Design: Randomised confirmatory efficacy trial
Population: 184 adult outpatients with schizophrenia, stratified by auditory processing
Primary outcome: Cognitive and functional outcomes after treatment and at 3 months
Effect: No significant difference between remediation with and without auditory training

Early auditory processing deficits are common in schizophrenia and track with wider cognitive problems. This randomised trial tested whether tailoring cognitive remediation to them helps. 184 outpatients were classified as having intact or impaired auditory processing, then randomised to cognitive remediation with or without auditory training.

Cognitive gains were moderate across both arms. Adding auditory training did not change auditory, cognitive or functional outcomes in either group, at the end of treatment or three months later. Auditory processing improved modestly in those who started impaired, whatever arm they were in.

The useful message is the one that survives: cognitive remediation helps, and patients with auditory deficits gain from it too. Screening for those deficits to choose a programme is not supported by this trial.

Where cognitive remediation is available, refer on the basis of functional need rather than a specific deficit profile.

Cognitive remediation produced moderate cognitive gains whether or not it included auditory training.
Patients with auditory processing deficits improved as much without targeted training.
Screening for auditory deficits to choose a programme is not supported by this trial.
Consider referral for cognitive remediation in patients whose cognition limits daily function.
Ask about work, study and self-care goals when deciding who to refer.

Why it matters

It removes a screening step that would have made cognitive remediation harder to deliver without improving it.

The statistics, in plain English

A moderate effect size means a noticeable but not dramatic average improvement. The key result is a null comparison: the targeted version was no better, so the added complexity did not earn its place.