不同促销方式对产品购买决策的影响—— 基于解释水平理论视角的研究

赠品促销与价格促销对消费者购买决策的影响研究结果尚存在分歧。根据解释水平理论, 通过三个实验探究了赠品促销产品组合与价格促销产品组合在不同任务类型、不同时间距离条件下的促销效果差异。结果表明：(1)不同时间距离下, 消费者对促销产品决策存在差异。赠品促销方式在近期将来购物场景下的促销效果比在远期将来购物场景下的促销效果更好; 价格促销方式在远期将来购物场景下的促销效果比在近期将来购物场景下的促销效果更好。价格支付意愿任务下, 消费者对远期将来场景下促销产品的感知价值比近期将来购物场景下促销产品的感知价值高; 购买可行性任务下, 消费者对近期将来购物场景下促销产品的感知价值比远期将来购物场景下促销产品的感知价值高。(2)时间距离对促销方式与任务类型的表征水平匹配关系有增强、扩大作用。购买可行性任务下, 与远期将来时间相比, 消费者更倾向于在近期将来时间条件下选择赠品促销产品组合。价格支付意愿任务下, 与近期将来时间相比, 消费者更倾向于在远期将来时间条件下选择价格促销产品组合。     

Microstructure and mechanical behavior of nanostructured composite Cu60Fe40 alloy

In this study, bulk nanostructured composite Cu₆₀Fe₄₀ alloy is prepared by a combustion synthesis technique. The prepared Cu₆₀Fe₄₀ alloy consists of Cu(Fe) solid solution and Fe(Cu) solid solution phases. The large-scaled compositional segregation in the Cu-rich and Fe-rich phases is not observed, respectively. A few micron-sized dendrite (Fe(Cu) solid solution) is embedded into the nanostructured matrix (Cu(Fe) solid solution). The grain size of the matrix is in the range 50–300?nm. The yield and fracture strength of the Cu₆₀Fe₄₀ alloy are 540 and 1050?MPa, respectively, and the fracture strain obtained from the compression test is about 20.9%. The Cu₆₀Fe₄₀ alloy displays notable work hardening in the compressive deformation.     

言语工作记忆的保持对时间知觉的影响*

采用工作记忆和时间判断的双任务范式,探讨了言语工作记忆的保持过程对时间知觉的影响。研究中操作记忆负荷和任务之间的时间间隔(ISI:记忆刺激消失到时间判断任务开始之间的时间间隔)。结果发现,记忆负荷越大,知觉到的时间越短,韦伯比例越低,反应时间越长;ISI越短,知觉到的时间变短,反应时间越长,这表明知觉时间和反应决策是一致的,不存在累加时间和反应判断之间的trade-off。但是记忆负荷和ISI的交互作用不显著。结果表明记忆负荷和ISI以不同的方式影响时间判断,言语工作记忆的保持和时间加工共享工作记忆资源。     

Children Exposed to Marital Conflict Exhibit More Disordered Eating Behaviors: Child Emotional Insecurity and Anxiety as Mechanisms of Risk

Disordered eating in children is a major public health concern, as it is precursor to clinical eating disorders and obesity. However, little is known about the potential causes of child disordered eating. The current study examined marital conflict as a predictor of disordered eating in a sample of children aged 5–12 years, from the perspective of emotional security theory. Ninety five children and their parents in the Southeast United States participated in the study. We found that marital conflict was associated with higher levels of restrained eating, emotional eating and external eating behaviors controlling for demographics and parental feeding practices. Further, we examined the possible pathways between marital conflict and child disordered eating and found that marital conflict was related to greater child emotional insecurity about the family, which was associated with greater child anxiety, which were then related to disordered eating. In addition to serving as a secondary pathway linking emotional insecurity to child disordered eating, anxiety also significantly directly mediated the association between marital conflict and all three types of disordered eating: restrained eating, emotional eating and external eating in children. Next we examined if parental feeding practices (food monitoring, food restriction and parental pressure to eat) moderate the relation between marital conflict and child disordered eating. Parental pressure to eat was negatively associated with child disordered eating under higher marital conflict. The current study highlights the importance of marital conflict and child emotional security as precursors of child disordered eating.     

Motor knowledge is one dimension for concept organization: Further evidence from a Chinese semantic dementia case

Neuropsychological and neuroimaging studies have indicated that motor knowledge is one potential dimension along which concepts are organized. Here we present further direct evidence for the effects of motor knowledge in accounting for categorical patterns across object domains (living vs. nonliving) and grammatical domains (nouns vs. verbs), as well as the integrity of other modality-specific knowledge (e.g., visual). We present a Chinese case, XRK, who suffered from semantic dementia with left temporal lobe atrophy. In naming and comprehension tasks, he performed better at nonliving items than at living items, and better at verbs than at nouns. Critically, multiple regression method revealed that these two categorical effects could be both accounted for by the charade rating, a continuous measurement of the significance of motor knowledge for a concept or a semantic feature. Furthermore, charade rating also predicted his performances on the generation frequency of semantic features of various modalities. These findings consolidate the significance of motor knowledge in conceptual organization and further highlights the interactions between different types of semantic knowledge.     

干细胞技术与肝硬化:共性与个性的新实践

干细胞横向分化(transdifferentiation)的能力,在肝脏再生过程中发挥作用,随着对干细胞的深入研究,干细胞技术为终末期肝病的治疗提供了新思路。本文对干细胞加以分类并综述了各种干细胞研究进展,对干细胞在肝脏疾病细胞治疗上的应用及前景作了总结和展望。     

山东东周鼎簋制度初论——以中原地区为参照

鼎簋制度作为社会存在的一种反映,是一个动态的概念,把用鼎规格普遍、有序的提升归结为僭越有形而上学之嫌。春秋中期至战国中期,中原高级墓葬一般随葬数套列鼎,是鼎簋制度的套鼎时期,也是鼎簋制度的高峰期。以往多认为战国中晚期是鼎簋制度的瓦解、崩溃时期,实际上,这一时期随葬列鼎的现象仍然普遍存在,鼎簋制度并没有瓦解,其瓦解期应在秦汉。由于历史、地理等原因,山东地区的鼎簋制度与中原地区存在较大差异:一是山东多数地区没有严格推行鼎簋制度;二是山东地区鼎簋制度的基础较为薄弱,瓦解现象出现较早,瓦解速度也较快;三是春秋中晚期至战国早、中期普遍流行于中原的套鼎现象,山东地区基本没有发现。     

定向遗忘研究的进展

定向遗忘是关于记忆研究的一种实验范式,也是记忆心理学家非常关注的热点问题。本文主要阐释了基于代价———收益原则的定向遗忘研究范式,探讨了定向遗忘的研究方法,揭示了定向遗忘可能存在的机制,并结合实证研究论述了定向遗忘研究的进展。     

Chinese subject-relative clauses are more difficult to process than the object-relative clauses

This paper presents an experiment that compared high and low working memory span readers' abilities to process Chinese subject-relative and object-relative clause structures in a self-paced reading paradigm. Comprehension performance results indicated that the object-relative structure was easier to understand than the subject-relative structure. Reading time results showed that participants with low working memory span read the subject-relative structures more slowly than the object-relative structures, but there was no reading time difference for the high working memory span participants. The experiment provides further evidence that the Chinese subject-relative clause structure is more difficult to process than the Chinese object-relative clause structure, especially for low working memory span individuals. Furthermore, these results support a syntactic storage account of the observed complexity difference.     

突发公共事件的心理健康服务体系的建构

突发公共事件的心理应急救助是我国心理健康服务体系的一个重要组成部分.突发公共事件需要心理救助,心理救助也是突发公共事件危机管理的组成部分.严重突发事件的心理健康服务包含事前的准备、应急和善后的完整建构.突发公共事件的心理健康服务的应急预案应包含完善的应急组织管理指挥、系统完整的过程评估、分级分类的响应、强有力的应急救援保障、综合救援的应急队伍.在运作上应该遵循综合预防、协同应对和规范管理三个基本原则.