The WIAT-III psychometric assessment measures the overall academic achievement for students from 4 years of age to 50 years & 11 months of age. It encompasses several academic skills such as reading, writing and oral language, which are measure by having the testee engage in a variety of tasks, divided into the reading scale, mathematics scale and written language scale.

The test takes about 30 to 90 minutes to complete, and is used to measure the strengths and weaknesses of the testee.

The WIAT-III consists of the following sub-tests and observations:

  • Early reading skills – measures several skills deemed important for developing reading skills.
  • Word reading – designed to measure the speed and accuracy of decoding skills.
  • Pseudo-word Decoding – measures speed and accuracy of decoding skills.
  • Reading Comprehension – measures literal and inferential reading comprehension skills, using a variety of passage and question types that resemble those used in a school setting.
  • Oral reading fluency – measures oral reading fluency of expository and narrative passages.
  • Total reading – includes word reading, pseudoword decoding, reading comprehension, and oral reading fluency.
  • Basic reading -– includes word reading and pseudoword decoding.
  • Reading comprehension and fluency – includes reading comprehension and oral reading fluency.
  • Numerical operations – measures written mathematics calculation skills under untimed conditions.
  • Math problem solving – measures the ability to problem solve mathematically using both verbal and visual prompts.
  • Math fluency – these subtests are designed to measure written mathematics calculation fluency, accuracy and speed.
  • Alphabet writing fluency – measures ability to wite alphabet letters within a 30 second time limit.
  • Spelling – measure the ability to spell dictated letters, blends, and words.
  • Sentence composition – includes sentence combing and sentence building components which measure sentence formaulation skills, including the use of morphology, grammar, syntax, semantics and mechanics.
  • Essay composition – measures spontaneous written expression in response to a prompt under timed conditions.
  • Writing Expression – includes alphabet writing fluency, spelling, sentence composition, and essay composition.
  • Listening comprehension – contains receptive vocabulary and oral discourse comprehension components and measure listening comprehension at the level of the word, sentence and discourse.
  • Oral expression – contains expressive vocabulary, oral word fluency, and sentence repetition components and is designed to measure skills and competencies that are important for effective speaking vocabulary, word retrieval, flexibility of thought process and oral syntactic knowledge and short-term memory.
  • Oral language – includes listening comprehension and oral expression.

For more information about the WIAT-III, or to book an assessment, please contact us.

Total fee for the assessment & report