Which line is the longest?

A
B
C
All are the same
This illusion has a long research history. It seems that people living in ur­ban­ized areas perceive the lines as rep­re­sent­ing the corners of rec­ti­lin­ear objects viewed in per­spec­tive, being more sus­cep­ti­ble to illusion than people from rural areas.

Answers distribution

A
B
C
All are the same
answers
flagMalaysia
0%
6%
0%
93%
16
flagthe United Arab Emirates
0%
0%
0%
93%
15
flagFrance
0%
5%
2%
88%
35
flagNorway
0%
11%
0%
88%
27
flagItaly
3%
7%
0%
88%
26
flagSpain
5%
5%
0%
88%
18
flagPakistan
6%
6%
0%
87%
16
flagthe United States
3%
6%
2%
86%
789
flagthe Netherlands
0%
10%
2%
86%
37
flagFinland
0%
13%
0%
86%
15
flagPoland
2%
9%
1%
85%
10847
flagGermany
2%
8%
2%
85%
140
flagthe United Kingdom
3%
10%
1%
83%
342
flagCanada
0%
18%
0%
81%
48
flagAustralia
2%
13%
2%
81%
37
flagBelgium
0%
20%
0%
73%
15
flagIndia
10%
11%
3%
71%
182
flagRepublic of Ireland
4%
20%
2%
69%
43
flagDenmark
6%
18%
6%
68%
16
flagthe Philippines
23%
7%
3%
61%
26

Gender

men87%
women88%
A
3%
1%
B
7%
8%
C
1%
1%
All are the same
87%
88%

Language versions

question
answers
results
flag
Which line is the longest?
1515
82%

Details

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