The problem of development is central in the study of emotional life for
two basic reasons. First, emotional life so clearly changes
(dramatically in the early years) with new emotional reactions emerging
against the backdrop of an increasing sensitivity to context and with
self-regulation of emotion emerging from a striking dependence on
regulatory assistance from caregivers. Such changes demand developmental
analysis. At the same time, understanding such profound changes will
surely inform our understanding of the nature of development more
generally. The complexity of emotional change, when grasped, will reveal
the elusive nature of development itself. At the outset, we know that
development is complex. We must take seriously what is present at any
given phase, including the newborn period, because a developmental
analysis disallows something emerging from noth- ing. Still, it is
equally nondevelopmental to posit that new forms of new processes were
simply present in their precursors. Rather, development is characterized
by transformations in which more complex structures and organization
"emerge" from new integration of prior components and new capacities.
These new forms and organizations cannot be specified from prior
conditions but are due to transactions of the evolving organism with its
environment over time. They are not simply in the genome, and they are
not simply conditioned by the environment. They are the result of the
develop- mental process.