Impact of Hearing Loss Type on Linguistic Development in Children: A Cross-Sectional Study

Background/Objectives: Hearing loss in childhood is associated with significant challenges in linguistic and cognitive development, particularly affecting language skills such as syntax, semantics, and pragmatics, which are essential for effective communication and social integration. This study aims to analyze how different types and degrees of hearing loss impact linguistic development in children, and to identify clinical factors—such as age at diagnosis and years of language intervention—that may predict language performance. Methods: This study included a sample of 140 children aged 6 to 12, categorized into seven groups based on their hearing condition: unilateral and bilateral conductive, unilateral and bilateral sensorineural, unilateral and bilateral mixed hearing loss, and a control group with no hearing loss. Linguistic development was assessed using the Clinical Evaluation of Language Fundamentals - 5 (CELF-5), a validated tool for diagnosing language disorders. Statistical analyses, including MANOVA and multiple regression, were conducted to evaluate differences in linguistic skills across groups and to determine the predictive value of clinical variables on total language performance. Results: The analysis revealed statistically significant differences across groups in all assessed linguistic domains (p < 0.001), with children with severe or bilateral hearing loss exhibiting notably lower scores compared to normohearing peers. The multiple regression analysis indicated that type of hearing loss was the strongest predictor of total linguistic performance (β = -0.674), followed by age at diagnosis (β = -0.285) and age of hearing device adaptation (β = -0.220). Years of language intervention also contributed significantly (β = 0.198) but to a lesser extent. Conclusions: The study highlights the critical impact of early and comprehensive auditory and language intervention on linguistic outcomes for children with hearing impairments. Early diagnosis and timely adaptation of hearing aids or cochlear implants are essential in mitigating language deficits, particularly in areas like syntax and pragmatic skills. These findings support the need for specialized, long-term interventions tailored to the severity and type of hearing loss to improve language development in this population.

研究背景与目的：儿童听力损失会对语言与认知发展造成显著障碍，尤其会损害句法、语义及语用等语言技能——这些技能是有效沟通与社会融合的核心要素。本研究旨在分析不同类型与程度的听力损失对儿童语言发展的影响，并明确可预测语言表现的临床因素，例如确诊年龄与语言干预时长。研究方法：本研究纳入140名6至12岁儿童作为研究对象，依据听力状况分为7组：单侧传导性、双侧传导性、单侧感音神经性、双侧感音神经性、单侧混合性及双侧混合性听力损失组，以及无听力损失的对照组。采用语言基础临床评估第五版（Clinical Evaluation of Language Fundamentals - 5, CELF-5）——一款经过验证的语言障碍诊断工具——评估儿童的语言发展水平。通过多元方差分析（MANOVA）与多元回归分析等统计方法，评估各组间语言技能的差异，并明确临床变量对整体语言表现的预测价值。研究结果：分析显示，所有评估的语言维度在各组间均存在统计学显著性差异（p < 0.001）；重度或双侧听力损失儿童的得分显著低于听力正常同龄儿童。多元回归分析结果显示，听力损失类型是整体语言表现最强的预测因子（β = -0.674），其次为确诊年龄（β = -0.285）与助听设备适配年龄（β = -0.220）；语言干预时长同样具有显著贡献（β = 0.198），但影响程度相对较弱。研究结论：本研究强调了早期且全面的听觉与语言干预对听力障碍儿童语言结局的关键影响。早期确诊与助听器或人工耳蜗的及时适配，对缓解语言缺陷尤为重要，尤其是在句法与语用技能领域。本研究结果表明，需针对听力损失的类型与程度制定个性化的长期专项干预方案，以改善该群体的语言发展水平。