Segmentation of object outlines into parts: a large-scale integrative study

In this study, a large number of observers (N=201) were asked to segment a collection of outlines derived from line drawings of everyday objects (N=88). This data set was then used as a benchmark to evaluate current models of object segmentation. All of the previously proposed rules of segmentation were found supported in our results. For example, minima of curvature (i.e. locations along the contour where negative curvature takes an extreme value) were often used as segmentation points. The second point of a pair connected by a segmentation line often depended on more global shape characteristics such as proximity, collinearity, symmetry, and elongation. Based on these results, a framework is presented in which all of the previously proposed (and now empirically validated) segmentation rules or rules for part formation are integrated.     

Dynamics of the dyad: How mothers and infants co-construct interaction spaces during object play

Studies of dyadic interaction often examine infants’ social exchanges with their caregivers in settings that constrain their physical properties (e.g., infant posture, fixed seating location for infants and adults). Methodological decisions about the physical arrangements of interaction, however, may limit our ability to understand how posture and position shape them. Here we focused on these embodied properties of dyadic interaction in the context of object play. We followed 30 mother–infant dyads across the first year of life (at 3, 6, 9, and 12 months) and observed them during 5 min of play with a standard set of toys. Using an interval-based coding system, we measured developmental change in infant posture, how mothers and infants positioned themselves relative to one another, and how they populated interaction spaces with objects. Results showed that mother–infant dyads co-constructed interaction spaces and that the contributions of each partner changed across development. Dyads progressively adopted a broader spatial co-orientation during play (e.g., positioned at right angles) across the first year. Moreover, advances in infants’ postural skills, particularly increases in the use of independent sitting in real time, uniquely predicted change in dyadic co-orientation and infants’ actions with objects, independent of age. Taken together, we show that the embodied properties of dyadic object play help determine how interactions are physically organized and unfold, both in real time and across the first year of life.     

“There's more love between us”: The parental experience of attending Mellow Babies,a targeted,early intervention program for parents and their babies

It is recognized that parenthood in the context of psychosocial adversity can have negative implications for infant development. Parenting programs are the first line of intervention to improve outcomes for families; however, evidence for the effectiveness of group-based, targeted early interventions is still scarce. Preliminary findings indicate Mellow Babies (MB) as a promising group-based parenting program for families at risk for parenting difficulties. Using thematic analysis, we aimed to understand: (i) the aspects of the intervention that enabled parents to complete the program and (ii) the relational and behavioral changes perceived as valuable for parents and their babies post-intervention. In total, 68 parents residing in the United Kingdom were interviewed after completing MB (49 mothers and 19 fathers; 88% self-identified as British). Three themes and six subthemes were generated from the data. Parents identified several intervention components as beneficial, including the facilitators' interpersonal skills and multi-dimensional, group-based approach. Participant reflections highlighted three underlying mechanisms that enabled positive change: (i) the sense of community cultivated within the group, (ii) the process of formulating and re-conceptualizing one's difficulties, and (iii) the opportunity to reshape interpersonal interactions. Findings are discussed within the context of perinatal and infant mental health.     

幼儿气质与母亲教养方式的选择

采用ＴＴＱ儿童气质问卷、母亲教养方式问卷和访谈法,对３－５岁３２２名幼儿气质及其母亲教养方式进行调查,探求幼儿气质对母亲教养方式的影响,以提高母亲对其子女教养水平和有效性。研究结果表明：幼儿气质是影响母亲教养方式的重要因素,其作用不同。１．容易引发母亲良好的教养方式的积极气质因素,如较高的适应性、积极乐观的心境、较高的注意持久性;２．容易引发母亲不良的教养方式的消极气质因素,如高反应强度、高活动性     

汉语老年读者的多词单元加工：来自眼动研究的证据

选取由两个双字词组成的多词组合（单词组合、模糊词组合、双词组合）,比较老年人和青年人对多词单元的加工情况。结果发现,相比于其他两类组合,所有被试在单词组合上的注视时间更短,第一遍注视次数更少,成分词上的注视时间更短,跳读率更高,表现出多词单元的加工优势,而且这一加工优势不存在显著的年龄差异。结果表明,汉语老年读者同样将多词单元作为整体进行加工。     

Social cognitive correlates of physical activity among single mothers with young children

ObjectivesSingle mothers experience negative health consequences that might be reduced through participation in physical activity, yet little is known about physical activity correlates among this population. This study examined social cognitive theory (SCT) correlates of physical activity among single mothers with young children.DesignCross-sectional.MethodSingle mothers (N = 94) with at least one child less than 5 years old completed SCT questionnaires, wore an accelerometer for one week, and then completed the Godin Leisure Time Exercise questionnaire. Physical activity scores were standardized and averaged to yield a composite physical activity score.ResultsRegression analysis indicated that self-efficacy was a direct predictor of composite physical activity; in the final model planning was the only statistically significant predictor of composite physical activity scores.ConclusionsPlanning and self-efficacy might be important factors to include when designing physical activity interventions for single mothers.     

Working with psychosis: Part 3 – ‘Struggling to contain madness – losing and recovering a capacity to think’

This is the penultimate paper in a series about working with a patient suffering from a psychotic disorder. The paper describes the third year of the work in which ‘John’ had four breakdowns in a period of six months. Much of the time I was unable to think. I was sitting on the edge of my chair either worrying that John was breaking down again or trying to help him recover from a breakdown. My small office became a cramped prison cell in which I felt myself a witness to a disturbing dance into and out of madness. A turning point seemed to happen as I developed a way of thinking about John's breakdowns. I seemed then to become a less persecutory figure in John's mind and more someone to whom John could turn for help. We found a way of thinking and talking about an infant in John. John responded by finding a way of being in my office as though he was reclining in a hammock. His breakdowns ceased. He was able to share in common humanity's concerns following September 11. Finally, I discuss thoughts about containment particularly about the paternal role in containment, drawing on Robert Caper's elaboration of Bion's ideas about containing psychotic aspects of experience.     

ICU成人患者镇痛药物的使用：阿片类及其他

ICU患者经历着各种各样的疼痛,镇痛治疗对于ICU患者至关重要.目前可用于ICU成年患者的镇痛药物很多,主要有阿片类镇痛药、解热镇痛抗炎药和对某些特殊疼痛状态有效的药物.阿片类药物仍是非神经性疼痛的一线用药,使用最多的是阿片受体激动药,包括吗啡、芬太尼、舒芬太尼、瑞芬太尼等,其中舒芬太尼、瑞芬太尼在国内ICU中使用经验不多;阿片受体部分激动药在国内ICU使用很少,包括喷他佐辛、地佐辛等;非甾体类镇痛药在国内ICU使用也很少,包括氟比洛芬酯、帕瑞昔布等.本文旨在简单介绍舒芬太尼、瑞芬太尼、部分阿片受体激动剂及非甾体类镇痛药在ICU的应用.