We tested the effects of diglossia and orthography on reading in Arabic, manipulating reading in Spoken Arabic (SA), using Arabizi, in which it is written using Latin letters on computers/phones, and the two forms of the conventional written form Modern Standard Arabic (MSA): vowelled (shallow) and unvowelled (deep). 77 skilled readers in 8th grade performed oral reading of single words and narrative and expository texts, and silent reading comprehension of both genres of text. Oral reading and comprehension revealed different patterns. Single words and texts were read faster and more accurately in unvoweled MSA, slowest and least accurately in vowelled MSA, and in-between in Arabizi. Comprehension was highest for vowelled MSA. Narrative texts were better than expository texts in Arabizi with the opposite pattern in MSA. The results suggest that frequency of type of texts and the way in which phonology is encoded affect skilled reading

我们使用阿拉伯语测试了diglossia和正字法对阿拉伯语阅读的影响，使用阿拉伯语（SA）操纵阅读，阿拉伯语是在计算机/电话上使用拉丁字母书写的，还有两种形式的常规书面形式：现代标准阿拉伯语(MSA)：元音（浅）和无元音（深）。8 年级的 77 名熟练读者进行了单个单词和叙述性和说明性文本的口头阅读，以及两种类型文本的默读理解。口头阅读和理解揭示了不同的模式。在非元音 MSA 中，单个单词和文本的阅读速度更快、更准确，元音 MSA 中读取速度最慢且准确度最低，而在阿拉比齐中则介于两者之间。元音 MSA 的理解力最高。叙述性文本优于阿拉比齐语中的说明性文本，而 MSA 中的模式相反。