Examination of infant vocalization patterns across interactive and noninteractive contexts may facilitate better understanding of early communication development. In the current study, with 24 infant-parent dyads, infant volubility increased significantly when parent interaction ceased (presenting a "still face," or SF) after a period of normal interaction ("face-to-face," or FF). Infant volubi...

Canonical babbling is a critical milestone for speech development and is usually well in place by 10 months. The possibility that infants with autism spectrum disorder (ASD) show late onset of canonical babbling has so far eluded evaluation. Rate of vocalization or "volubility" has also been suggested as possibly aberrant in infants with ASD. We conducted a retrospective video study examining v...

Ten mothers were observed prospectively, interacting with their infants aged 0 ; 10 in two contexts (picture description and noun description). Maternal communicative behaviours were coded for volubility, gestural production and labelling style. Verbal labelling events were categorized into three exclusive categories: label only; label plus deictic gesture; label plus iconic gesture. We evaluat...

Akhtar et al. (2016) suggest that individuals with autism spectrum disorder (ASD) often have motor difficulties and that such motor difficulties could reduce the ability of those individuals to produce speech or speech-related sounds. Akhtar et al. also indicate that it could be counterproductive to focus on social motivation to communicate as a factor underlying reduced volubility in this grou...

This paper deals with openings and closings in 400 service encounters tourist offices situated Belgium’s two main language communities, Flanders Wallonia, the north of France south Netherlands. On basis a detailed, bottom-up quantitative analysis structural properties closings, we draw part interactional profiles office encounters. Differences between four regions are shown to be related degree...

Katie M. Belardi: The Nature and Nurture of Canonical Babbling in Neurodevelopmental Disorders (Under the direction of Linda R. Watson) An infant's language develops significantly during the first year of life. Language development is facilitated by an interaction between genetics and environment. Measures of vocalization development, such as canonical babbling and volubility, and the language ...

A full account of human speech evolution must consider its multisensory, rhythmic, and cooperative characteristics. Humans, apes, and monkeys recognize the correspondence between vocalizations and their associated facial postures, and gain behavioral benefits from them. Some monkey vocalizations even have a speech-like acoustic rhythmicity but lack the concomitant rhythmic facial motion that sp...