ABSTRACT

Background

Word retrieval deficits are one of the hallmark symptoms of people with aphasia (PWA). Psycholinguistic variables can predict word retrieval accuracy and latency in aphasia, but results to date have been mixed.

Aims

In this study, we investigate the effects of age of acquisition (AOA), familiarity, word frequency, and word length on the naming accuracy and reaction time of Persian-speaking PWA.

Methods & Procedures

This study consists of 25 participants with mild to moderate aphasia who completed a confrontation naming test. Naming accuracy was determined per participant per picture and reaction times were calculated using DMDX and CHECKVOCAL.

Outcomes & Results

The results showed that the four psycholinguistic variables were significantly correlated with naming accuracy and reaction time across the group of PWA. Multiple linear regressions demonstrated that among the four psycholinguistic variables, word familiarity had the strongest effect on reaction time; frequency and familiarity were most predictive of naming accuracy.

Conclusions

The purpose of the present study was to evaluate the influence of four psycholinguistic variables on word retrieval in Persian-speaking PWA using picture naming. The result of this study showed that word familiarity led to more accurate and faster retrieval, while word frequency led to more accurate word retrieval. The effect of psycholinguistic variables in picture naming is relevant to various fields of study, such as the underlying processes of language production, brain lesions, and functional imaging of naming.

中文翻译：

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影响波斯语失语症患者单词检索的心理语言变量

摘要

背景

单词检索缺陷是失语症 (PWA) 患者的标志性症状之一。心理语言学变量可以预测失语症的单词检索准确性和潜伏期，但迄今为止的结果好坏参半。

目标

在这项研究中，我们调查了获得年龄 (AOA)、熟悉度、词频和词长对波斯语 PWA 的命名准确性和反应时间的影响。

方法和程序

这项研究由 25 名轻度至中度失语症参与者组成，他们完成了对抗命名测试。命名准确度由参与者每张图片确定，反应时间使用 DMDX 和 CHECKVOCAL 计算。

结果和结果

结果表明，四个心理语言学变量与 PWA 组的命名准确性和反应时间显着相关。多元线性回归表明，在四个心理语言学变量中，单词熟悉度对反应时间的影响最大；频率和熟悉度最能预测命名的准确性。

结论

本研究的目的是评估四个心理语言学变量对使用图片命名的波斯语 PWA 中单词检索的影响。这项研究的结果表明，单词熟悉度导致更准确和更快的检索，而词频导致更准确的单词检索。图片命名中心理语言变量的影响与各个研究领域相关，例如语言产生的潜在过程、脑损伤和命名的功能成像。