Picture Vocabulary Size Test
Measure the receptive vocabulary size of non-native and preliterate-native speakers by using images and text.
The Picture Vocabulary Size Test (PVST) tests the 6,000 most frequently used English words and provides an estimate of receptive vocabulary size. Download PVST for free on Laurence Anthony's website.
PVST is intended for young native speakers of English (up to 8 years old) and young EFL and ESL learners of English. It can also be used with preliterate learners.
The help file that downloads as part of the PVST software provides detailed information about the test.