Interpretive Spelling Test (IST)¶
Product or Programme · All products and programmes
Evidence · 2 claims (2 for) · 1 study (1 associational),q3· 1 of 1 report an effect size · 2 claims rest on one study
Description¶
The Interpretive Spelling Test is a spelling-to-dictation assessment developed by Niolaki et al. that measures regular-word, irregular-word, and pseudoword spelling to distinguish lexical and sublexical processes.
Components¶
Claims¶
- Irregular word and pseudoword spelling dissociate after controlling for year group, consistent with distinct lexical and sublexical processes [+M]
- Children spell regular words more accurately than pseudowords and irregular words, and irregular word accuracy falls below pseudoword accuracy until Yr 5 [+M]
Related Products and Programmes¶
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Key Sources¶
- Niolaki, G., Vousden, J., Terzopoulos, A., Shepherd, D.-L., Debney, L., & Masterson, J. (2022). Spelling predictors; investigating the role of phonological ability and rapid naming in a large cross-sectional British study. Learning and Instruction. https://doi.org/10.1016/j.learninstruc.2022.101635
Page metadata
| Field | Value |
|---|---|
type |
product |
id |
interpretive-spelling-test-ist |
title |
Interpretive Spelling Test (IST) |
description |
The Interpretive Spelling Test is a spelling-to-dictation assessment developed by Niolaki et al. |
status |
review |
product_kind |
assessment |
generated |
by process:settle-candidates on 2026-10-22 |
trust |
unverified — no one has confirmed this page's content |
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