With this labyrinth Nos. 7, 998, 15, 16, 151, and
152 were tested. At first a record was kept of
the time which elapsed from the instant the animal
entered I to the instant it emerged at O,
of the path which it followed, and of the number of
errors which it made; but later only the number of
errors was recorded.
THE ROLE OF SIGHT
Labyrinth-B Experiments
NO. 7
NO. 998
TEST DATE TIME ERRORS TIME ERRORS
1 June 16 66” 8 127”
19
2 16 11 0 94
12
3 16 15 2 18
3
4 16 7 0 13
2
5 16 5 0 10
1
6 18 61 15 12
3
7 18 13 3 14
4
8 18 14 5 8
1
9 18 24 9 16
2 10 18 10 1 9 1
11 19 36 13 80 17 12
19 8 3 10 1 13
19 6 1 7 1 14 19
9 1 8 0 15 19 12
2 7 0 16 20 14
1 25 0 17 20 28 3 18
20 No efforts No efforts
to
escape to escape
TABLE 32
LABYRINTH-B EXPERIMENTS
with
Electric Shock given as Punishment for Mistakes
No. 7 No. 998
TEST DATE CONDITION ERRORS CONDITION ERRORS
1 June 29 Light 4 Light 9
2 29 Light 1 Light 3
3 29 Light 1 Light 2
4 29 Light 0 Light 0
5 29 Light 0 Light 0
6 29 Light 0 Light 0
7 29 Light 1 Light 0
8 29 Light 0 Light 0
9 29 Light 1 Darkness 0
10 29 Light 1 Light 0
11 29 Light 1 Darkness 0
12 29 Light 0 Light 0
13 29 Light 0 Light 0
14 29 Light 0 Light 0
15 29 Light 0 Light 0
16 29 Light 0 Light 0
17 29 Darkness 2 Darkness 0
18 29 Light 2 Light 0
with paper
19 29 Light 0 Light 0
20 29 Darkness 0 Light 0
with paper
21 29 Light 0 Light 0
22 29 Light 0 Darkness 0
23 29 Light 0 Odorless 0
24 June 29 Light 0 Darkness 0
25 29 Light 0
26 29 Darkness 4
