整合性学习观的动物行为模型探索

我国当下的学习观以渐进性学习为主。研究尝试提出“整合性学习”的学习观, 以40只SD大鼠为被试,采用2(学习方式：整合/渐进)×2(性别：雄/雌)组间设计,运用14单元组合T迷宫进行五阶段的动物行为建模。结果显示,1)学习错误次数上,整合少于渐进、雄性少于雌性;2)整合较渐进学习效果的迁移性更好;3)各组皆出现对第一段原正确路径的固着。由此得出：整合性学习更长效,习得的知识具有整体性、组块化、范畴化的可迁移的特征。     

Improving spelling for at‐risk kindergartners through element skill frequency building

A student's ability to spell affects literacy outcomes. Students profit from explicit spelling instruction but may also benefit from frequency building or systematic practice. The method of frequency building leads toward effortless performance or behavioral fluency. Reaching certain frequencies of behavior produces a critical learning outcome called application. The current study focused on the effects of building element spelling behaviors for at‐risk kindergartners and the subsequent application to a compound spelling skill. Visual and quantitative analysis suggest a clear experimental effect between the attainment of performance criterion for letter sounds, letter naming, and sequencing on students' spelling behavior. A discussion of the results precedes future research directions.     

公共政策情境中行为习惯的形成机制与培养策略

引导社会成员重塑日常良好行为习惯是增强公共政策有效性的重要路径和切入点, 洞悉并把握行为习惯的形成机制对具体培养策略的制定和实施大有裨益。行为习惯是指通过高频重复的奖励习得, 在记忆中形成的情境与反应之间的内隐联结。作为一种特殊的内隐记忆系统, 行为习惯具有自动化、情境线索依赖性、对当前奖励低敏感性等特征。行为习惯的形成机制包含两个独立且共发的习得机制, 即联结习得机制和奖励习得机制。在日常良好行为习惯的形成初期, 目标引导着个体对行为价值的习得。在培养社会成员日常良好行为习惯的过程中, 应将情境线索的稳定性、高频行为的低认知重复以及奖励的合理设置, 作为公共政策助推社会成员养成日常良好行为习惯的三大核心策略。未来的研究方向应着力于加强习惯研究的学科视阈融合, 更新行为习惯领域的研究范式, 重置公共设施以提升有益行为的易达性, 以及引入商业模式以共促社会成员日常良好行为习惯的重塑。     

儿童行为抑制性与心理障碍关联的认知神经过程

行为抑制型儿童相较于普通儿童更容易在童年中期和青春期出现心理障碍, 具有更高的发展风险性。此类儿童比非抑制型儿童表现出更多的退缩动机、更长的预期过程与前注意过程、更少的注意控制、对负性信息更多的注意偏向、异常活跃的反应监控过程和更慢的习惯化过程。这些与心理障碍患者相似的认知神经过程是儿童行为抑制性与心理障碍间的重要联系途径, 并能作为预测指标筛选有更高发展风险性的个体。除儿童本身的特质外, 环境因素也能通过塑造认知神经过程, 进而影响儿童的发展结果。因此在未来的研究中, 可以考虑不同文化背景下的儿童行为抑制性与心理障碍关联的认知神经过程差异。进而从个体特质和环境因素两方面寻找行为抑制型儿童发展的保护性因素。     

儿童虐待与问题行为：基因与环境的作用

当前预防虐待之所以成为儿童保护的重要内容,不仅是法理上的儿童权益保护,也因虐待关联的基因与环境作用对人发展的长期影响。儿童虐待与问题行为关系复杂,已有研究显示,虐待特征、受害者特点是其关联因素,但其内在机制并不清楚。随着分子遗传学的兴起,MAOA、COMT、5-HTT等基因为解释儿童虐待与问题行为的机制提供新视角,重要候选基因可能调节这一关系。未来研究可从动物模型和纵向追踪角度去探究儿童虐待与问题行为关系的易感期、保护因子,完善儿童虐待与个体发展关系的研究图谱。     

Fetal behavioral responses to the touch of the mother’s abdomen: A Frame-by-frame analysis

The aim of the present study was to examine whether fetuses respond to the touching of the mother’s abdomen, and if they do, whether they differentiate based on familiarity and the source of the touch, utilizing 3D real-time (4D) sonography.Behavioral responses of 28 fetuses (20th to 33rd week of gestation; N = 15 in the 2nd and N = 13 in the 3rd trimester) were frame-by-frame coded using a coding system comprising 20 codes and were analyzed in four conditions, during the touch of the (1) mother, (2) the father, (3) the stranger and in a (4) no-touch, control condition.Fetuses showed differential responses to the touch, in particular in the duration of their reaching out to touch the uterus wall in the four conditions, and self-touch, dependent on the gestational age of the fetus. Fetuses in the 3rd trimester touched the uterus wall significantly longer than fetuses in the 2nd trimester did, when the mother touched compared to the control condition. At the same time, fetuses in the 3rd trimester also touched themselves less during the mother’s touch, compared when the stranger touched and also compared to the control condition.This differential response of the older fetuses might be due to the maturation of the central nervous system, and may indicate the emergence of a proprioceptive self-awareness by the 3rd trimester.     

Self-guided behavioral skills training: A public health approach to promoting nurturing care environments

The World Health Organization identified the promotion of “Nurturing Care Environments” as a global health priority. Responsive caregiving, 1 of 5 domains describing nurturing care, is critical for healthy child development. Relatively little research has evaluated population-level interventions aimed to increase responsive caregiving during the first 1,000 days of an infant's life. In this pilot study, we evaluated an intervention designed for population-level dissemination that targeted responsive caregiving. The self-guided behavioral skills training aimed to teach mothers to imitate infant vocalizations. The intervention was delivered within an on-line asynchronous training. All 3 mothers increased vocal imitative behavior following training without receiving coaching or behavior-specific feedback from an implementer. The results offer a preliminary proof of concept with implications for population-level intervention design and evaluation.     

A National Survey of Social Justice Engagement Among Professional Counselors

This exploratory survey examined the relationship between 169 professional counselors’ social justice engagement and demographic, personality, and contextual factors. A hierarchical regression analysis indicated that counselors’ sexual orientation, trait extraversion, and postgraduate training predicted their level of engagement in social justice behaviors. The authors recommend that counselor training in social justice be focused on quality, rather than quantity, and that personality and identity characteristics of individuals be incorporated into pedagogical practices.     

THE CRISPR APPLE ON THE TREE OF KNOWLEDGE CONFERENCE HIGHLIGHTS: CRISPR IN SCIENCE,ETHICS, AND RELIGION

The Institute on Religion in the Age of Science (IRAS) asked Ted Peters, an eminent theologian and bioethicist who was at the forefront of the cloning and stem cell debates in the past few decades, and myself, a molecular biologist, to invite scholars from various fields to brainstorm the religious and ethical implications of the CRISPR revolution. We invited keynote speakers, whose talks will be covered here, as well as other speakers and poster presentations. The conference also hosted question and answer sessions, chaplain sessions, and discussions throughout the week at the beautiful Star Island in the summer of 2019. The purpose of this paper is to highlight and sample the discussions and presentations from that conference. I will organize them into three broad topics: CRISPR in science, ethics, and religion. For readers unfamiliar with CRISPR technology, this overview can also serve as an introduction to the field, and a stepping stone for future ideas for CRISPR discussions.