Table 3.

Estimated Item Measures and 95% Confidence Intervals for All Tasks in Our Experiment

Type of Task	Item Measures
Orientation (double objects)	–2.17 (–2.26 to –1.05)
Direction of motion (people)	–1.31 (–2.08 to –0.24)
Orientation (single object)	–1.20 (–2.19 to 0.20)
Direction of motion (escalator)	–0.95 (–2.38 to 0.92)
Depth discrimination	–0.92 (–1.06 to –0.35)
Object localization	–0.78 (–1.24 to 0.64)
Size discrimination (double objects)	–0.36 (–0.42 to –0.14)
Size discrimination (triple objects)	–0.08 (–1.16 to 1.45)