Gurski J C, Davis K, Scott J P
Dev Psychobiol. 1980 Sep;13(5):463-7. doi: 10.1002/dev.420130504.
This experiment concerns 2 issues: the time of onset of the process of social attachment in the dog, and the nature of the interaction between the emotion of separation distress and that caused by discomfort. The subjects were 48 puppies from 4 genetic backgrounds: beagles, Telomians, and their reciprocal F1 hybrids. Puppies were divided into 4 groups nd isoalted for short periods under comfortable and uncomfortable conditions beginning at 3, 11, 17, and 25 days from birth. The dependent variable was distress vocalization during a 10-min period. Separation distress did not occur before 11 days and remained at a low level until 21 days, when it rose rapidly. The process of attachment is thus initiated in the transition period but does not reach a high level until some 2 weeks later. Interaction between the 2 kinds of affect is compatible and additive.
狗的社会依恋过程开始的时间，以及分离痛苦情绪与不适引起的情绪之间相互作用的性质。实验对象是48只来自4种基因背景的幼犬：比格犬、特洛米安犬及其相互杂交的F1代杂种犬。幼犬被分成4组，从出生后第3天、第11天、第17天和第25天开始，在舒适和不舒适的条件下短时间隔离。因变量是10分钟内的痛苦叫声。分离痛苦在11天前未出现，直到21天前一直处于低水平，之后迅速上升。因此，依恋过程在过渡期开始，但直到大约两周后才达到高水平。两种情感之间的相互作用是相容且累加的。
