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

Table 1

Experiment  1: mean values of glance measures to the text display (standard errors).

	Spaced text (𝑛=8)	Compressed text (𝑛=8)
Total glance time (s)	209.92 (28.24)	249.82 (35.99)
Mean duration (s)*	0.97 (0.12)	1.46 (0.18)
Standard deviation of durations (s)**	0.59 (0.05)	1.33 (0.21)
Max duration (s)*	3.47 (0.44)	8.89 (1.99)
Total frequency of glances	230.50 (30.08)	174.50 (22.72)
Frequency of >2 s glances*	13.38 (3.88)	38.75 (7.74)
Frequency of >2 s glances in curves*	2.00 (0.68)	8.88 (2.22)

*Significant difference at 0.05 level; **significant difference at 0.01 level (t-test, two-tailed, equal variances not assumed).