Table 1. Characteristics of the Bayley-III and the Short Tests.
| Age Range Test (mths) | Age Range Study Children (mths) | Number of itemsa | Time to administer (min)b | Cost (USD)c | Cronbachalpha | Test-retest ICC | |
|---|---|---|---|---|---|---|---|
| Criterion Measure | |||||||
| Bayley-III | 0–42 | 6–42 | (n = 36) | $1025 kit + $4.89 pc | (n = 1311) | (n = 20) | |
| Cognition | 21 | 83.2 (18.8) | 0.97 | 0.96 | |||
| Receptive Language | 18 | 0.96 | 0.96 | ||||
| Expressive Language | 16 | 0.96 | 0.98 | ||||
| Fine Motor | 18 | 0.96 | 0.98 | ||||
| Gross Motor | 16 | 0.97 | 0.98 | ||||
| Multi-dimensional Tests for Validation | |||||||
| ASQ-3 | 1–66 | 6–42 | (n = 32) | $275 kit | (n = 664) | (n = 12) | |
| Problem Solving | 6–9 (6.5) | 19.7 (8.2) | 0.60 | 0.80 | |||
| Communication | 6–9 (6.5) | 0.68 | 0.92 | ||||
| Fine Motor | 6–9 (6.4) | 0.57 | 0.37 | ||||
| Gross Motor | 6–9 (6.6) | 0.70 | 0.90 | ||||
| Personal-Social | 6–9 (6.4) | 0.55 | 0.73 | ||||
| Denver-II | 0–71 | 6–42 | (n = 32) | $200 kit + $0.45 pc | (n = 658) | (n = 12) | |
| Language | 10 | 27 (10.5) | 0.93 | 0.93 | |||
| Fine Motor-Adaptive | 9 | 0.91 | 0.83 | ||||
| Gross Motor | 9 | 0.90 | 0.53 | ||||
| Personal-Social | 9 | 0.91 | 0.49 | ||||
| BDI-2 (Battelle) | 0–83 | 6–42 | (n = 30) | $405.70 kit + $3.08 pc | (n = 635) | (n = 11) | |
| Cognitive | 9 | 59 (13.0) | 0.79 | 0.92 | |||
| Communication | 9 | 0.89 | 0.94 | ||||
| Motor | 9 | 0.88 | 0.98 | ||||
| Personal-Social | 10 | 0.84 | 0.71 | ||||
| Adaptive Skills | 9 | 0.84 | 0.90 | ||||
| Single-domain Tests for Validation | |||||||
| SFI (MacArthur) | 8–18 | 8–18 | (n = 8) | $90 kit + $1 pc | (n = 192) | (n = 12) | |
| Receptive Language | 104 | 8.6 (1.9) | 0.97 | 0.99 | |||
| Expressive Language | 104 | 0.92 | |||||
| SFII (MacArthur) | 19–30 | 19–30 | (n = 10) | (n = 226) | |||
| Expressive Language | 100 | 8.2 (3.3) | 0.981 | NA | |||
| WHO-Motor | 4–24 | 6–15 | (n = 9) | free | (n = 152) | (n = 11) | |
| Gross Motor | 6 | 6 (2.7) | 0.86 | 0.80 |
a Average number of items assessed per study participant. The original ASQ-3 only has 6 items per scale.
b Data are Mean (Standard Deviation) in minutes, as recorded by the trainer during supervision activities.
c pc is 'per child' administration fee.
Test kits include record forms in packages of 100 for the Denver-II, packages of 30 for the BDI-2, and packages of 25 for the rest of the short tests and the Bayley-III. Information on costs last consulted on line in March 2016. The Denver-II is now freely available. The WHO-Motor was not available in Spanish; and only parts of the BDI-2 were available. The Bayley-III is available in Spanish since mid-2015. All other tests and manuals were available in Spanish.