This research investigates sound symbolism: the relationship between particular speech sounds and perceived meanings. By analysing animal names in English, French, and Spanish, it examines whether consonants, vowels, and syllable stress correspond with characteristics such as size and danger, helping explain language evolution and potentially informing language learning and word creation.

This research investigates sound length in speech, comparing its physical and mental representation across languages. While English treats length as phonetic variation, languages like Japanese use it meaningfully. The study focuses on Persian to improve speech recognition and therapy, helping determine how sound duration is perceived, produced, and processed cognitively.