Table 1.

Percentage of first responses that were changed on second response. Thus, at low prevalence in Experiment 1a, only 9.2% of targets missed on first response were found on the second, 10.5% in Experiment 1b, and 29.9% in Experiment 2.

Experiment/ Prevalence	Miss to Hit	Correct Absent to False Alarm	Hit to Miss	False Alarm to Correct Absent
Experiment 1a
Low (2%)	9.2%	0.4%	0.0%	9.7%
High (50%)	5.9%	0.4%	0.0%	6.8%
Experiment 1b
Low (2%)	10.5%	0.6%	0.0%	2.8%
High (50%)	8.0%	0.6%	0.4%	2.3%
Experiment 2
Low (2%)	29.9%	1.7%	0.5%	2.4%
High (50%)	16.7%	1.9%	0.4%	10.1%