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Children with Developmental Coordination Disorder: (Wuang et al., 2012; n = 144, mean age = 7 years, 7 months)

• SEM for Manual Dexterity = 0.31
• SEM for Aiming & Catching = 0.92
• SEM for Balance = 0.54
• SEM for Total Score = 0.52

Children with Developmental Coordination Disorder: (Wuang et al., 2012)

• MDC for Manual Dexterity = 0.72
• MDC for Aiming & Catching = 2.14
• MDC for Balance = 1.26
• MDC for Total Score = 1.21

Children with Developmental Coordination Disorder: (Wuang et al., 2012)

• MCID for Manual Dexterity = 0.76
• MCID for Aiming & Catching = 1.78
• MCID for Balance = 0.52
• MCID for Total Score = 2.36

Typically Developing Children: (Ellinoudis et al., 2011; n = 183, mean age = 50 (7.8) months)

• Test 1:
  • Manual Dexterity: mean = 25.61 (6.15)
  • Aiming and Catching: mean = 23.86 (5.09)
  • Balance: mean = 32.73 (6.59)
  • Total Score: mean = 81.85 (14.70)
• Test 2 (1 week after Test 1):
  • Manual Dexterity: mean = 26.21 (6.10)
  • Aiming and Catching: mean = 25.29 (5.36)
  • Balance: mean = 32.54 (6.82)
  • Total Score: mean = 84.05 (16.23)

Typically Developing Children: (Ellinoudis et al., 2011)

• Adequate test-retest reliability for Manual Dexterity (ICC = 0.82)
• Excellent test-retest reliability for Aiming and Catching (ICC = 0.96)
• Excellent test-retest reliability for Balance (ICC = 0.90)

Children with Developmental Coordination Disorder: (Wuang et al., 2012)

• Excellent test-retest reliability for Manual Dexterity (ICC = 0.97)
• Excellent test-retest reliability for Aiming and Catching (ICC = 0.91)
• Excellent test-retest reliability for Balance (ICC = 0.97)
• Excellent test-retest reliability for Total Score (ICC = 0.97)

Typically Developing Children: (Ellinoudis et al., 2011)

• Excellent intra-rater reliability (ICC = 0.96)

Children with Developmental Coordination Disorder: (Wuang et al., 2012)

• Excellent internal consistency for Manual Dexterity (Cronbach¡¯s alpha = 0.81)
• Excellent internal consistency for Aiming & Catching (Cronbach¡¯s alpha = 0.84)
• Excellent internal consistency for Balance (Cronbach¡¯s alpha = 0.88)

Predictive validity:

Typically Developing Children: (Ellinoudis et al., 2011)

• Excellent predictive validity of Total Score using Manual Dexterity score (r = 0.74)
• Excellent predictive validity of Total Score using Aiming & Catching score (r = 0.70)
• Excellent predictive validity of Total Score using Balance score (r = 0.71)

Concurrent validity:

Children with and without Motor Impairments: (Schoemaker et al., 2012; n = 383, mean age = 6 years, 9 months; Dutch sample)

• Adequate concurrent validity between total motor score from MABC-2 Checklist and total MABC-2 test score (r = -0.38)
• Adequate concurrent validity between total score of Developmental Coordination Disorder Questionnaire and total motor score from MABC-2 Checklist (r = -0.36)

Construct Validity:

Dutch Children with and without Motor Impairments: (Schoemaker et al., 2012)

• Excellent for MABC-2 Checklist (Cronbach¡¯s alpha = 0.94)

Discriminant Validity:

Dutch Children with and without Motor Impairments: (Schoemaker et al., 2012)

• Excellent when comparing mean total motor scores from MABC-2 Checklist between typically developing children and children with motor impairment/at risk for motor impairment at ages 5 (p < 0.001), 6 (p = 0.002), 7 (p < 0.001), and 8 (p = 0.002)

Typically Developing Children: (French et al., 2018)

• Using standard test protocols (n = 35, mean age = 9.5 (0.5), age range = 8-10; female = 20 (57%)), a high percentage of children reached top scores on 4 tasks (37-91%)
• Testing children on higher age band items (n = 161, mean age = 9.1 (0.7), age range = 8-10, female = 103 (64%)), this ceiling effect was reduced but still present on 3 tasks (45-78%)
• Modifying and re-testing these 3 tasks (n = 81, mean age = 8.6 (1.7), age range = 7-10; female = 44 (54%)) still showed strong ceiling effects (32-79%)
• MABC-2 appears to be designed to discriminate between performances only at the lower end of the scale to identify children with motor impairments