Executive Function Training for Deaf Children: Impact of a Music Intervention.

The samples were small, so the study cannot show how most deaf children would respond. The children were very different in communication, hearing aids and cognitive ability, which makes consistent group effects hard to interpret. Study 1 tied intervention order to ability group, so lower-ability children had more practice with the tasks before the music post-test; this could overestimate their gains and underestimate gains for higher-ability children. The crossover design may not capture lasting effects, and the paper says improvements were not maintained after intervention ended. Scorers were not blind to which condition a child was in, which could affect scoring. Study 2 only included children who preferred spoken English and had no additional special educational needs, so it does not speak to children using British Sign Language or Sign Supported English. No long-term follow-up or consolidation period was built into the design.

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Do not tell families that ten hours of music training will give lasting executive function gains. The programme improved only some tasks, did not improve cognitive flexibility, and the paper reports the effects were not maintained after the intervention ended.