Imagery (I), concreteness (C), meaningfulness (m) and ease of learning (E) values for 400 Japanese nouns were measured. I, C and E were rated on 7-point scales. Meaningfulness was obtained in terms of the number of free associations in 30 seconds. There were considerable positive correlations among I, C and m. But E yielded negligible correlations with the above three attributes. In Experiment II, to test the validity of Experiment I, the recall as a function of varing levels of each attribute was investigated, holding the levels of other attributes constant. As level of attributes changed, the recall changed significantly for I, C and E, but not for m. This last finding with respect to m was expected under the condition of matched level of I.