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. 2021 Sep 13;12:739962. doi: 10.3389/fpsyg.2021.739962

Table 4.

Hierarchical regression analysis predicting writing improvement with self- and peer feedback (N = 116).

	Step 1 (β)	Step 2 (β)
Model 1
Feedback amount_SF	−0.22^*	−0.24^*
Feedback types_SF	0.22^*	0.21^*
Amount of SF implemented	0.29^**	0.18⁺
Feedback amount_PF		−0.24^*
Feedback types_PF		0.18⁺
Amount of PF implemented		0.32^**
R ²	0.152^***	0.252^***
ΔR²		0.101^**
Model 2
Feedback amount_PF	−0.28^**	−0.24^*
Feedback types_PF	0.18⁺	0.18⁺
Amount of PF implemented	0.40^***	0.32^**
Feedback amount_SF		−0.24^*
Feedback types_SF		0.21^*
Amount of SF implemented		0.18⁺
R ²	0.159^***	0.252^***
ΔR²		0.093^**

⁺

p < 0.06;

^*

p < 0.05;

^**

p < 0.01;

^***

p < 0.001.