Visual Recognition of Graphic Variants of Amharic Letters: Psycholinguistic Experiments

Feda Negesse, D. Ado
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Abstract

One of the problems of Amharic orthography is a lack of consistency where the four Amharic sounds (/h/, /ʔ/, /s/ and /s’/) are mapped onto more than a single letter. The objective of these psychological experiments was to investigate the visual recognition of the graphic variants of the letters, both in isolation and within words. The experiments involved computation of the frequency counts of the letters in the Ten Ten Corpus for Amharic and the result revealed that there is a clear pattern of preference for the letters: the letters representing /h/ had the pattern , the letters representing /ʔ/ had the pattern , the letters representing /s/ had the pattern , and the letters representing /s’/ had the pattern in descending order of frequency. Similarly, the experiments indicated that frequency counts are significantly related to visual recognition of a letter, with the more frequent letters recognized faster with fewer errors. It was also observed that the target letters were recognized with a shorter reaction time when they were paired with themselves, but the recognition time was longer when they occurred with their graphic variants. Moreover, significantly higher percentage of errors were made when the target letters were matched with their graphic variants or their distractors in the alphabet recognition task. Similar patterns were also observed in the lexical decision task when the target letters were presented in words and pseudo-words. More rigorous psycholinguistic experiments, which will involve a large number of participants, are recommended to validate the results of the current experiments.
阿姆哈拉语字母图形变体的视觉识别:心理语言学实验
阿姆哈拉语正字法的一个问题是缺乏一致性,四个阿姆哈拉语音(/h/, /h/, /s/和/s ' /)被映射到不止一个字母上。这些心理实验的目的是调查字母的图形变体的视觉识别,无论是孤立的还是在单词中。实验计算了阿姆哈拉语十十语料库中字母的出现频率,结果表明,人们对字母的偏好有明显的规律:代表/h/的字母有这种规律,代表/h/的字母有这种规律,代表/s/的字母有这种规律,代表/s ' /的字母有这种规律,代表/s ' /的字母有这种规律,代表/s ' /的字母有这种规律。同样,实验表明,频率计数与字母的视觉识别显著相关,频率越高的字母识别速度越快,错误越少。我们还观察到,当目标字母与自己配对时,识别时间较短,但当它们与图形变体一起出现时,识别时间较长。此外,在字母识别任务中,当目标字母与其图形变体或其干扰物相匹配时,错误率明显更高。当目标字母以单词和假词呈现时,在词汇决策任务中也观察到类似的模式。建议进行更严格的心理语言学实验,这将涉及大量的参与者,以验证当前实验的结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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