Comparing Measuring Methods for Speech Timing During Rapid Automatic Naming Tasks Using Arabic and English Bilingual Adults

Rapid automatized naming (RAN) tasks have been used to assess word retrieval speed and reading speed. However, measures of reading rate may be affected by structural differences between languages. This study was designed to measure talking speed differences in the utterances of a group of speakers whose first language (L1) was Arabic and second language (L2) was English. Three hypotheses were tested: the language structure differences would result in L2 productions with slower utterance rates; the L2 speaking rate would be characterized by greater utterance interruptions than the L1; and the articulation rate would more accurately indicate the naming speeds of the participants. Twenty Arabic- and English-speaking young adults completed RAN tasks for number and object naming in both languages. Utterance rate, speaking rate, and articulation rate were measured. The participants exhibited similar utterance durations in the two languages and utterance rate in words per second, but faster utterance rates in Arabic when measuring the utterance rate in syllables per second. They exhibited more pauses and longer pauses during the English productions, particularly for the object naming. Finally, the speaking rate in syllables per second and articulation rate in syllables per second were equivalent as utterance rates.