The
Wechsler Individual Achievement Test® –
Third UK Edition (WIAT–IIIUK)
is an individually administered clinical instrument designed to measure
the achievement of children and young people aged 4 years 0 months to
25 years 11 months.
The WIAT–IIIUK, a revision of the Wechsler
Individual Achievement Test-Second UK Edition (WIAT–II UK; Pearson, 2005),
consists of 16 subtests used to evaluate listening, speaking, reading,
writing, and mathematics skills. Administration time varies depending
on the age of the examinee and the number of subtests administered.
The WIAT-IIIUK is manual entry only and has three tabs: Demographics, Raw Scores, and Skills Analysis.
Field Name | Description |
Test Age | The examinee's age when the test was administered |
Current (or Most Recent School or Academic Year ) | The school year of the individual at the time of the assessment administration. The initial default is blank or the previously entered/selected value if a previously saved assessment is being viewed. The school year can be selected from the drop-down list. School years are broken down by country and displayed as follows:
The year entered here will appear in the selected report output. If an examinee's school or academic year is changed after entering assessment data, a warning message will display stating that continuing with the school year change will delete raw scores and scoring guide responses. |
Handedness | Shows the examinee's handedness (preference for the use of the left or right hand). |
Colour Blind | Shows if the examinee is colour blind or not |
Race/Ethnicity | Shows the ancestry/ethnicity of the examinee. |
Is this a Retest? | If checked, this denotes that the examinee has taken this test at least once before. If a WIAT-IIIUK assessment already exists for this examinee, while opening an existing assessment, the previously entered values are displayed. Leave unchecked if this is the first time this examinee is being tested. The software will automatically check the "Is this a Retest?" checkbox if there is a previous assessment of this type for this examinee. |
Comments | Allows the examiner to enter comments for this examinee |
Use the WIAT-IIIUK Administration and Scoring Manual to score subtest items and obtain the total raw score for each subtest. For Sentence Building and Sentence Combining, enter the responses for each item and the total raw score will be calculated automatically. Blank is not a valid value for scoring purposes. A zero (0) should be entered to trigger a calculated score for unfilled fields.
For Oral Reading Fluency, enter the responses for each item and the total raw scores will be calculated automatically. Blank is not a valid value for scoring purposes. A zero (0) or 1 should be entered to trigger a calculated score for uncompleted fields.
Subtest | Administration Age |
Description | |||||||||||||||||||||||||||||||||||||||
Listening Comprehension | Age 4 to Ages 9-17+ |
2 subtest components:
Receptive Vocabulary: Measures a student's listening vocabulary. The student points to the picture that best illustrates the meaning of each word he or she hears. Oral Discourse Comprehension: Measures the ability to make inferences about, and remember details from, oral sentences and discourse. The student listens to sentences and passages and orally responds to comprehension questions. |
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Early Reading Skills | Ages 4 to 8 |
Measures several areas deemed important for developing reading skills: naming letters, letter-sound correspondence (alphabetic principle), phonological awareness, and word reading comprehension. The student names letters of the alphabet, identifies and generates rhyming words, identifies words with the same beginning and ending sounds, blends sounds, matches sounds with letters and letter blends, and matches written words with pictures that illustrate their meaning. | |||||||||||||||||||||||||||||||||||||||
Reading Comprehension | Age 6 to Ages 9-17+ |
Measures untimed reading comprehension of various types of text, including fictional stories, informational text, advertisements, and how-to passages. The student may read passages out loud or silently. After each passage, the student orally responds to literal and inferential comprehension questions that are read out loud by the examiner. Select the value from the combo box indicating which item set the examinee completed.
The X's indicate which item sets are intended for which age. The yellow highlighting indicates the age each item set can be taken. Generally, examinees can go three item sets below the item set intended for their age. Examiners should not administer an item set above the one intended for the examinee's age. |
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Maths Problem Solving | Age 4 to Ages 9-17+ |
Measures untimed maths problem-solving skills in the following domains: basic concepts, everyday applications, geometry, and algebra. The student provides oral and pointing responses. |
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Alphabet Writing Fluency | Age 4 to Age 8 |
Measures a student’s ability to write letters of the alphabet within a 30-second time limit. The student may write letters in any order, in cursive or print, in upper- or lower-case. |
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Sentence Composition | Age 6 to Ages 9-17+ |
2 subtest components: Measures sentence formulation skills and written syntactic maturity. The student combines two or three sentences into one sentence that preserves the meaning of the original sentences. Sentence Building: Measures sentence formulation skills and written syntactic ability. For each item, the student is asked to write one sentence that uses a target word with appropriate context. |
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Word Reading | Age 6 to Ages 9-17+ |
Measures speed and accuracy of decontextualised word recognition. The student reads out loud from a list of words that increase in difficulty. The list of words is read without a time limit. The examiner records the student’s progress after 30 seconds and continues administration until the discontinue rule is met or the last item is administered. |
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Grammar and Mechanics | Age 8 – Ages 9-17+ |
The Raw Score (CIWS) is calculated by subtracting the incorrect value from the correct value. This field may contain a negative value. |
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Essay
Composition
(Theme Development and Text Organisation) |
Age 8 – Ages 9-17+ |
Measures spontaneous, compositional writing skills within a 10-minute time limit. Within the Essay Composition section, raw scores may be entered for each subtest component, or the Information icon to the right of the field can be clicked to open the Scoring Guide. The Information icon for each component is linked to the appropriate location within the Scoring Guide (e.g., if the Paragraphs Information icon is clicked, the Scoring Guide will open to the Paragraphs section). The Reasons Why score should always be higher than the Elaborations score. Score display only fields are calculated by the Raw Scores entered for their component parts. For Correct/Incorrect Word Sequences (CIWS), the value is calculated by subtracting the incorrect value from the correct value. Negative values may display in this field. |
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Pseudoword Decoding | Age 6 to Ages 9-17+ |
Measures the ability to decode nonsense words. The student reads out loud from a list of pseudowords that increase in difficulty. The list of pseudowords is read without a time limit. The examiner records the student’s progress after 30 seconds and continues administration until the discontinue rule is met or the last item is administered. |
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Numeracy | Age 5 to Ages 9-17+ |
Measures untimed, written maths calculation skills in the following domains: basic skills, basic operations with integers, geometry, algebra, and calculus. |
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Oral Expression | Age 4 to Ages 9-17+ |
3 subtest components: Expressive Vocabulary: Measures a student’s speaking vocabulary (and word retrieval ability). The student says the word that best corresponds to a given picture and definition. Oral Word Fluency: Measures a student’s efficiency of word retrieval (how easily he or she can produce words) and flexibility of thought processes. The student names as many things as possible belonging to a given category (i.e., animals, colours) within 60 seconds. Sentence Repetition: Measures oral syntactic knowledge and short-term memory. The student listens to sentences that increase in length and complexity and repeats each sentence verbatim. |
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Oral Reading Fluency | Age 6 to Ages 9-17+ |
Measures speed, accuracy, fluency, and prosody of contextualised oral reading. The student reads passages out loud, and then orally responds to comprehension questions after each passage. Fluency is calculated as the average number of words read correctly per minute. A qualitative scale is completed by the examiner to assess the student’s reading prosody. The X's indicate which item sets are intended for which age (i.e., A-B is intended for children age 6). The yellow highlighting indicates which age can take each item set. Generally, examinees can go 2 item sets below the item set intended for their age. They can never do an item set above the one intended for their age. Passage 1: The Passage 1 section is enabled once a value is selected from the Oral Reading Fluency combo box. The values in Passage 1 are determined by the selected Item Set. If Item Set G-H is selected, the section text will apply to Passage G. Completion Time [also referred to as Oral Reading Time (ORT)] is entered in seconds. Passage 2: The Passage 2 section is enabled once a value is selected from the Oral Reading Fluency combo box. The values in Passage 1 are determined by the selected Item Set. If Item Set G-H is selected, the section text will apply to Passage H. Completion Time [also referred to as Oral Reading Time (ORT)] is entered in seconds. Fluency, Accuracy, and Rate Raw Scores: These fields are calculated and displayed from the Passage (Completion Time, Addition Errors, and Other Errors) groups of the Oral Reading Fluency sections. These fields may contain a negative value. Formula for calculating scores for Fluency and Accuracy:
Rates are calculated in seconds. Minimums and maximums are listed below:
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Spelling | Age 5 to Ages 9-17+ |
Measures written spelling of letter sounds and single words. The student hears each letter sound within the context of a word, and each word within the context of a sentence, and then the student writes the target letter sound or word. |
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Maths Fluency - Addition | Age 6 to Ages 9-17+ |
Measures the speed and accuracy of a student’s maths (addition) calculations. The student solves written addition problems within a 60-second time limit. |
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Maths Fluency-Subtraction | Age 6 to Ages 9-17+ |
Measures the speed and accuracy of a student’s maths (subtraction) calculations. The student solves written subtraction problems within a 60-second time limit. |
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Maths Fluency-Multiplication | Age 6 to Ages 9-17+ |
Measures the speed and accuracy of a student’s maths (multiplication) calculations. The student solves written multiplication problems within a 60-second time limit. |