Table 3. Building an Extended SRM of Celebrity-Body Talk with Self-Reports as Predictors.

	Parameter	Model
		1	2	3
Fixed	μ	1.914 [1.80, 1.99]	1.906 [1.78, 1.99]	1.919
(Ego)	Self-Report (β1)	0.221 [0.11, 0.33]	0.232 [0.09, 0.37]	0.237
	Drive-Thin (β2)		−0.031 [−0.14, 0.08]	−0.002
	Interaction (β3)			−0.002
(Alter)	Self-Report (α 1)	0.036 [−0.07, 0.14]	−0.002 [−0.02, 0.01]	−0.025
	Drive-Thin (α2)		0.017 [0.002, 0.03]	0.017
	Interaction (α3)			-0.002
Random	Dyadic ρR	.277 [.11, .44]	.285 [.09, .45]	.273
	Generalized ρEA	−.216 [-52, .12]	−.184 [-49, .17]	−.188
	Residual σR	0.699 [0.66, 0.74]	0.701 [0.66, 0.74]	0.700
	Ego σε	0.514 [0.42, 0.62]	0.510 [0.42, 0.62]	0.515
	Ego ΔR2	19.0% [4.0, 37.0]	20.5% [5.3, 38.5]
	Alter σδ	0.370 [0.29, 0.46]	0.347 [0.26, 0.44]	0.344
	Alter Δ R2	1.8% a [0.0, 16.0]	16.4% [1.6, 39.0]
NEffb		626	682	583
Fit	WAIC (pD)	3586.0 (442.5)	3592.6 (444.3)	3591.5 (442.9)
	ΔWAIC (SE)		6.6 (6.2)	1.1 (5.6)

Note. EAPs are reported along with BCIs in brackets. BCIs excluded from Model 3 to save space, but adding the nonsignificant interaction terms did not substantially affect other estimates.

^aPosterior median reported instead of mean (EAP) due to extreme skew.

^bMultivariate effective sample size.