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Adult Cognition, Language and Neuropsychology -
Language

Verb and Sentence Test (VAST)
Roelien Bastiaanse, Susan Edwards and Judith Rispens, 2002

Overview: 
Investigate disorders affecting the production
and comprehension of verbs and sentences

Age Range:
18 to 80 years

Administration:
30 minutes for 2 to 4 subtests, 
2 to 3 hours for all subtests

The Verb and Sentence Test contains ten subtests for assessing aphasia. The battery focuses on verbs and sentences in a highly systematic and clinically oriented way. The test has been designed to look at verb and sentence processing: areas where difficulties arise but where there are few clinical tools. The test evolved from psycholinguistic and linguistic research and, uniquely, all subtests are linked with remediation programmes. The battery pinpoints the underlying impairment at the sentence level in aphasia. It is scientifically justified as only variables that we know are vulnerable in aphasia are tested. Furthermore, the vast is valuable in a clinical environment as only variables that can be successfully treated are included.

Nature of the test 
The vast is designed for in-depth analysis when the examiner wants to find out more about the nature of, for example, sentence comprehension disorder. For this, subtests of comprehension of verbs, grammaticality judgment, and sentence comprehension are included. At the production level, the examiner might want to find out how well someone with aphasia can produce verbs in several contexts. Subtests are included for the production of verbs as single words and production of (both finite and non-finite) verbs in sentences, as well as a sentence construction subtest. To evaluate the subjectís abilities to form different sentence types, sentence anagrams are included for active and passive sentences and for questions. 

Administration 
The pack contains picture books, scoring sheets, word cards and a template for the sentence anagram tasks, and an extensive manual in which the theoretical background, task description, scoring methods, and statistics from standardization are given. The number of subtests presented to the subject depends on the specific question of the examiner. Clinical assessment may be restricted to two to four subtests, which will take about 30 minutes, with the entire battery taking between two and three hours.


Available Products

Materials

Complete kit: Includes manual, pack of 25 scoring sheets, test materials book, 3 stimulus books, 9 words cards, 3 sets of envelopes
Additional copies of materials:
Scoring sheets, pack of 50