Table 1.
Means, Standard Deviations, Age Range and Standardized Test Standard Scores for each Group (3- vs. 4- vs. 5- year-olds) in Experiments 1 and 2
| 3-year-olds | 4-year-olds | 5-year-olds | ||||
|---|---|---|---|---|---|---|
| Exp. 1 | Exp. 2 | Exp. 1 | Exp. 2 | Exp. 1 | Exp. 2 | |
| Age | ||||||
| M | 41 | 43 | 54 | 53 | 63 | 64 |
| SD | 4 | 3 | 3 | 3 | 2 | 3 |
| Range | 36–47 | 37–47 | 48–59 | 48–59 | 60–69 | 60–70 |
| ROWPVT | ||||||
| M | 105 | 107 | 104 | 104 | 105 | 109 |
| SD | 10 | 12 | 13 | 11 | 8 | 11 |
| Range | 87–122 | 81–128 | 76–131 | 77–127 | 90–127 | 85–130 |
| EOWPVT | ||||||
| M | 106 | 103 | 105 | 100 | 105 | 105 |
| SD | 7 | 14 | 14 | 12 | 15 | 13 |
| Range | 93–118 | 83–135 | 83–136 | 68–127 | 74–129 | 83–133 |
| GFTA-2 | ||||||
| M | 109 | 109 | 110 | 108 | 110 | 107 |
| SD | 10 | 7 | 8 | 8 | 4 | 8 |
| Range | 89–123 | 95–120 | 92–119 | 92–120 | 99–116 | 89–117 |
Note. ROWPVT = Receptive One Word Picture Vocabulary Test (M = 100; SD = 15); EOWPVT = Expressive One Word Picture Vocabulary Test (M = 100; SD = 15); GFTA-2 = Goldman Fristoe Test of Articulation Second Edition (M = 100; SD = 15).