Giorgio Vallortigara
Cervello di gallinaUna finestra sulla natura umana
Hollard and Delius (1982) Science
Maguire et al. (2000) PNAS
Tempo trascorso come guidatore di taxi (mesi)
Grandezza dell’ippocampoposteriore
0 50 100 150 200 250 300 350 4000
4
2
0
-2
-4
-6
Object permanenceObject permanence
THE DELAYED RESPONSE TASK:TESTING (day 5)
20 separate trials were given to each chickinter-trial interval = 10sec
Correct choices %
0102030405060708090
Control Group Experimental Group
30
40
50
60
70
80
90
Delay= 0 sec
Delay= 10 sec
Co
rrec
t ch
oic
e
%
Sham-operated NCL-lesioned
Chiandetti and Vallortigara, subm.
90°
45°10°
45°
80°10°
The difference in mind between humansand the higher animals, great as it is, certainly is one of degree not kind.
C. Darwin (1882) The Descent of Man
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