JEANPIAGET
LEVVIGOTSKY
NOAMCHOMSKY
JEROMEBRUNNER
FREDERICSKINNER
L
N
S
F
R
C
N
O
A
M
C
H
O
M
S
K
Y
A
D
B
P
A
U
U
A
H
H
I
S
M
U
T
F
B
D
A
O
S
E
C
Q
Z
W
Q
U
O
N
F
R
J
B
F
A
N
B
K
N
I
C
S
N
C
O
P
E
J
E
K
G
N
W
L
U
U
A
M
B
C
O
O
D
G
V
R
A
G
M
W
O
E
O
G
S
U
L
I
E
Z
D
B
O
A
S
O
W
T
K
V
O
V
E
A
R
I
O
H
W
M
U
N
U
F
O
T
E
V
O
I
I
A
A
O
I
N
E
A
O
E
O
Q
I
E
M
I
C
A
S
D
K
D
D
B
P
O
L
W
W
O
P
G
S
G
V
Q
S
A
O
A
R
G
Q
O
D
B
F
C
K
A
A
O
N
D
A
T
W
U
U
U
H
O
G
S
I
L
I
I
U
T
T
X
Y
R
N
X
O
Y
I
M
N
Z
E
V
Q
P
A
S
W
P
M
N
H
A
L
L
N
A
X
X
R
A
C
N
E
K
Q
F
E
K
X
I
E
T
V
X
T
Q
E
H
V
A
W
Y
U
R
X
U
R
D
W
O
A
U
W
B
U
X
A
E
A
K
U
F
Q
Q
U
U
G
O
E
G
W
V
A
G
J
J
I
W
U
