Conversational Agents to Promote Children’s Verbal Communication Skills

The fundamentals of verbal communication skills are developed during childhood, and existing studies pinpoint the benefits of stimulating language and expression skills from an early age. Our research is a preliminary evaluation of conversational technology to support this process. In this paper, we describe the design process of a speech-based conversational agent for children, which involved a Wizard-of-Oz empirical study with 20 primary school children aged 9–10 y.o. in order to identify the design guidelines for the automated version of the system. Our agent is called ISI, is integrated into a web application and exploits oral and visual interaction modes. ISI enables children to practice verbal skills related to the description of a person’s physical characteristics. It provides opportunities for them to learn and use words and linguistic constructs. Also, ISI permits to develop their body awareness and self-expression (when describing their self) or the attention to “the other” (when describing someone else). ISI engages users in a speech-based conversational flow composed of two main repeated steps. It talks to the children and stimulates them with questions about a specific part of their body (e.g., “What color is your hair?”). When the users describe the required feature adequately, ISI provides a cheerful real-time visual representation of the answer; otherwise, it provides hints.