Table 5.

Results of the regression analyses on relative thresholds and false alarm rates from the practice sessions for all four observers and all three target-present stimuli in Experiment 2. Note that all $\widehat{\beta }$ values were reliably different from 0 (p < .05) except for those marked with⁺.

	Threshold				False Alarms
Observer	Stimulus	Intercept	$\widehat{\beta }$	R2	Intercept	$\widehat{\beta }$	R2
1	top	0.476	−1.764	0.92	−2.471	0.378	0.58
	bottom	0.128	−1.376	0.91	−2.187	0.277	0.50
	both	−0.467	−1.184	0.86	−2.187	0.280	0.52
2	top	0.875	−1.929	0.92	−1.834	0.225	0.58
	bottom	0.876	−1.836	0.92	−1.890	0.231	0.51
	both	0.143	−1.405	0.97	−3.088	0.825	0.61
3	top	−0.129	−0.224	0.24	−1.655	−0.179+	0.12
	bottom	0.003	−0.231	0.28	−1.827	−0.081+	0.02
	both	0.834	−0.269	0.18	−1.764	−0.221+	0.20
4	top	0.247	−1.327	0.58	−1.893	0.042+	0.02
	bottom	0.286	−1.619	0.95	−1.835	0.034+	0.02
	both	−0.342	−0.507	0.66	−2.631	0.266	0.34
$\overline{X}$				0.70			0.34