Non-word repetition has, not without controversy, been considered a reliabl
e index of phonological memory in children with language impairment (LI). R
ecent studies do, however, emphasize the strong link between non-word repet
ition skills and phonological output in pre-school children with LI. The pu
rpose of the present study was to explore the relationship between non-word
repetition and different aspects of language comprehension (comprehension
of words, sentences and fables) in 27 children with LI. The results showed
that non-word repetition significantly correlated with all measures of lang
uage comprehension in the children with LI. Partial correlations revealed a
weaker relationship between vocabulary comprehension, comprehension of fab
les and non-word repetition than between non-word repetition and comprehens
ion of grammar. A possible explanation for the findings may be that the tes
ts assessing comprehension of grammar strained language processing and stor
age more than the other tests. It is concluded that non-word repetition can
not be considered to be a single, reliable index of phonological memory in
pre-school children with LI. Non-word repetition incorporates a range of pr
ocesses necessary for language comprehension and production, and thus mirro
rs the general language status of the child.