In two related experiments the question was investigated whether the hypothesized bilateral representations of concrete nouns are equivalent or not. With different stimulus materials and display conditions the lateralization effect of abstract and concrete nouns in a lexical decision task (Day 1977) was replicated. In a lateralized memory-search task the memory-search rate for concrete nouns differed with respect to the visual fields of probe exposition whereas abstract nouns showed no slope difference. On the contrary abstract nouns yielded a intercept difference favoring the right visual field. For concrete nouns a visual field difference was not observed with respect to the intercept. These results corroborate the findings of Day (1977) and provide further information on right hemisphere language processing.