第5题答案就是E. Even when demonstrator hens reacted with obvious disgust to a specific food, via vigorous head shaking and bill wiping, there was no evidence that observers subsequently avoided eating that food. DH厌恶－react－observer不会明显不去吃 if observer hens watched demonstrator hens react favorably to food of a particular color, then observer hens ate more food of that color than they ate of food of other colors. DH喜欢－react－observer明显也喜欢
结合上面两点，说明DH在喜欢时“欢呼雀跃”，厌恶时也没“垂头丧气” E. Demonstrator hens alteredtheir behavior lessobviously in response to noxious foods than in response to highly palatable foods.
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发表于 2010-5-28 10:21:45
