This study was based on an analysis of some of the qualitative aspects underlying the findings of previous research into the metalinguistic abilities in 160 Italian-speaking, typically developing children aged from 5 to 7 years. This previous research had used six metalinguistic tasks, a nonverbal intelligence test, and two lexical- and grammar-comprehension tests. The outcomes showed a significant improvement in all the dependent variables in the age range considered, measured by a series of ANOVAs, with high correlation between all the variables and a strong homogeneity between the metalinguistic tasks, as revealed by a factor analysis. Using generalized estimating equation (GEE) analysis, the current study analyzed the cognitive levels of response that constituted the total score of each task, at each age (5-6, 6-7, and 7-8 years). Although based on the different distribution of the cognitive levels at each age and in each task, the results of this analysis further confirmed the significance of the developmental changes, and showed different developmental trajectories as a function of the specific task. These results are discussed in light of the different involvement of cognitive processes and literacy skills in the transitional phase between kindergarten and the first two years of primary school.
Keywords: cognitive levels; developmental trajectories; generalized estimating equation analysis; metalinguistic development; metalinguistic tasks; qualitative analysis.