In summary, we have demonstrated a large, significant
treatment effect in a school-based grammar treatment
programme for specific grammatical targets in 5-yearold
children with SLI. This effect was present both in
group and single-subject analyses. Small group treatment
using direct teaching,modelling, opportunities for
production and feedback targeted specifically to a child’s
needs was effective in improving grammar targets. The
biggest impediment to treatment success was articulation
impairment which interfered with the realization
of grammatical targets.