Research Article
Assessment of Validity of Children’s Movement Skill Quotient (CMSQ) Based on the Physical Education Classroom Environment
Table 5
Differential item functioning across age groups (7 years vs. 8 years; 8 years vs. 9 years).
| Item | Age (7 years old= Ref. vs. 8 years old) | Age (8 years old= Ref. vs. 9 years old) | DIF | Joint | Rasch-Welch | DIF | Joint | Rasch-Welch | Contrast | SE | t | df | Prob. | Contrast | SE | t | df | Prob. |
| CS01 | 1.15 | 0.51 | 2.24 | 295 | 0.03b | 0.13 | 0.69 | 0.19 | 317 | 0.85 | CS02 | –0.25 | 0.39 | –0.64 | 348 | 0.52 | 0.22 | 0.44 | 0.50 | 322 | 0.62 | CS03 | –0.04 | 0.34 | –0.13 | 348 | 0.90 | 0.41 | 0.32 | 1.31 | 325 | 0.19 | CS04 | –0.05 | 0.25 | –0.20 | 347 | 0.84 | –0.09 | 0.26 | –0.36 | 335 | 0.72 | CS05 | 0.38 | 0.25 | 1.52 | 346 | 0.13 | –0.26 | 0.26 | –0.98 | 335 | 0.33 | CS06 | 0.12 | 0.26 | 0.46 | 345 | 0.64 | –0.21 | 0.28 | –0.76 | 334 | 0.45 | CS07 | 0.08 | 0.25 | 0.34 | 347 | 0.74 | –0.13 | 0.26 | –0.51 | 335 | 0.61 | CS08 | –0.02 | 0.25 | –0.08 | 347 | 0.94 | 0.02 | 0.27 | 0.08 | 334 | 0.94 | CS09 | 0.06 | 0.29 | 0.22 | 348 | 0.83 | –0.18 | 0.28 | –0.62 | 335 | 0.53 | CS10 | 0.38 | 0.30 | 1.26 | 348 | 0.21 | –0.17 | 0.29 | –0.61 | 335 | 0.54 | CS11 | –0.05 | 0.27 | –0.16 | 346 | 0.87 | 0.21 | 0.30 | 0.68 | 329 | 0.50 | CS12 | –0.57 | 0.27 | –2.08 | 348 | 0.04b | 0.49 | 0.29 | 1.67 | 325 | 0.10 | CS13 | –0.11 | 0.25 | –0.46 | 347 | 0.65 | 0.49 | 0.26 | 1.85 | 333 | 0.07 | CS14 | –0.41 | 0.27 | –1.56 | 345 | 0.12 | –0.47 | 0.28 | –1.69 | 335 | 0.09 |
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Note: DIF: differential item functioning; t: t-statistic; df: degrees of freedom; b; SE: standard errors of the measures. |