Fortunately, missed opportunities can be remedied. Developments in secure base use after infancy are readily accessible to direct observation, as are corresponding changes in caregiver behavior. Figure 1 highlights key steps in the development of secure base behavior and representations from infancy through adolescence. The contexts and patterns of caregiver support that organize developing secure base use are on the left side of the table. These range from sensitive and cooperative interaction and explicit secure base teaching in infancy, to a supervision partnership beginning in early childhood, to service as an experienced listener and testing ground for emerging beliefs about self, others, and relationships beginning in middle childhood and early adolescence.