This study, based on a questionnaire written in English, asks participants (with self-reports of low to very high proficiency in two languages) if they are bilingual. That answer serving as the independent variable, we then investigated whether this was linked to sociobiographical factors and to self-reported L2 proficiency. The results of the statistical analyses show participants who self-rated more proficient in their L2 were more likely to consider themselves bilingual. In addition, three sociobiographical factors were linked to self-reports of being bilingual: currently living or having recently lived in the L2 community, and not currently studying the L2.
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