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Fig. 7. Bees failed to use the colour and position of the exit hole in a priming
compartment to select the colour of a rewarded stimulus. Top shows the
training arrangement. The bees' task is to approach the blue panel after
passing through the blue exit hole and the yellow panel after passing through
the yellow exit hole. Blue- and yellow-rewarded stimuli frequently switched
sides. Bottom shows the performance of a group of six bees when passing
through the blue exit hole on the left (with which training began) or the
yellow exit hole on the right. Over a training period of 79 trials, bees
failed to learn to pick the rewarded yellow screen after passing through the
yellow exit hole. Bees developed a blue preference that was independent of the
exit hole through which they left the priming compartment.
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