18-07-2018 | Original Article | Uitgave 1/2019 Open Access

Spatial grounding of symbolic arithmetic: an investigation with optokinetic stimulation
- Tijdschrift:
- Psychological Research > Uitgave 1/2019
Electronic supplementary material
Introduction
Experiment 1
Participants
Apparatus and stimuli
Procedure
Behavioural data
Description of indices and analyses
Deviation
Decade errors
Results
Accuracy and RTs
Deviation
Decade errors
Eye-tracking data
Index
|
Description
|
Interpretation
|
---|---|---|
MeanFN
|
The mean center of gravity of eye position during the presentation of the first number
|
Low values indicate relatively leftward/downward spatial exploration
High values indicate relatively rightward/upward spatial exploration
|
MeanR
|
The mean center of gravity of eye position during the response phase
|
Low values indicate relatively leftward/downward spatial exploration
High values indicate relatively rightward/upward spatial exploration
|
ShiftAFN
|
The displacement of mean eye position occurring from the alert sound to the presentation of the first number
|
Negative values indicate a leftward/downward displacement of spatial attention
Positive values indicate a rightward/upward displacement of spatial attention
|
ShiftSNR
|
The displacement of mean eye position occurring from the presentation of the second number to the response phase
|
Negative values indicate a leftward/downward displacement of spatial attention
Positive values indicate a rightward/upward displacement of spatial attention
|
Description of indices and analyses
Results
Horizontal axis
Vertical axis
Discussion
Experiment 2
Participants
Apparatus, stimuli, and procedure
Behavioural data
Description of indices and analysis
Results
Accuracy and RTs
Deviation
Decade errors
Eye-tracking data
Description of indices and analyses
Results
Horizontal axis
Vertical axis
Discussion
General discussion
Acknowledgements
Compliance with ethical standards
Conflict of interest
Ethical approval
Informed consent
Appendix
Stimulus
|
First number
|
Operator
|
Second number
|
Correct
|
Stimulus
|
First number
|
Operator
|
Second number
|
Correct
|
---|---|---|---|---|---|---|---|---|---|
1
|
88
|
Minus
|
64
|
24
|
16
|
77
|
Minus
|
34
|
43
|
2
|
82
|
Minus
|
57
|
25
|
17
|
87
|
Minus
|
44
|
43
|
3
|
92
|
Minus
|
67
|
25
|
18
|
81
|
Minus
|
37
|
44
|
4
|
94
|
Minus
|
68
|
26
|
19
|
82
|
Minus
|
38
|
44
|
5
|
55
|
Minus
|
28
|
27
|
20
|
81
|
Minus
|
35
|
46
|
6
|
61
|
Minus
|
34
|
27
|
21
|
71
|
Minus
|
24
|
47
|
7
|
62
|
Minus
|
35
|
27
|
22
|
74
|
Minus
|
27
|
47
|
8
|
93
|
Minus
|
66
|
27
|
23
|
93
|
Minus
|
46
|
47
|
9
|
82
|
Minus
|
54
|
28
|
24
|
87
|
Minus
|
36
|
51
|
10
|
88
|
Minus
|
55
|
33
|
25
|
97
|
Minus
|
44
|
53
|
11
|
97
|
Minus
|
64
|
33
|
26
|
81
|
Minus
|
27
|
54
|
12
|
62
|
Minus
|
28
|
34
|
27
|
91
|
Minus
|
37
|
54
|
13
|
83
|
Minus
|
48
|
35
|
28
|
92
|
Minus
|
35
|
57
|
14
|
84
|
Minus
|
49
|
35
|
29
|
96
|
Minus
|
34
|
62
|
15
|
81
|
Minus
|
45
|
36
|
30
|
92
|
Minus
|
29
|
63
|
1
|
27
|
Plus
|
29
|
56
|
16
|
48
|
Plus
|
37
|
85
|
2
|
34
|
Plus
|
27
|
61
|
17
|
43
|
Plus
|
45
|
88
|
3
|
29
|
Plus
|
33
|
62
|
18
|
35
|
Plus
|
53
|
88
|
4
|
27
|
Plus
|
36
|
63
|
19
|
63
|
Plus
|
26
|
89
|
5
|
49
|
Plus
|
23
|
72
|
20
|
54
|
Plus
|
35
|
89
|
6
|
49
|
Plus
|
26
|
75
|
21
|
66
|
Plus
|
25
|
91
|
7
|
33
|
Plus
|
45
|
78
|
22
|
36
|
Plus
|
56
|
92
|
8
|
56
|
Plus
|
25
|
81
|
23
|
59
|
Plus
|
34
|
93
|
9
|
53
|
Plus
|
28
|
81
|
24
|
28
|
Plus
|
65
|
93
|
10
|
37
|
Plus
|
44
|
81
|
25
|
65
|
Plus
|
29
|
94
|
11
|
44
|
Plus
|
38
|
82
|
26
|
45
|
Plus
|
49
|
94
|
12
|
36
|
Plus
|
46
|
82
|
27
|
67
|
Plus
|
28
|
95
|
13
|
34
|
Plus
|
48
|
82
|
28
|
33
|
Plus
|
64
|
97
|
14
|
26
|
Plus
|
56
|
82
|
29
|
63
|
Plus
|
35
|
98
|
15
|
47
|
Plus
|
37
|
84
|
30
|
43
|
Plus
|
55
|
98
|