Table_1_A web-based application for eliciting narrative discourse from Greek-speaking people with and without language impairments.DOCX

In this paper we present a web-based data collection method designed to elicit narrative discourse from adults with and without language impairments, both in an in-person set up and remotely. We describe the design, methodological considerations and technical requirements regarding the application development, the elicitation tasks, materials and guidelines, as well as the implementation of the assessment procedure. To investigate the efficacy of remote elicitation of narrative discourse with the use of the technology-enhanced method presented here, a pilot study was conducted, aiming to compare narratives elicited remotely to narratives collected in an in-person elicitation mode from ten unimpaired adults, using a within-participants research design. In the remote elicitation setting, each participant performed the tasks of a narrative elicitation protocol via the web application in their own environment, with the assistance of an investigator in the context of a virtual meeting (video conferencing). In the in-person elicitation setting, the participant was in the same environment with the investigator, who administered the tasks using the web application. Data were manually transcribed, and transcripts were processed with Natural Language Processing (NLP) tools. Linguistic features representing key measures of spoken narrative discourse were automatically calculated: linguistic productivity, content richness, fluency, syntactic complexity at clausal and inter-clausal level, lexical diversity, and verbal output. The results show that spoken narratives produced by the same individuals in the two different experimental settings do not present significant differences regarding the linguistic variables analyzed, in sixty six out of seventy statistical tests. These results indicate that the presented web-based application is a feasible method for the remote collection of spoken narrative discourse from adults without language impairments in the context of online assessment.

本研究提出一种基于网页（web-based）的数据采集方法，旨在从存在或不存在语言障碍（language impairments）的成年人群体中获取叙事话语（narrative discourse），可覆盖线下与远程两种实验场景。本文详细阐述了该应用开发、叙事诱发任务、实验材料与指导原则相关的设计思路、方法学考量及技术要求，同时介绍了评估流程的具体实现方案。为验证本文提出的技术增强型叙事话语远程诱发方法的有效性，我们开展了一项预实验（pilot study）：采用被试内实验设计，招募10名无语言障碍的成年被试，分别通过远程与线下两种模式采集叙事话语并开展对比分析。在远程诱发场景中，每位被试通过该网页应用，在自身所处环境中完成叙事诱发范式的全部任务，研究人员通过视频会议（video conferencing）提供协助；而在线下场景中，被试与研究人员共处同一环境，由研究人员通过该网页应用完成任务施测。所有数据均经人工转录，转录文本随后使用自然语言处理（Natural Language Processing, NLP）工具进行处理。我们自动计算了表征口语叙事话语核心指标的语言学特征：语言产出量、内容丰富度、话语流畅性、小句内部与小句间句法复杂度、词汇多样性以及言语输出总量。分析结果显示，同一批被试在两种实验场景下产出的口语叙事，在70项统计检验中有66项未呈现显著差异。上述结果表明，本文提出的基于网页的应用程序，可作为在线评估场景下，从无语言障碍成年人群体中远程采集口语叙事话语的可行方案。