Modeling developmental data using U-shaped threshold dose-response curves

This paper develops threshold models for developmental toxicity data. The distinguishing feature of these threshold models is their flexibility in modeling data below threshold with a U-shaped function if the data warrants. The method is applied to actual data from a developmental study which exhibits U-shaped behavior in early dose groups. Results from a simulation study demonstrate the flexibility of the threshold model to pick up on U-shaped trends in the data. In addition, the simulation study reveals important considerations in design of developmental studies.     

The Organization and Dynamics of Adolescent Conflict with Parents and Friends

In telephone interviews, 212 adolescents described all disagreements arising the preceding day that involved parents or friends. Conflicts were organized in a similar manner in both relationships: Topics, resolutions, and outcomes were linked together and were usually tied to affect afterward. The specific dynamics of conflict, however, varied in a manner that reflects differences in relationship power and stability. Relative to those with friends, parent‐child conflicts more often involved a combination of daily hassle topics, neutral or angry affect afterward, power‐assertive resolutions, and win‐lose outcomes. Relative to those with parents, friend conflicts more often involved a combination of relationship topics, friendly affect afterward, disengaged resolutions, and equal or no outcomes. Most differences in disagreement dynamics were not a function of differences in the rate at which topics of conflict arose in each relationship: Across topics, parents usually reported more coercion than friends, and friends usually reported more mitigation than parents.     

黄侃字词关系研究学术史价值考察

黄侃先生字词关系研究为后代积累了系统的文献文字材料,构架了文字系统研究的整体脉络,确定了语言文字研究的最终目标。但在概念的把握上有矛盾的地方,体现出鲜明的时代特点。     

Modeling cross-price effects on inter-category dynamics: The case of three computing platforms

Existing research on the market evolution model focused on new product sales growth for a single product category. Accordingly, this approach did not imply any interactions among separate but related product categories that could affect each other's market growth. However, the importance of analyzing these inter-category relationships is emphasized because such an analysis helps managers to better understand the underlying market dynamics and develop more profitable product-line strategies for a multi-product market.     

Feeling Caught Between Parents: Adult Children's Relations With Parents and Subjective Well‐Being

Research on divorce has found that adolescents’ feelings of being caught between parents are linked to internalizing problems and weak parent‐child relationships. The present study estimates the effects of marital discord, as well as divorce, on young adult offspring's feelings of being caught in the middle (N =632). Children with parents in high‐conflict marriages were more likely than other children to feel caught between parents. These feelings were associated with lower subjective well‐being and poorer quality parent‐child relationships. Offspring with divorced parents were no more likely than offspring with continuously married parents in low‐conflict relationships to report feeling caught. Feelings of being caught appeared to fade in the decade following parental divorce. These results suggest that, unlike children of divorce, children with parents in conflicted marriages (who do not divorce) may be unable to escape from their parents’ marital problems—even into adulthood.     

Response to Commentaries:

It is time to bring nature (genetics) together with nurture (environment) in the study of social development. Following a brief overview of behavioral genetic theory and methods, three examples are described of new genetic research especially relevant to social developmentalists. First, initial research findings on three key domains of social development (attachment, empathy, and social competence) suggest that genetic factors contribute to individual differences in social development. Second, research on widely used measures of social environment implicates a genetic contribution, which opens up new directions for research at the interface of nature and nurture in social development. Third, by the turn of the century, it is predicted that behavioral genetic research will be conducted using DNA markers that assess genetic variation among individuals directly rather than resorting to indirect estimates based on twin and adoption methods. This will revolutionize behavioral genetic research and make it more accessible and applicable to developmentalists. As a first step in the direction of behavioral genetics, social developmentalists are encouraged to include siblings in their research.     

补救服务公平性对顾客与企业关系的影响

作者在广州白云机场对我国几家大型航空公司的乘客进行了一次问卷调查,探讨补救性服务公平性和顾客消费情感对顾客与企业关系的影响.数据分析结果表明,交往公平性影响顾客的负面情感,服务公平性、顾客感觉中的服务质量和顾客消费情感对顾客满意感、顾客信任感、顾客与服务人员的人际关系纽带、顾客与企业的感情纽带、顾客再购意向和口头宣传意向都有直接或间接的影响.     

关于腐败的文化分析

在制度和道德视角之外再通过文化视角来探究中国的权力腐败现象是相当有用的一种方法。相对于国家法规等正式规则而言被称为"潜规则"的中国人情传统,对于权力腐败的影响也是不可小视的,它生长于中国宗法族制的悠久历史和人情大国的深厚土壤;亲情重于理法是其基本价值定位;以情谋私是其主要功利目的;血缘、乡缘、学缘、业缘四个圈子是其畅行其道的基本依托;人情开道、旁门左道是其基本交往方式;由腐败走向制度失灵是其不可避免的结果。     

Relating Individual Control, Social Understanding, and Gender to Child–Friend Interaction: A Relationships Perspective

According to a relationships perspective, it is critical to consider how the individual behaviors and characteristics of both partners shape their social interaction. Adopting a relationships approach to the investigation of children's friendships, we examined how preschool children's and their friends’ controlling behaviors, social understanding, and gender were related to their dyadic interaction. Child–friend dyads (n = 49) were videotaped in two laboratory play sessions (free play and sharing task), and child interviews assessed understanding of emotions and false beliefs. Both children's indirect control was associated with coordinated play during the free play session, and both children's direct control was associated with conflict during the sharing task. Moreover, dyadic interaction varied as a function of study children's social understanding, friends’ social understanding, and play session. An interaction between gender composition and play session also emerged for dyadic conflict. Multiple regression analyses suggested that study children's controlling behaviors accounted for associations between dyadic interaction and more ‘distal’ individual factors (i.e., social understanding, gender). The findings underscore the need to examine how both children's individual competencies are related to the quality of their dyadic interaction and illuminate how the associations between individual factors and dyadic interaction are moderated by the interactive context.     

Context and Age Differences in Same‐ and Other‐gender Peer Preferences

Age and gender differences in preferences for same‐ and other‐gender peers as partners for working on a school project and casual interactions at home were investigated. Participants were 82 students (19 sixth‐grade preadolescents; 29 eighth‐grade adolescents; 34 tenth‐ and eleventh‐grade older adolescents). Same‐gender preferences were assessed via peer nominations and ratings of expected enjoyment of interacting with same‐ and other‐gender peers. Preferences varied by context: individuals expected to enjoy same‐gender peers more than other‐gender peers when working on a project at school but not when interacting casually at home. Greater expected enjoyment of same‐gender peers over other‐gender peers was most pronounced for preadolescent boys and girls, and least pronounced for older adolescent males. Nominations of same‐gender peers for home and school activities decreased with age. Results are interpreted in light of a social‐contextual approach to gender segregation.