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Diagnostic Evaluation of Articulation and Phonology
60
Additional Comments
Diagnostic Screen determines whether to assess articulation, phonology, or both. This also includes the oral motor screen.
The Phonology Assessment helps to examine the child’s use of phonological error patterns and to identify and classify any error patterns in the child’s speech as age-appropriate, delayed or atypical. The assessment consists of 2 tasks: Phonology Single-Word Production and Connected Speech
Articulation Assessment provides a method to examine the child’s ability to produce individual phonemes in words, syllables, and/or in isolation. It also enables you to establish the child’s phoneme
inventory and phoneme stimulability inventory, as well as to determine the child’s performance relative to his or her age peers. The Articulation Assessment consists of two tasks: Articulation Single Word Production and Phoneme Stimulability
The oral motor screen consists of three tasks: Diadochokinetic Production, Isolated Movement and Sequenced Movement.
Authors
Sound Categories/Phonological Processes examined
Barbara Dodd, Zhu Hua, Sharon Crosbie, Alison Holm, and Anne Ozanne
- Articulation: All phonemes elicited at the word level and all consonants except /ð/, /ŋ/, /ʒ/, /w/, /j/, /h/ are elicited in both the initial and final position of syllables. 16/19 vowels are also elicited
- Phonological Processes: gliding, vocalization of liquids, deaffrication, cluster reduction, fronting, weak syllable deletion, stopping, prevocalic voicing, prevocalic devoicing, final consonant deletion
Date of Publication
2006
Targeted Sample
Diagnostic Evaluation of Articulation and Phonology (DEAP)
- 650 sample size based on current U.S. population (2006) with both female and male populations, various racial/ethnic groups, all geographic locations, and various parent education levels
- Age range: 3.0-8.11 years
Scoring
Kelsey Bellew, Abby Collett, Peyton Davis
Approximate time to administer and score
Method of Elicitation
Types of Scores
- 45 minutes to administer
- 20-30 minutes to score, but varies on errors made by child and additional screenings
Standard scores and percentile ranking for Sounds in Words, Phonological Process Use, and Single Words vs. Connected Speech Agreement Criterion
Includes a diagnostic screen, an oral motor screen, and an assessment of both articulation and phonology through the use of picture naming
Interpretation of Scores
The scores allow you to obtain a differential diagnosis of articulation and phonological disorders by looking at stimulability as well as error patterns. Scores also allow discrimination of children with typically developing speech from children who have delays or disorders.