Abstract
The number of bilingual individuals in Japan is increasing due to globalization. More and more researchers show interest toward language disorders among bilingual individuals. This study investigated whether any trends exist in the severity of the disorder or recovery patterns based on the language pair when a bilingual individual had aphasia. The literature review included bilingual patients who spoke Japanese and another language. I sorted 23 papers into specific categories: general information, language disorder symptoms, and severity of the disorder. Upon analyzing the severity of the disorder and recovery patterns, I discovered some tendencies: 1）patients with the language pair of Korean and Japanese often had similar severity of disorder and recovery patterns in both languages or“ parallel recovery”; 2）patients with the Japanese and English language pair often had non-parallel recovery. Based on these findings, bilingual patients with aphasia possibly have different severity of disorder and recovery patterns based on their language pair.
