The Committee and the Board on Children, Youth, and Families convened in September a workshop to discuss ways to foster greater collaboration and sharing of information among principal investigators of several longitudinal surveys of children. Among many topics discussed were issues of coverage and balance of content, sampling design and weighting, measurement and analysis, field operations, legitimation and retention of cases, data disclosure and dissemination, and resources available for longitudinal studies. The workshop was sponsored by the National Institute on Justice.