NTT psycholinguistic databases "Lexical Properties of Japanese" were developed for the large number of Japanese words and characters. The databases contain word and character information such as familiarity, frequency of occurrence, appropriateness of accent, appropriateness of orthography, subjective complexity, and other important psycholinguistic properties. Words and characters satisfying multiple search conditions can be very efficiently obtained for stimuli in psycholinguistic experiments, which was impossible without the database in past days. The databases provide a basis for psycholinguistic research on Japanese.
