About the Measure
| Domains | Language |
| Subscales | Screen, articulation, oro-motor, phonological and inconsistency |
| Target Construct | Oral language: Phonology and articulation |
| Description | Detects and differentiates between articulation problems, delayed phonology and consistent versus inconsistent phonological disorder. |
| Test Authors | Dodd, Hua, Crosbie, Holm & Izanne |
| Publisher | Pearson (2002) |
| Psychometry | |
| Implementation |
Implementation details
| Respondent | Child |
| Prior knowledge Required | Psychologists , speech or occupational therapists, mental health professionals and health practitioners with appropriate Graduate and professional qualifications in their field of practice. |
| Scoring | Complex scoring system |
| Time | Diagnostic Screen 5 minutes; Articulation assessment 10-15 minutes; Phonology assessment 10-15 minutes; Oral Motor Screen 5 minutes |
| Age | 3 years to 6 years and 11 months |
Psychometric details
| UK norms | YES |
| Norm / Criterion referenced | Norm referenced |
| Standardisation sample | 684 |
| Reliability | The DEAP’s test-retest reliability scores for the measures were all significantly correlated. Regarding the inter-rater reliability; the scores on the four quantitative measures were all significantly correlated, indicating a good agreement between raters. |
| Criterion validity | Complete coverage of the sound system of English |
| Construct validity | High correlation (r=0.95; p<0.001) between DEAP-PCC and EAT |
| Concurrent validity | High correlation (r=0.95; p<0.001) between DEAP-PCC and EAT |