We previously observed students gesturing during a symmetry and group theory activity. This prompted additional interviews, wherein we attempted to understand the semiotic function of these gestures. We report here on the gestures that students used in this context to represent symmetry elements, symmetry operations, and other related ideas. In…

Effective communication is vital in both social and professional contexts, yet the nuanced relationship between nonverbal communication (NVC) and affectivity, particularly in relation to demographic factors, has not been fully understood. The lack of clarity in how these elements interact poses a challenge in developing tailored communication…

Public speaking classes should ideally produce students whose speeches are favorably received by an audience. Unfortunately, we actually know very little about how non-expert audiences assess such speeches. Given this information gap, the present study asked untrained public speakers to watch and rate a variety of speeches. Participants were also…

The study explores whether racial identity and appearance-based trustworthiness judgments can affect recognition of pain in medical students differing in levels of resting heart rate variability (HRV), a measure of parasympathetic control of the heart. After undergoing HRV assessment, 68 medical students (37 females) participated in a dynamic pain…

Nudge theory, a strategy to influence decision-making, holds promise for enhancing an adult's use of evidence-based strategies during a read-aloud experience with a young child. This study examined the effectiveness of a nudge theory approach in increasing adult gesture use during a book-reading activity with a young child. Notably, 31 U.S.…

Studying early language development has been a challenging task throughout the years. Earlier studies mostly documented language competence only after toddlers had started producing their first words. Theoretical and methodological advances in this domain brought about more sophisticated ways of probing into early development by exploiting overt…

As technology becomes ubiquitous in the homes of many families, children learn to incorporate touchscreen devices into their everyday activities. The present study explored young children's role in shaping their gaming experience to maintain social interactivity. Twenty-nine children at 2.5 years old in the U.S. played a non-educational game on a…

Laughter and smiling are frequently experienced in social settings, yet more research is required to delineate their development and dynamics. We investigated toddlers' and parents' shared positive expressions in playful interactions. We observed eighty 30-month-old toddler-parent dyads in two phases of 8 min in length. In each, one person was…

This paper aims to understand how primary students use gestures to solve partition tasks and to what extent these gestures may promote fraction understanding. Analysis of six selected students' answers to partitioning tasks, classroom observation, and post-lesson interviews indicates that co-thought representational gestures play a critical role.…

One limitation of the naturalistic observation method is that it is understudied how accurately personal relationships may be judged by observers in real-life settings. To assess this judgment accuracy, we observed 285 dyads of individuals in public places and then asked whether they were affiliated or strangers. We found that human observers were…

Gestures accent and illustrate our communication. Although previous studies have uncovered the positive effects of gestures on communication, little is known about the specific cognitive functions of different types of gestures, or the instantaneous multi-brain dynamics. Here we used the fNIRS-based hyperscanning technique to track the brain…

Projecting confidence during conversation or presentation is a critical skill. To effectively display confidence, speakers must employ a blend of verbal and non-verbal signals. A predictive model that leverages rich multimodal cues to measure a speaker's confidence must also mitigate biases that develop through data labelling practices, inherent…

Meaningful gestures enhance degraded speech comprehension in neurotypical adults, but it is unknown whether this is the case for neurodivergent populations, such as autistic individuals. Previous research demonstrated atypical multisensory and speech-gesture integration in autistic individuals, suggesting that integrating speech and gestures may…

A fundamental challenge in the cognitive sciences is discovering the dynamics that govern behavior. Take the example of spoken language, which is characterized by a highly variable and complex set of physical movements that map onto the small set of cognitive units that comprise language. What are the fundamental dynamical principles behind the…

Although previous research provides insights into how gestures function as a pedagogical tool, relatively little is known about how gesture is related to language, together creating a key meaning-making teaching resource. Drawing on the system of logico-semantic relations in Systemic Functional Linguistic theory and McNeill's description of…