About 1 in 90 American children born in the late 1990's will develop malignant melanoma in their lifetimes. Sun exposure in childhood appears to be the most important preventable risk factor for this disease. This project will develop a tailored, risk-based, written intervention, which will be mailed to parents of children age 6-9 years in the spring of each year. The tailored intervention will utilize the Precaution Adoption Process Model, which has a primary focus on risk perception and suggests that there are seven stages leading to sustained health behavior change. The effectiveness of the intervention will be tested using a randomized controlled trail involving 1000 children recruited from health care facilities and community locations at age 5-6 years and followed for 3 years using telephone interviews to assess sun protection behaviors and skin exams to observe changes in melanocytic nevi, freckling, and tanning.