1. Affectivity and reference: Concepts, methods, and techniques in the study of communication development of 6- to 8-month-old infants;Adamson,1982
2. Affect and attention: Infants observed with mothers and peers;Adamson;Child Development,1985
3. Expression through affect and words in the transition from infancy to language;Bloom,1988
4. Expression of affect and the emergence of language;Bloom;Child Development,1987