This mirrors Erikson’s (1982) integrity vs. despair, but the PDM interprets it not as a reckoning but as a synthesis. Frankl (1985) and Jung (1959) both saw this stage as one of reconciliation with mortality. Maslow (1971) later added a sixth stage to his hierarchy — self-transcendence — describing it as the expansion of the self beyond individual identity into unity with humanity or the cosmos. The elder becomes a steward of meaning.
Revisiting and Realigning Purpose
Although the PDM is presented sequentially, it is not strictly linear. Purpose formation follows Erikson’s (1959) idea of epigenesis — each stage builds upon the preceding one but remains dynamically accessible throughout life. Strengths and weaknesses formed at earlier stages are living structures that influence subsequent meaning-making. Psychological development is not strictly chronological but recursive. Jung (1961) described individuation as a lifelong spiral — the conscious self repeatedly encountering earlier unconscious material. Research in adult development (Baltes & Baltes, 1990; Kegan, 1982) supports this view: meaning systems are plastic and can be reorganized through reflection, therapy, or spiritual experience. Revisiting earlier stages of purpose building is not regression but reintegration. Alignment with a more profound purpose occurs not by abandoning the present stage but by integrating unfinished tasks of the past. Frankl (1959) emphasized that meaning can be discovered under any conditions, but only through attitudinal change. Purpose alignment is therefore not bound by age but by existential readiness. Development is best understood as a spiral, where each revolution revisits familiar themes from a higher level of consciousness. Every return deepens wisdom, allowing earlier purposes to be reinterpreted rather than relived.
Conclusion
The Purpose Developmental Model (PDM) reframes human development as the progressive realization of meaning through five evolving purposes: Safety and Belonging, Identity and Expression, Intimacy and Contribution, Authenticity and Legacy, and Wisdom and Unity. Where other theories emphasize conflict or cognition, the PDM emphasizes coherence. It assumes that to live purposefully is to live psychologically whole — that belonging, identity, connection, authenticity, and unity are not separate achievements but one unfolding of meaning. Purpose is not found but cultivated; not fixed but evolving; not given but lived into.
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