Abstract
The longitudinal intervention study reported here is the first to investigate the efficiency of a computer learning software specifically designed for dyslexic Swiss German learners of Standard German as a second language (L2) and English as a third language (L3). 40 subjects (20 of them dyslexics and 20 of them non-dyslexics; 10 students from each group participated in interventions and the other 10 from each group served as control groups) were assessed with a battery of verbal and written pre- and post-tests involving phonological/orthographic and semantic measures of their L2 and L3 before and after 3 months of daily intervention with the software. The results show that computer-based training in the L3 is potentially an important tool in intervention for dyslexic students, as it has a positive effect on the components of L3 as well as L2 learning. As a consequence of their progress in acquiring the relationships between L3 graphemes and phonemes, the experimental groups – but not the control groups – made significant gains on L2 naming accuracy and speed, L2 and L3 word reading, L2 and L3 phonological awareness, and L2 and L3 receptive and productive vocabulary and comprehension tasks.