Diagnostic Evaluation of Articulation and Phonology

  • Barbara Dodd
  • Zhu Hua
  • Sharon Crosbie
  • Alison Holm
  • Anne Ozanne

Diagnostic Evaluation of Articulation and Phonology (DEAP) evaluates articulation and phonological process using a Diagnostic Screen, a diagnostic Articulation Assessment, a diagnostic Phonology Assessment (with a phonological analysis), and an Oral Motor Screen.

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  • Kits

    Starter & complete kits, print & digital

    1 option

    From USD 466.33
  • Test forms reports

    Booklets, record forms, answer sheets, report usages & subscriptions

    3 options

    From USD 38.24
  • Support materials

    Manuals, stimulus books, replacement items & other materials

    2 options

    From USD 154.96
  • All products

    All tests and materials offered for DEAP

    6 options

    From USD 38.24
- of 7 results
  • DEAP Screen and Summary Record Forms Qty 25 (Print)
    0158338464 Qualification Level B

    USD 38.24

    Estimated to ship:3-4 weeks
  • DEAP Articulation and Oral Motor Record Forms Qty 25 (Print)
    0158338472 Qualification Level B

    USD 62.39

    Estimated to ship:3-4 weeks
  • DEAP Phonology Assessment Record Forms Qty 25 (Print)
    0158338480 Qualification Level B

    USD 61.24

    Estimated to ship:3-4 weeks
  • DEAP Kit (Print)
    015833843X Qualification Level B

    Includes Examiner's Manual (Print), Stimulus Manual (Print), 25 Diagnostic Screening and Summary Record Forms (Print), 25 Articulation and Oral Motor Record Forms (Print), 25 Phonology Assessment Record Forms (Print)

    USD 466.33

    Estimated to ship:1 week
  • DEAP Stimulus Manual (Print)
    0158338456 Qualification Level B

    USD 287.50

  • DEAP Examiner's Manual (Print)
    0158338448 Qualification Level B

    USD 154.96

    0154327689 Qualification Level A


    USD 0.00


Publication date:
Age range:
3.0 to 8.11 years
Standard scores and percentile ranks for Sounds in Words, Phonological Process Use, and Single Words vs. Connected Speech Agreement Criterion
Qualification level:
Completion time:
Diagnostic Screen 5 minutes; Articulation assessment 10-15 minutes; Phonology assessment 10-15 minutes; Oral Motor Screen 5 minutes
n= 650 with a sample based on the current U.S. population

Product Details

Use DEAP in conjunction with CELF-5, PLS-5, or another comprehensive language test to obtain a complete understanding of a child's speech and language ability.


  • Obtain a differential diagnosis of articulation disorders and disorders of phonological processes.
  • Discriminate children with typical developing speech from children who have delay/disorder.
  • Examine oral motor function using the Oral Motor Screen.
  • Use screening results to customize the DEAP assessment process and develop appropriate therapy plans based on the child's performance.
  • Gain a more comprehensive understanding of the child's needs through the provided validity studies.


DEAP provides you with more assessment options.

  • Quick articulation and phonology screening.
  • Colorful and engaging pictures.
  • Speech sounds are sampled at least twice to ensure that you have a thorough picture of the child's sound system.
  • The Articulation Assessment samples all English sounds, including vowels.
  • The Phonology Assessment provides information about error patterns and differences between single word and continuous speech production.
  • Oral Motor Screen provides a brief assessment of sequencing and accurate and fluent production of speech.

Sample Reports

The following technical report is available for DEAP.

DEAP’s Assessment Process Flow Chart DEAP-GFTA-KLPA Program Feature Comparison


Author of the DEAP, Barbara Dodd presented a workshop on the DEAP.

Please find here links to the workshop materials:

Other resources