Word reading is a fundamental skill in reading and one of the building blocks of reading comprehension. Theories have posited that for second language (L2) learners, word reading skills are related if the children have sufficient experience in the L2 and are literate in the first language (L1). The L1 and L2 reading, phonological awareness skills, and morphological awareness skills of Syrian refugee children who speak Arabic and English were measured. These children were recent immigrants with limited L2 skills and varying levels of L1 education that was often not commensurate with their ages. Within- and across-language skills were examined in 96 children, ages 6 to 13 years. Results showed that phonological awareness and morphological awareness were strong within-language variables related to reading. Additionally, Arabic phonological awareness and morphological processing were strongly related to English word reading. Commonality analyses for variables within constructs (e.g., phonological awareness, morphological awareness) but across languages (Arabic and English) in relation to English word reading showed that in addition to unique variance contributed by the variables, there was a high degree of overlapping variance.

Although age of acquisition (AoA) is frequently used when examining the endpoint of second language (L2) learning, it is rarely used to examine the initial phases of L2 acquisition. The present study provided a unique look at the role of AoA in early language and literacy acquisition in the L2 by a priori selecting two groups of Arabic-English speakers based on their ages, 6–8-year-olds (N = 43) and 9–13-year-olds (N = 53). These Syrian refugees were matched on English experience, having immigrated to Canada and having learned English for two years or less. Raw scores on language and literacy measures were compared across groups. The older group had higher scores on all first language (L1) variables. The groups did not differ on most L2 variables except for English word reading. Additionally, L1 and L2 variables were examined in relation to English word and pseudoword reading with different patterns of relations found for the two groups. For the younger group, phonological awareness and vocabulary were related to reading, while for the older group phonological awareness and morphological awareness were key predictors. These finding points to the unique relations among age, age of acquisition, L1 skills, and L2 language and literacy skills.