Loglan La Logla Created by James Cooke Brown Date 1955 Setting and usage engineered language for testing the Sapir–Whorf hypothesis and other linguistic research Purpose Constructed language engineered language logical language Loglan Sources eight of the most common languages: English, Chinese (Beijing dialect), Hindi, Russian, Spanish, French, Japanese, German Language codes ISO 639-3 – Glottolog None IETF art-x-loglan