With development, list recall includes more chunks, not just larger ones.

@article{Cowan2010WithDL,
  title={With development, list recall includes more chunks, not just larger ones.},
  author={Nelson Cowan and Anna Hismjatullina and Angela M. AuBuchon and J. Scott Saults and Neil J Horton and Kathy Leadbitter and John N. Towse},
  journal={Developmental psychology},
  year={2010},
  volume={46 5},
  pages={1119-31}
}
The nature of the childhood development of immediate recall has been difficult to determine. There could be a developmental increase in either the number of chunks held in working memory or the use of grouping to make the most of a constant capacity. In 3 experiments with children in the early elementary school years and adults, we show that improvements in the immediate recall of word and picture lists come partly from increases in the number of chunks of items retained in memory. This finding… CONTINUE READING