High maternal aggression in dwarf hamsters (Phodopus campbelli and P. sungorus)

The defense of offspring, termed maternal aggression, is a highly conserved behavior in mammals, including rodents. This study examined relative levels of maternal aggression in two closely related dwarf hamster species, Phodopus campbelli and P. sungorus, that normally inhabit high latitude, boreal environments. When tested with first litters and with the breeder male remaining with the female (for P. campbelli the male is necessary for successful rearing of offspring), both species exhibited high levels of maternal aggression with average duration of aggressive behavior>80 sec for a 10 min test. For P. sungorus, males are not required to rear offspring. P. sungorus females with either one or multiple litters (singly housed after impregnation) exhibited significantly higher levels of aggression (>300 sec) relative to females co‐housed with the sires. In terms of species differences in attack style, P. campbelli exhibited a boxing or clawing strategy for ～50% of total attack time, but for P. sungorus, this form of attack occurred<5% of the time. For P. sungorus, attacks to the vulnerable belly and flank constituted>90% of all attacks, but these regions were attacked ～50% of the time for P. campbelli. A survey of levels of maternal aggression of rodents in other genera suggests that maternal aggression in Phodopus is at the high end of the spectrum. Results of this study suggest that the presence of the breeder male may actually suppress aggression in P. sungorus. This fact, as well as its high level of aggression and its distant relationship to mice and rats, suggest P. sungorus as a possible model for future studies on the neurobiological basis of maternal aggression. The relationship between the high rates of maternal aggression and life history strategy in Phodopus is discussed. Aggr. Behav. 00:000–000, 2005. © 2005 Wiley‐Liss, Inc.     

儿童气质和父母教养方式与其陌生环境中语言表达水平

通过对64名7岁北京市儿童的实验室观察来了解他们气质特点和语言表达水平,并对儿童家长进行教养方式的问卷调查。研究发现父母的教养方式尤其是父亲的严格教养方式,与儿童的语言表达水平有显著正相关;儿童的气质与其语言表达水平的相关在个别维度上显著;儿童的气质与其父母的教养方式间存在一定的相互影响,二者相互作用共同影响着儿童的语言表达水平。     

7岁儿童语言表达的影响因素分析

通过对64名7岁北京市儿童的实验室观察来了解他们气质特点和语言表达发展状况,并对儿童家长进行教养方式和家庭社会经济地位的调查。研究发现家庭收入对儿童的语言表达发展有一定的影响;父母教养方式尤其是父亲的严格教养方式．与儿童的语言表达发展有密切联系;儿童的气质与其语言表达发展的关系在个别维度上显著;儿童气质与父母教养方式的相互作用对语言表达水平存在着影响。     

儿童早期的自我调控发展

儿童的自我调控在生后就存在并逐渐发展起来,是神经心理的不断成熟以及与环境相互作用的结果,主要涉及情绪过程、认知过程和社会过程,包含了很多策略和技巧。自我调控理论强凋儿童的能动性和灵活性。气质特点可能是造成情绪调控过程中个体差异的一个重要因素,在儿童决定采取调控策略时起着重要的作用。自我调控与行为和社会问题关系密切,幼儿若存在自我调控能力的问题,在有冲突的情形下发生行为问题的倾向较高。     

Sibling relationship quality in early adolescence: child and maternal perceptions and daily interactions

Correspondence between child and maternal perceptions of sibling relationship quality (standards, actual ratings, problems) and children's reports of daily interactions were assessed in 40 early adolescent children (M age=11.5 yrs) and their mothers (n=32). Children completed the Sibling Relationship Questionnaire (Furman & Buhrmester, 1985. Child Development, 56, 448–461) and Daily Checklist ratings of sibling interactions for 14 days. Mothers completed the Parental Expectations and Perceptions of Children's Sibling Relationship Questionnaire (Kramer & Baron, 1995. Family Relations, 44, 95–103). Overall, findings revealed correspondence between child perceptions of sibling warmth and maternal ratings of standards, actual ratings, and problems in sibling warmth but not conflict and rivalry. Maternal and child perceptions of sibling relationship qualities were positively associated with children's reports of ongoing interactions. Finally, regression analyses identified unique maternal and child correlates for both happy and prosocial daily interactions. Findings are discussed in light of recent research and theory on family dynamics. Copyright © 2010 John Wiley & Sons, Ltd.     

青少年气质对其情绪调节的影响：教师情感能力的作用

青少年情绪调节近年来受到越来越多研究的关注,但环境变量是如何通过个体内变量对情绪调节施加影响还不清楚,我们现在采用多层线性模型探索教师情感能力在青少年学生气质影响其情绪调节中的作用。研究选取7-12年级1385名男女学生,和对应的36名班主任,分别施测学生问卷--情绪调节问卷、青少年早期气质问卷和教师情感能力问卷。结果表明：在学生水平,认知重评与气质维度的努力控制和亲和性正相关,与激情负相关;抑制只和负性情感正相关。在教师水平,教师的情感管理减弱了激情和亲和性对认知重评的影响,而教师的情感沟通增加了亲和性对认知重评的影响;教师的情感管理增强了负性情感对抑制的作用,反而教师情感理解降低了负性情感对抑制的作用。因此,气质的不同维度对学生情绪调节的影响不同,教师情感能力的不同方面对这种影响发挥着不同的调控作用。提示在开展情感教学过程中,对不同气质学生选择不同的情感策略有利于提高学生情绪调节的效果。     

气质的遗传因素:基因多态性研究

气质是婴儿出生以后最早表现出来的一种人格特征,而人格特征的形成具有一定的生物学基础。气质作为人格特征的组成单元,与人格特征享有共同的生物过程。因此,与成年人人格特征相关的基因也有可能影响儿童气质。本文在成年人的人格特征研究的基础上,针对早期儿童发展的特点,讨论了可能影响早期儿童气质的候选基因。研究成人的人格特征与基因的相关性不能排除环境因素的影响,本文强调了对早期儿童气质与基因多态性之间的关系进行直接研究的重要性。     

BTL—QZ—V1．1气质测试系统的修订

修订BTL-QZ-V1．1气质测试系统。对519名12—21岁男女学生进行了测量。结果发现：神经系统特性具有年龄差异,随年龄增长兴奋性、抑制性增强,灵活性、稳定性增高;12～14岁是其快速增长期,14～18岁为慢速增长期,18岁后为稳定期;神经系统的兴奋性、抑制性具有性别差异,男生强于女生;可将气质类型划分为10种,年龄和性别不影响气质类型的分布;除灵活性外,神经系统兴奋性、抑制性和稳定性的重测信度系数在0．6～0．8之间,且达到显著性水平;以80·8神经类型量表为效标,所得相关系数达中等程度。提示BTL-QZ-V1．1气质测试系统的评定需按年龄和性别分组进行,建立的分组标准较为准确科学,信度、效度较高,可以广泛应用。     

童年早期社会能力的发展：一个潜变量增长模型

对119名幼儿进行历时两年的三次追踪测试, 采用潜变量增长建模, 检验童年早期的社会能力是否呈线性增长, 并考察气质、性别、母亲受教育程度及其交互作用对社会能力发展水平与速度的预测作用。结果发现：(1)社会能力在两年中呈线性增长, 起始水平及发展速度均存在显著的个体差异; (2)女孩起始的社会能力水平高于男孩; 母亲受教育程度越高, 儿童起始的社会能力水平就越高; (3)气质节律性对社会能力增长速度的预测因儿童性别而异：节律性能够负向预测女孩社会能力的增长速度、正向预测男孩社会能力的增长速度。