Communication and congenital deafblindness. 1. Congenital deafblindness and the core principles of intervention (English)Part 1 describes how seeing and hearing partners, can try to understand deafblimdness better, the characteristic features and what these mean for the communication, prerequisits, learning strategies, a theoretical framework and video clips on dvd. The series of booklets are written to inspire all partners involved in communication with deafblind persones. The booklets are intended to supplement the courses and the counselling available for the