In this supplement, the papers presented at the International Symposiu
m on Breakfast and Performance in Napa, CA in 1995 are summarized and
integrated with data published since that time. In particular, the foc
us is on issues of research design, measurements, mechanisms, potentia
l effect modifiers (eg, age), and relevance for public policy. No defi
nitive conclusions can be drawn from the existing data on either the l
ong-and short-term benefits of breakfast on cognition and school learn
ing or the mechanisms that mediate this relation. The pooled data sugg
est that omitting breakfast interferes with cognition and learning, an
effect that is more pronounced in nutritionally at-risk children than
in well-nourished children. At the very least. breakfast consumption
improves school attendance and enhances the quality of the students' d
iets.