Diverging Pathways, Developmental Transformations, Multiple Etiologies and the Problem of Continuity in Development

Could homotypic continuity be assumed, determining the degree of continuity in individual development over time would be straightforward. But simple stability is rarely obtained for several reasons, as will be illustrated by research examples. Data from an ongoing longitudinal study following children from birth through age 10–11 illustrate impressive continuity over time. Yet, determining the degree of coherence or continuity in individual adaptation hinges on resolving four key conceptual issues: developmental transformations, branching developmental pathways, increasing behavioral complexity and multiple etiologies. Considering such complexities not only will enable more powerful demonstrations of continuity, but also will lead to an enhanced understanding of development.