WUG Test

The WUG test is an instrument developed to allow the investigation of how the plural and other inflectional morphemes are acquired in a certain language.  While at first just applicable to English, the test has been modified to fit certain languages.

The WUG test includes a series of questions which use the seven point Likert scale for reference. The tendencies of the usage of languages within an environment are analyzed with this instrument. The WUG test offers instructions on how to administer the test. The WUG test was initially created to study the acquisition of the plural English language, they discovered in their studies that very young children do not even recognized plural language and seem baffled when confronted with a test.


Jean Berko Gleason, 1958.

Administration, Analysis and Reporting

Statistics Solutions consists of a team of professional methodologists and statisticians that can assist the student or professional researcher in administering the survey instrument, collecting the data, conducting the analyses and explaining the results.

For additional information on these services, click here.


Karmiloff, Kyra, and Annette Karmiloff-Smith. (2001) Pathways to Language: From Fetus to Adolescent. Harvard University Press. View

Berko, J. (1958). The Child’s Learning of English Morphology. Word, 14, 150 177.

Ratner, Nan Bernstein, and Lise Menn (2000). In the beginning was the wug: Forty years of language elicitation studies. In Menn, L., and N. B. Ratner, Methods for Studying Language Production. Lawrence Erlbaum Associates. View

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