Research Article
Letter and Colour Matching Tasks: Parametric Measures of Developmental Working Memory Capacity
Table 3
Equivalence tests among WM scores.
| | Age group (years) | -test | CMT-Simple | | WMp | | CMT-Complex | -test |
| | 7-8 | −2.19 | 2.43 (1.24) | ≠ | 3 | = | 2.83 (0.94) | ns | | 9-10 | 3.07 | 4.92 (1.50) | ≠ | 4 | = | 4.12 (1.27) | ns | | 11-12 | ns | 5.38 (1.16) | = | 5 | = | 4.86 (1.28) | ns | | 13-14 | ns | 6.05 (0.65) | = | 6 | = | 5.50 (1.77) | ns | | 15-16 | −3.67 | 6.64 (0.49) | ≠ | 7 | = | 6.80 (0.82) | ns | | 18+ | ns | 6.88 (0.33) | = | 7 | = | 7.19 (0.90) | ns |
| | Age group (years) | -test | LMT-Simple | | WMp | | LMT-Complex | -test |
| | 7-8 | −2.73 | 2.36 (1.09) | ≠ | 3 | = | 2.77 (0.81) | ns | | 9-10 | −2.55 | 3.16 (1.65) | ≠ | 4 | ≠ | 3.24 (0.93) | −4.11 | | 11-12 | ns | 4.86 (1.11) | = | 5 | = | 4.67 (1.15) | ns | | 13-14 | −4.67 | 4.73 (1.28) | ≠ | 6 | = | 5.32 (1.62) | ns | | 15-16 | −5.56 | 5.96 (0.93) | ≠ | 7 | ≠ | 6.48 (1.19) | −2.18 | | 18+ | −5.20 | 6.31 (0.68) | ≠ | 7 | = | 6.73 (1.54) | ns |
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Note. = 0.05. Equivalence tests were computed using one sample -tests. WMp: predicted WM, =: equivalent, and ≠: not equivalent (SD).
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