Maternal expression of communicative intentions and pragmatic fine tuning in early infancy

This study focuses on pragmatic characteristics of infant-directed speech and pragmatic fine tuning during the first 18 months of life. The subjects of the study were a mother–child dyad involved in a longitudinal/observational study in a familial context. Audiovisual recordings were transcribed according to the conventions of the Child Language Data Exchange System ([MacWhinney, 2000] and [MacWhinney and Snow, 1990]). The Ninio and Wheeler's (1988) system for coding communicative intentions was adapted.The results of this research show that most of the communicative exchanges identified at 14, 20 and 32 months by Snow, Pan, Imbens-Bailey, and Herman (1996) appear in mother–child interaction from the beginning, while other communicative interchanges appear later. With respect to speech acts, the results highlight, from an early age, the general tendencies discussed by Snow et al. and some novelties. Interestingly, changes in some pragmatic measures were identified around 8 months of age, and the appearance of new communicative interchanges also took place around this age. These changes are interpreted as maternal adjustments to the child's communicative competence.     

Recipient design in tacit communication

The ability to design tailored messages for specific listeners is an important aspect of human communication. The present study investigates whether a mere belief about an addressee’s identity influences the generation and production of a communicative message in a novel, non-verbal communication task. Participants were made to believe they were playing a game with a child or an adult partner, while a confederate acted as both child and adult partners with matched performance and response times. The participants’ belief influenced their behavior, spending longer when interacting with the presumed child addressee, but only during communicative portions of the game, i.e. using time as a tool to place emphasis on target information. This communicative adaptation attenuated with experience, and it was related to personality traits, namely Empathy and Need for Cognition measures. Overall, these findings indicate that novel nonverbal communicative interactions are selected according to a socio-centric perspective, and they are strongly influenced by participants’ traits.