Table 1. Basic bootstrap 95% confidence intervals for test statistics derived from the median and SD speed, s_i(t), turning speed, α_i(t), and magnitude of acceleration, a_i(t), of individual fish.

Statistically significant effects are marked with an asterisk (*) (that is, confidence intervals for the test statistics that lie entirely above or below 0). If a confidence interval lies entirely below zero, then the associated quantity decreased from the ante-cue interval (A) to the post-cue interval (P); if a confidence interval lies entirely above zero, then the associated quantity increased from A to P. Analysis of control group data revealed any underlying temporal effects; food and alarm cue effects were then adjusted to take into account these underlying effects of time.

Variable	Control	Food	Alarm
Median si(t) (mm/s)	−12.73 to 1.43	−0.40 to 21.28	−25.87 to −7.99*
SD si(t) (mm/s)	−3.83 to 2.46	−0.86 to 7.19	−7.86 to 0.04
Median αi(t) (rad/s)	−0.08 to 0.08	−0.14 to 0.08	0.22 to 0.74*
SD αi(t) (rad/s)	−0.82 to 1.15	−2.14 to 0.38	1.82 to 4.98*
Median ai(t) (mm/s2)	−26.80 to −2.27*	4.93 to 48.07*	−36.03 to −4.02*
SD ai(t) (mm/s2)	−29.62 to 51.57	−20.41 to 94.01	−54.03 to 45.03