Assessing Short- and Long-Term Repeatability and Stability of Personality in Captive Zebra Finches Using Longitudinal Data
Assessing Short- and Long-Term Repeatability and Stability of Personality in Captive Zebra Finches Using Longitudinal Data
复制标题
DOI：
10.1111/j.1439-0310.2012.02085.x
复制
发表时间：
2012-10-01
期刊：
影响因子：
1.7
通讯作者：
Cezilly, Frank
中科院分区：
文献类型：
--
作者：
David, Morgan;Auclair, Yannick;Cezilly, Frank
评估行为的一致性对于理解人格特征的演变至关重要。在本研究中，我们研究了短期和长期的重复性和稳定性的两个无关的人格特质的探索倾向和挣扎率为圈养雌性斑胸草雀（Taeniopygia guttata）。我们进行了两次实验性的行为测试，间隔为7个月，这代表了斑胸草雀预期寿命的四分之一。我们发现，总体而言，探索性倾向和挣扎率在短期内具有显著的可重复性。然而，只有探索性的趋势在长期内是可重复的。我们发现个体间的差异，短期稳定的探索倾向，但不是挣扎率，提供证据的差异，在个体内变异。从长期来看，两次实验之间的挣扎率显著下降，而探索倾向保持稳定。最后，在两次会议上测量的个体间变异量没有差异。我们的研究结果表明，人格的短期和长期可重复性和稳定性可能会因个体而异，这取决于受审查的行为特征。因此，从受试者生命早期实现的测量中推断人格应该谨慎进行。我们讨论了个体间和个体内的个性一致性差异对个体适应性的影响。
Assessing behavioural consistency is crucial to understand the evolution of personality traits. In the present study, we examined the short- and long-term repeatability and stability of two unrelated personality traits exploratory tendencies and struggling rate using captive female zebra finches ( Taeniopygia guttata). We performed two experimental sessions of behavioural tests with a 7-mo interval, which represents up to one quarter of a zebra finch's life expectancy. We showed that, overall, exploratory tendencies and struggling rate were significantly repeatable in the short term. However, only exploratory tendencies were repeatable in the long term. We found interindividual differences in short-term stability of exploratory tendencies, but not struggling rate, providing evidence for differences in intraindividual variability. In the long term, struggling rate significantly decreased between the two experimental sessions, whereas exploratory tendencies remained stable. Finally, the amount of interindividual variation measured at both sessions did not differ. Our results suggest that short- and long-term repeatability and stability of personality may vary between individuals, depending on the behavioural trait under scrutiny. As a consequence, deducing personality from measures realized earlier in a subject's life should be performed with caution. We discuss the implications of inter- and intraindividual variation in personality consistency on individual fitness.