Although considerable research exists on consumer processing of nutrit
ion labeling and package claims, less is known about consumer interpre
tation of nutrient content claims in advertising. This is important be
cause product advertising often provides a significant first step for
consumers in learning new nutrition information. Yet, unlike package c
laims, Nutrition Facts Panels are often not available for consumers du
ring the processing of such advertising claims. Therefore, the authors
examine the following research questions: (1) Do consumers misinterpr
et (i.e., overgeneralize) common nutrient content claims in advertisin
g? If so, under what conditions does this occur? and (2) Can various t
ypes of disclosure statements remedy this problem? To address these qu
estions, the authors interview a total of 365 primary food shoppers in
three geographically dispersed malls in the United States in a betwee
n-subjects experiment. Misleading generalizations, beyond those of con
trol ad claims, are found for general and specific nutrient content cl
aims. Ad disclosure type, ad claim type, and nutrition knowledge all s
eparately influence nutrient content and disease risk measures. Evalua
tive disclosures reduce misleading generalizations to a greater extent
than do absolute or relative disclosures. The authors offer implicati
ons for public policy and food marketers.