Adding a fourth rater to three had little impact in pre-linguistic outcome classification.

In conclusion, adding a forth rater in assessment of pre-linguistic utterances in 12-month-old infants with naturalistic assessment in real time does not affect outcome classifications considerably. Thus, using three raters, as opposed to four, is recommended.
PMID: 32372661 [PubMed - as supplied by publisher]

Source: Clinical Linguistics and Phonetics - May 5, 2020 Category: Speech-Language Pathology Authors: Persson C, Conroy EJ, Gamble C, Rosala-Hallas A, Shaw W, Willadsen E Tags: Clin Linguist Phon Source Type: research