Cahalan K J, Graham D L
Dev Psychobiol. 1978 Jan;11(1):1-4. doi: 10.1002/dev.420110104.
Gunn rat dams were tested for differential retrieval of their jaundiced versus non-jaundiced offspring in 2 experiments. In Experiment 1, in which testing took place every day from Day 1 to Day 8 postpartum, non-jaundiced pups were retrieved significantly faster than jaundiced pups. In Experiment 2, in which testing took place every other day from Day 1 to Day 15 and the pups were weighed each test day, the order of retrieval of the 4 gender/genotype (jaundiced vs non-jaundiced) classifications as found in the 1st experiment was replicated and the non-jaundiced pups tended to be retrieved faster. Heavier pups were retrieved significantly faster than lighter pups, indicating that weight or size may be a cue to differential retrieval.
在两项实验中，对冈恩大鼠母鼠区分其黄疸和非黄疸后代的情况进行了测试。在实验1中，从产后第1天到第8天每天进行测试，结果显示非黄疸幼崽的被找回速度明显快于黄疸幼崽。在实验2中，从第1天到第15天每隔一天进行测试，并且在每个测试日对幼崽称重，实验1中发现的4种性别/基因型（黄疸与非黄疸）分类的找回顺序得到了重复，非黄疸幼崽往往被找回得更快。较重的幼崽被找回的速度明显快于较轻的幼崽，这表明体重或体型可能是区分找回的一个线索。
