After selecting the structures described above for A, C, and E, we tested a series of models nested within that structure. These submodels and the corresponding statistics are described in Table 2. Social selection pathways from SELF to concurrent PEER were constrained to be equal across the different ages (Model 15). In addition, the correlation between common C factors could be fixed to 1 (Model 20). Other nested models resulted in a decline in fit and their constraints were not included in the final model. The final models are presented in Figure 2A–C.
