Figure 6.

Local cues and the development of directionality. Half of the circular track was enriched with small objects and textures (local cues). (A) The mean directionality index is plotted for fields expressed on the cue-rich and cue-poor halves of the track. (B) During the first lap, field directionality on the cue-rich and cue-poor halves of the track did not differ significantly (t-test, p = 0.16). Over the session, fields on both parts of the track became significantly more directional (paired t-tests, p < 0.01); however, fields on the cue-rich part of the track increased directionality less than fields on the cue-poor side, and directionality was significantly different between regions on the last lap (t-test, p < 0.001).