Early child development is influenced by various genetic and environmental factors. This study aims to identify factors that affect the phonological awareness of preschool and first grade children. Based on a sample of 330 German-speaking children (mean age = 6.2 years) the following domains were evaluated: Parent factors, birth and pregnancy, child factors, and leisure time activities (all based on parent report). Regression analysis provided information on the relative contribution of each predictor on the explained variance. Results indicate that the variables "migration background," "child age," "child intelligence," "smoking during pregnancy," "language difficulties" (impairments of word expression, grammatical deficits, stutter), and "watching TV" have a significant influence on phonological awareness. (Contains 3 tables and 1 figure.)