Model fit statistics | Total sample n=300 |

Overall model fit, χ^{2} value | 44.54 |

Degree of freedom (df) | 28 |

*P value | 0.0245 |

Item fit residuals (mean (SD)) | 0.30 (1.22) |

Person fit residuals (mean (SD)) | –0.18 (0.85) |

Person Separation Index | 0.85 |

Coefficient alpha | 0.89 |

Unidimensionality test (% that goes beyond 95% CI) | 3.7% CI (1.2 to 6.1) |

*The p value 0.007 means significant at level 0.05 because the number of items is seven (0.05/7=0.007). Therefore, any p value greater than 0.007 would be considered non-significant.