Table 5.

Estimates of Fixed Effects for Item Keying in the Explanatory IRTree Model

Node 1: Trait direction	Item keying	${\beta }_{\mathrm{trait}\mathrm{direction}:\mathrm{keying}}$	SE	p
	Positively keyed	4.756	0.447	<.001
	Negatively keyed	3.193	0.440	<.001
Node-2: Extremity (low trait)	Item keying	${\beta }_{\mathrm{extremity}\left(\mathrm{low}\mathrm{trait}\right):\mathrm{keying}}$	SE	p
	Positively keyed	−2.075	0.383	<.001
	Negatively keyed	−2.015	0.343	<.001
Node-3: Extremity (high trait)	Item keying	${\beta }_{\mathrm{extremity}\left(\mathrm{high}\mathrm{trait}\right):\mathrm{keying}}$	SE	p
	Positively keyed	−0.363	0.342	.289
	Negatively keyed	0.143	0.342	.676

Note. IRTree = item response tree; SE = standard error.