To analyze the characteristics of standard Thai tones, namely, fundamental frequency, fundamental frequency range and duration, produced by Japanese speakers with high and low experience in Thai in comparison to those of Thai native speakers.... This research was conducted by having the participants produce a set of monosyllabic words in citation forms and in devised sentences in order to show how Japanese speakers with varying experience in Thai produce the Thai tones, and how the Thai tones produced

with linguistic honorifics. This study aims to compare linguistic honorifics in three different languages; i.e., Japanese, Thai, and English, and to examine their relationship with the cognitive systems of the speakers.To analyze linguistic features indicating... to English, is considered to have more such ways. It is inferred that age and status are determinants of honorific forms. Experiments of attention to and categorization of people and things were conducted on 31 Japanese, 43 Thai and 30 English native speakers

” verbs in the two languages and the speakers’ cognitive system realized through the behavior of categorization and attention. The data was collected from dictionaries, Chulalongkorn University Corpus Base and ten native speaker of Thai and Japanese. A... are subcategorized according to the shape of objects. Experiments were conducted so as to find out whether speakers of Thai and Japanese categorize things and pay attention to things in the same way as the subcategorization of “put” verbs in their languages suggest