In order to get a developmental picture of vocabulary growth, we first tested
whether performance on the different measures/tasks correlated with age and
with raw score on the Raven’s Progressive Matrices when age was partialed
out, as NVIQ has been shown to be weakly related to vocabulary size in spoken
languages (Goldberg, Paradis, & Crago, 2008). We then investigated whether
performance on each pair of vocabulary tasks was correlated once age and the
Raven’s Progressive Matrices Raw Score had been partialed out. Scores for the
vocabulary tasks and the Raven’s Progressive Matrices are set out in Table 5.