Table 1.
Means, Standard Deviations, and Correlations among Domain-General Ability, Numerosity, and Mathematics Outcome Variables (n-205)
| Variables | Raw Score |
Standard Score |
Correlations |
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Language |
||||||||||||||||||
| Mean | (SD) | Mean | (SD) | LF | LC | V | CF | NP | IA | EF | PL | VS | PS | NS | NL | NCs | WP | |
| Domain-General Abilities | ||||||||||||||||||
| Language Factor (LF) | 0.01 | (1.01) | -- | - | ||||||||||||||
| WDRB Listening Comprehension (LC) | 14.00 | (5.16) | 87.18 | (16.34) | 88 | - | ||||||||||||
| WASI Vocabulary (V) | 17.25 | (6.65) | 41.22 | (10.50) | 87 | 61 | - | |||||||||||
| Concept Formation (CF) | 9.42 | (5.47) | 95.00 | (13.44) | 52 | 54 | 44 | - | ||||||||||
| Nonverbal Problem Solving (NP) | 8.70 | (5.43) | 49.01 | (9.57) | 42 | 36 | 42 | 50 | - | |||||||||
| Attentive Behavior (IA) | 38.99 | (12.65) | -- | 49 | 46 | 45 | 47 | 42 | - | |||||||||
| WMTB Executive Function (EF) | -- | 76.24 | (18.28) | 55 | 50 | 42 | 48 | 51 | 48 | - | ||||||||
| WMTB Phonological Loop (PL) | -- | 96.60 | (17.65) | 43 | 39 | 25 | 33 | 27 | 31 | 49 | - | |||||||
| WMTB Visuospatial Sketchpad (VS) | -- | 78.56 | (15.14) | 30 | 24 | 21 | 31 | 42 | 32 | 47 | 32 | - | ||||||
| Processing Speed (PS) | 474.37 | (7.28) | 95.80 | (15.38) | 36 | 36 | 35 | 43 | 43 | 44 | 44 | 24 | 37 | - | ||||
| Numerosity Measures | ||||||||||||||||||
| Number Sets (NS) | 0.05 | (1.21) | -- | 47 | 45 | 47 | 59 | 51 | 59 | 53 | 28 | 35 | 51 | - | ||||
| Number Line Estimation (NL) | 22.48 | (7.75) | -- | 45 | 37 | 51 | 34 | 40 | 39 | 37 | 14 | 27 | 36 | 47 | - | |||
| Mathematics Outcomes | ||||||||||||||||||
| Number Combinations (NCs) | 20.44 | (12.15) | -- | 48 | 43 | 49 | 54 | 46 | 58 | 47 | 30 | 35 | 50 | 79 | 52 | - | ||
| Word Problems (WP) | 3.83 | (3.04) | -- | 54 | 49 | 51 | 58 | 49 | 52 | 59 | 31 | 34 | 42 | 65 | 45 | 66 | ||
Standard scores are mean=100 (SD=15) except for Wechsler Abbreviated Intelligence Scale Vocabulary and nonverbal problem solving, where mean=50 (SD=10). Multiply correlations by .01. Correlations involving Number Line Estimation are negative. WASI is Wechsler Abbreviated Intelligence Scale. WDRB is Woodcock Diagnostic Reading Battery. WJ III is Woodcock-Johnson Psycho-Educational Battery–Revised. Language is WDRB Listening Comprehension and WASI Vocabulary; Concept Formation is WJ III Concept Formation; Nonverbal problem solving is WASI Matrix Reasoning; WMTB is Working Memory Test Battery – Children; Attentive behavior is the SWAN; Processing Speed is WJ III Visual Matching; Arithmetic is the Test of Mathematics Fact Fluency.