1. Introduction: Theory and Description in Interpersonal Grammar across Languages J. R. Martin, Beatriz Quiroz and Giacomo Figueredo; 2. Interpersonal Grammar in Spanish Beatriz Quiroz; 3. Interpersonal Grammar in Khorchin Mongolian Dongbing Zhang; 4. Interpersonal Grammar in Mandarin Pin Wang; 5. Interpersonal Grammar in Tagalog: Assessment Systems J. R. Martin and Priscilla Cruz; 6. Interpersonal Grammar in Pitjantjatjara David Rose; 7. Interpersonal Grammar in Brazilian Portuguese Giacomo Figueredo; 8. Interpersonal Grammar in British Sign Language Luke Rudge; 9. Interpersonal Grammar in Scottish Gaelic Tom Bartlett; Index.