Variable

Level

Fixation Error

Selection Errors

Fixations

Array Type

Horizontal

0.24°

0.0%

3.55

Vertical

0.36°

2.5%

3.51

Grid

0.44°

F(2,22) = 8.03*

3.3%

No variance

3.72

F(2,22) = 2.70, n.s.

Spacing

2°

0.36°

2.8%

3.68

3°

0.39°

F(1,11) = 2.88, n.s.

1.9%

F(1,11) = 1.72, n.s.

3.59

F(1,11) = 10.56*

Packed

No

0.38°

2.3%

3.43

Yes

0.37°

F(1,11) = 2.45, n.s.

2.4%

F(1,11) = 0.17, n.s.

3.84

F(1,11) = 21.35*

* p<.01

Note: No two-way or higher interactions were significant.