Measuring Distraction at the Levels of Tactical and Strategic Control: The Limits of Capacity-Based Measures for Revealing Unsafe Visual Sampling Models

Table 2

Experiment  2: mean values of glance measures to the text display (standard errors).

	Spaced text (𝑛=9)	Compressed text (𝑛=9)
Total glance time (s)*	157.08 (8.61)	255.08 (32.44)
Mean duration (s)	1.41 (0.12)	1.83 (0.21)
Standard deviation of durations (s)	0.49 (0.06)	0.97 (0.23)
Max duration (s)*	2.97 (0.34)	6.15 (1.29)
Total frequency of glances	116.44 (9.38)	139.67 (9.70)
Frequency of >2 s glances*	13.33 (5.15)	36.56 (8.68)
Frequency of >2 s glances in curves*	2.33 (1.64)	12.67 (4.30)

*Significant difference at 0.05 level (𝑡-test, two-tailed, equal variances not assumed).