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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Early Hum Dev. 2017 May 23;111:30–35. doi: 10.1016/j.earlhumdev.2017.05.006

Table 1.

Psychometric properties and way of scoring of the language tests

Language test Validity Reliability Items tested Scored as
AWST-R(16) Established alpha 0.88 75 Number of correct responses
Noun-Verb test (17) Established ”good” Number of correct responses
      -      Nouns 36
      -      Verbs 36
      -      Composite 72
PPVT-III (18) Established alpha 0.92-0.98 Number of items correctly responded to; number of sets filled in with at least 5 out of 12 items correct, according to the test-manual
      -      Items 204
      -      Sets 17
HAWIK (subscale Wortschatz) (19) Established ”good” 36 Number of correct responses
TROG (20) Established alpha 0.86 Number of correct responses
      -      Items 84
      -      Blocks 21

Key: AWST-R, Aktiver Wortschatztest - Revision; PPVT-III, Peabody Picture Vocabulary Test, third edition; HAWIK, Hamburg-Wechsler-Intelligenztest für Kinder, fourth edition; TROG, Test for Reception of Grammar – Deutsch