Table 1.

Mean latencies on OVST for familiarity by confusability conditions for each grade

	Time 1						Time 2
	Visually confusable			Nonconfusable			Visually confusable			Nonconfusable
	Trained	Untrain	Illegal	Trained	Untrain	Illegal	Trained	Untrain	Illegal	Trained	Untrain	Illegal
Grade 1	1.022 (.045)	1.146 (.050)	1.067 (.056)	1.076 (.047)	0.993 (.064)	0.930 (.078)	0.789 (.052)	1.029 (.066)	0.801 (.058)	0.84 (.051)	0.636 (.066)	0.779 (.060)
Grade 2	0.677 (.024)	0.792 (.027)	0.787 (.030)	0.696 (.025)	0.580 (.034)	0.594 (.041)	0.636 (0.27)	0.692 (.035)	0.718 (.031)	0.608 (.027)	0.530 (.035)	0.532 (.032)
Grade 3	0.683 (.028)	0.685 (.031)	0.760 (.035)	0.662 (.029)	0.620 (.039)	0.632 (.048)	0.569 (.032)	0.641 (.041)	0.653 (.036)	0.568 (.031)	0.485 (.041)	0.532 (.037)

Mean OVST latencies (log seconds) and standard deviations for the grade level groups for each of the familiarity conditions (trained, untrained, and illegal target searches) by confusability conditions (search within arrays of visually confusable vs. nonconfusable letters) by test time