Figure 1
Example of (a) Path Clutterness and (b) Endpoint Crowding each with three levels (baseline, single, multiple).
Note. Sets of sequence examples used in the experiment. Pink circles are targets (can also be used to form clutterness/crowding) in the sequence; Yellow circles are distractors only (not part of the sequence). Solid white lines with an arrow show the direction of the sequence. Red dashed lines show the clutter zone of each sequence path. The grayed area in each circle shows overlap with the clutter zone. Note that all lines are invisible, and there is no color differentiation between circles during the actual experiment. (a). Path Clutterness: Only the 4th path is cluttered in the single level; Multiple paths are cluttered in the multiple level. (b). Endpoint Crowding: Only the 5th circle’s location is crowded in the single level; Multiple circles’ locations are crowded in the multiple level.
Figure 2
Average hit rate (top) and response time (bottom) by clutterness (left), crowding (right), and by level.
Note. Grey shade represents levels (baseline, single, multiple) for each of clutterness or crowding. Data points represent individual performance data. Error bars show the standard error around the mean.
Figure 3
Average hit rate with standard error across experiment time points.
Note. The experiment session consists of 12 blocks with 10 trials each. Three blocks are collapsed into one time point for illustration purposes. Grey shade represents the level of clutterness or crowding.