Phoneme Deletion

This test measures phoneme awareness (that is, speech sound manipulation) skills, in particular analysis of nonwords differing in levels of phonological complexity. Targeted phonemes are initial consonants (onsets) and final consonants (codas).

Age range

Suitable for children in Year 1 who show mastery (> 80%) on the Phoneme Isolation test, and for children in the age range of 6 to 12 years (i.e., UK Years 2 to 6).

Scoring: accuracy, speed

Accuracy and speed are measured.  Accuracy is the more meaningful measure on any part of the test (Onsets, Codas, Total) where children have not yet reached mastery (> 80%) in accuracy.  The speed measure is most meaningful for children who have reached mastery level in accuracy.


Grade norms are currently available for Year 1 (accuracy) and Year 2 (accuracy and speed).

Materials for Administration

Recording device, Stopwatch, Phoneme Deletion Task Instructions Sheet, Phoneme Deletion Score Sheet

Please ensure you are using the most up-to-date test version:

Test Version: 2

Norm Version: 2

Updated: 23.02.2021


This task is also available as an interactive online task using the Concerto platform. If you would like to use the online versions of the tasks please use the Contact Us form (link below) and request access. Please allow 15 working days to process your request. Once we have processed your request you will be sent a separate Concerto username and password. This is different from your username and password used to access the MABEL website. Please keep this username and password safe and please do not share them.

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