About Us - Screening Test for Aphasia and Dysarthria (STAD)

Characteristics of STAD, Screening Test for Aphasia and Dysarthria

  • STAD comprises of 3 sections, and a total of 29 items
  • Item:  0=wrong, 1=correct
  • Standardized in Japan in 2018
  • It takes only 10 minutes (avg. 9’ 48”)
  • Complete, detailed glossary is available

The screening test for aphasia and dysarthria (STAD) is a brief test consisting of 29 questions that help speech and language pathologists (SLPs) evaluate the overall communicative ability, enabling them to identify the need for additional assessment. STAD is a widely adaptable test available for severe communicative disorders. It uses simple and multiple communicative domains, which are important components that are not measured by other communicative screeners.


Dr. Kentaro Araki

completed his Master’s and PhD at Chiba University after graduating from Kitazato University where he obtained his degree in speech pathology. As a result of his experience struggling to screen speech disorders, he started working on creating the STAD. In 2009, his STAD study won the 2nd Language and Hearing Research Excellent Paper Award, and the Excellent Presentation Award from the 21st Brain Functions and Rehabilitation Study Group in 2014. He continues to work on this project.


Researchgate (World researcher information) 

ORCID(Open Researcher and Contributor ID)

Researchmap (Japanese researcher information)



This web site is supported by the JSPS Kakenhi, grant no. 16H00709, 19K24192