The long-term goal of this research is to develop multi-level interventions that optimize cancer screening for adults living in the US. The objective of this 12-month pilot study is to systematically explore associations between social network characteristics and cancer screening behaviors among African American, Caucasian, and Latino adults living in Western New York. The primary research questions being addressed are, "In what ways do social network characteristics influence participation in prostate, breast, and colorectal cancer screening?" and "Is there variation in the ways that social network characteristics influence cancer screening behaviors for African Americans, Caucasians, and Latinos?" The rationale for the study is that, once researchers know how network characteristics influence prostate, breast, and colorectal cancer screening for these subpopulations, appropriate multi-level interventions can be developed and tested.