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April 10, 2020 Friday 01:22:19 AM IST

Children have very precise expectations about adults' communicative actions

Parent Interventions

A study published in the advanced edition of the journal Cognition presents the results of a series of experiments carried out on Spanish and Turkish babies aged 12 to 15 months. The children watched animated videos with big and small geometric figures simulating adults and children talking to each other. The study was carried out by Núria Sebastián Gallés, head of the Speech Acquisition and Perception (SAP) research group at the Center for Brain and Cognition (CBC) of the Department of Information and Communication Technologies (DTIC) at UPF, together with Gaye Soley, a researcher with the Department of Psychology at Bo?aziçi University in Istanbul (Turkey).

In two of the conditions (Figure 2 a and b of the work), the respective figures communicated congruently, that is, the adult figure addressed the child figure using IDS - infant-directed speech, or another adult using ADS - adult-directed speech. In the other conditions (Figure 2 c and d of the work) this pattern is altered incongruently: the adult spoke to another adult as if the latter were a child, or spoke to the child as if it were an adult. The results showed that both Spanish and Turkish infants aged between 12 and 15 months watched for longer when presented with incongruent than with congruent events. This increased gaze time is interpreted as a reaction of surprise at an unexpected situation.

In the last experiment, the stimuli were identical to those of experiments 1 and 2, but the characters no longer "looked" at each other (Figure 4). In this situation, the babies did not show any differences in their gaze time between congruent and incongruent conditions. These results indicate that babies interpret that the figures are not communicating with each other as they do not keep eye contact.

These findings raise important questions about the mechanisms whereby infants' expectations are formed. "Our results show that infants have formed expectations not only about the recipients of infant-directed speech, but also the recipients of adult-directed speech, suggesting that their expectations are not formed based only on their own experiences, but also on their observations of interactions between adults", Soley and Sebastián claim.


Babies may develop these expectations as they are exposed to different registers of speech when others around them communicate with babies and adults. If so, infants' expectations may be different depending on how the adults of their environments produce speech. This could be studied and extended to other forms of communication such as gestures or actions. Infants' expectations regarding recipients of speech, infants or adults, point to the social importance of these different styles of communication and suggest that early on, the acoustic signs associated with these different registers of speech are accessible to babies and guide their social expectations.


(Content and Image Courtesy: https://www.eurekalert.org/pub_releases/2020-04/upf--chv040720.php)



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