Early Literacy Research Library (ELRL) - Metric

Expressive One Word Picture Vocabulary Test (EOWPVT)


Access: FREE/Open Access

evaluation focus

English Speaking Expressive Vocabulary

applicable ages

24+ months; 2-18+ years

available language(s)



Must be purchased


The Expressive One Word Picture Vocabulary Test (EOWPVT) is instrument that can be used to measure English-speaking expressive vocabulary in a wide range of ages from early childhood through late adulthood. The assesses the test-taker’s ability to name commonly experienced objects, actions, and/or concepts. These items are presented as a series of 190 full-color pictures. This measure is often used in conjunction with the Receptive One Word Picture Vocabulary Test (ROWPVT, tagged “ROW”).


Scores Available:

    • Percentiles
    • standard scores
    • age equivalents

Administration Format: Test Plates bound in a Spiral Booklet with a Fold-out Easel


Reliability (Michalec 2011):

    • Internal Consistency: manual report acceptable coefficient alphas range from 0.93 – 0.98, with a median of 0.96. Split half coefficients, corrected for full-length, have a median of 0.98.
    • Test-Retest: 226 testers re-tested, coefficient of 0.90.
    • Interrater: strong consistency across examiners demonstrated by three different reliability tests.


Validity (Michalec 2011):

    • Content Validity: demonstrated for illustrated items
    • Criterion-Related Validity: demonstrated between the EOWPVT and other vocabulary tests
    • Construct Validity: tested across a variety of sources with correlations ranging from 0.64 – 0.89.

Available for Purchase: https://ganderpublishing.com/products/expressive-one-word-picture-vocabulary-test-fourth-edition-eowpvt-5?variant=23480835407930


Source: https://ganderpublishing.com/products/expressive-one-word-picture-vocabulary-test-fourth-edition-eowpvt-5?variant=23480835407930


supporting literature

Michalec, D., Henninger, N. (2011) Expressive One-Word Picture Vocabulary Test. In: Kreutzer, J. S., DeLuca, J., Caplan, B. (eds) Encyclopedia of Clinical Neuropsychology. Springer, 1000-1002.
PDF: EOW – 1 – Michalec 2011
Link: https://link.springer.com/referenceworkentry/10.1007/978-0-387-79948-3_1544

Furlong, M.J., Teuber, J.F. (1984) Validity of the Expressive One-Word Picture Vocabulary Test for Learning-Disabled Children. Journal of Psychoeducational Assessment, 2(1), 1-90.
PDF: EOW – 2 – Furlong 1984
Link: https://journals.sagepub.com/doi/abs/10.1177/073428298400200104?journalCode=jpaa#:~:text=The%20results%20indicated%20that%20the,than%20the%20PPVT%2DR%20scores.

de Silva, V.R., Lindau, D.A., Giacheti, C.M. (2021) Cultural Adaptation of Expressive One-Word Picture Vocabulary Test, 4th Edition (EOWPVT-4), for Brazilian Portuguese. CoDAS, 33(1), 1-5.
PDF: EOW – 3 – de Silva 2021
Link: https://www.scielo.br/j/codas/a/bM6M5Sb443gwhMfbFFLN3vv/?lang=en