Difficulty parameters | ||
---|---|---|

Models | \(\delta _{1}^{ne}=(-1.6,1,1.45)\) | \(\delta _{1}^{fa}=(-2.1,1,2.75)\) |

(r,F,Z
_{1},U
_{
a
})_{
a=1,2}
| \(\delta _{2}^{ne}=(-0.8,1.15,1.9)\) | \(\delta _{2}^{fa}=(-1.25,1.4,3.3)\) |

(adjacent,logistic,
Z
_{1},U
_{
a
}
)
_{
a=1,2}
| Balanced responses | Focus on center categories (1 and 2) |

(cumulative,logistic,
Z
_{1},U
_{
a
}
)
_{
a=1,2}
| Focus on extreme categories (0,1 and 3) | Balanced responses |