Child looking at pictures in children's book
Child looking at pictures in children's book

The development of word production in young children: Monitoring of self and others

Perception and Production of Lexical items (PerPLex)
15 February 2023 until 15 February 2028
Project member(s)
F.M.H.G. Vissers (Fleur) , Delbar, N.A. (Natasja) (University of Leiden) , Dr I.L. Lammertink (Imme) , Prof. Levelt, C.C. (Claartje) (University of Leiden) , Prof. J.P.M. Fikkert (Paula)
Project type

PerPLex is a project about the speech perception (how a child perceives speech) and speech production of lexical items (words) of toddlers.

Young children often do not yet produce all words completely correct. For example, children can say ‘tuk’ when pointing to a truck. Why do some children say ‘tuk’ and not ‘truck’? Do they do this because they cannot articulate the word ‘truck’ or is it because they did not (yet) perceive or store the word correctly? And how do these children eventually learn to say ‘truck’ instead of ‘tuk’? These questions are the focus of the research project PerPLex.

The main aspect studied in PerPLex is children’s monitoring. Monitoring is when children compare their own pronunciation of a word to their expectation of how a word would be pronounced by someone else or by themselves. For example, if someone else says ‘truck’, a child may compare it with their own storage ‘tuk’ (in case the child did not (yet) store the word correctly). When the child notices the difference between these it may update their expectation from ‘tuk’ to ‘truck’. 

Logo PerPLex - Perception and Production of Lexical items

During the project children do multiple tasks, for example playing a game or watching a video. With these tasks we measure children’s speech perception and production. Unique to this project is that the analyses of the tasks will be adjusted to what the specific child comprehends and produces. This will also lead to a better understanding of the link between children’s speech perception and production. 



Leiden University

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