Table 4.

MIO and PE Fidelity Scale item factor loadings and mean comparisons

Scale item	Factor Loadings					Mean (SD)		t
	1	2	3	4	5	MIO	PE
UNIQUE TO MIO
• MENTALIZING FOR CHILD AND RELATIONSHIP						2.06 (.84)	1.48 (.61)	2.42*
1. Developmental guidance about child’s emotional needs and attachment-based parenting strategies	.12	.79	.43	.20	−.08
2. Explores thoughts and emotions underlying the child’s behavior	.44	.79	.13	.09	.03
3. Explores mother’s mental representations of her child and their relationship	.32	.76	.13	−.06	.07
• MENTALIZING FOR SELF						3.48 (1.49)	.86 (.66)	6.38*** a
4. Explores thoughts and emotions underlying mother’s behaviors	.92	.21	.07	.06	.08
5. Helps mother make sense of her own thoughts and emotions	.90	.19	−.10	.14	−.10
6. Explores how mother’s thoughts and emotions might affect the child	.79	.46	.13	−.00	−.03
UNIQUE TO PE						1.63 (.64)	2.24 (.90)	−2.40*
7. Developmental guidance about child behavior and behavior-based parenting strategies.	.02	.20	.97	−.00	−.03
8. Developmental guidance about child’s physical safety.	.03	.21	.97	.05	−.04
GENERIC						4.00 (.06)	3.98 (.14)	.49
9. Builds alliance through listening and making encouraging, supportive statements	.12	.08	.15	.86	.14
10. Remains neutral during descriptions reflecting questionable parenting attitudes and strategies.	.04	.03	−.08	.89	.11
11. Assists mother to address concrete, practical problems or immediate crises when asked.	−.03	.03	−.07	.25	.96

^aEqual variances not assumed

^*p < .05;

^**p < .01;

^***p < .001, two-tailed