Table 9. Estimates of fixed effects ^a .

						95% Confidence interval
Parameter	Estimate	Std. Error	df	t	Sig.	Lower bound	Upper bound
Intercept	4.844	0.501	37.203	9.672	0.000	3.830	5.859
Period	0.122	0.005	44101.510	23.105	0.000	0.111	0.132
Condition	-1.435	0.026	44353.786	-54.713	0.000	-1.486	-1.383
Session	0.024	0.004	44201.130	5.350	0.000	0.015	0.033
Age	-0.031	0.009	37.000	-3.319	0.002	-0.050	-0.012
Profession	0.970	0.382	37.000	2.541	0.015	0.196	1.743
Rater gender	-0.073	0.264	37.000	-0.276	0.784	-0.608	0.462
Instrument	-0.349	0.360	37.000	-0.970	0.338	-1.079	0.380
Presently in sing group	0.746	0.372	37.000	2.006	0.052	-0.007	1.500
Sing group	-0.470	0.309	37.000	-1.519	0.137	-1.097	0.157
PWDexp	-0.614	0.384	37.000	-1.600	0.118	-1.391	0.163

^a Dependent variable: rating.