This Child Development Associate (CDA) training module, the fifth in a series of 16, focuses on preparing trainees in a bilingual/bicultural preschool teacher training program to help young children to develop social skills. The text of the module deals with: (1) fundamental principles of social development, (2) factors which influence social development, (3) the importance of good social adjustment, (4) cultural differences in social development and (5) the sequence of social development. The module includes a pre-test and a posttest of the trainee's understanding of the material and a social skills checklist for assessing children's social development. This module focuses on the specific behaviors which directly relate to the functional area of social development within CDA Competency 4, which is the ability to organize and sustain the positive functioning of children and adults in a group in a learning environment. (BH)