Trunk coordination in healthy and chronic nonspecific low back pain subjects during repetitive flexion–extension tasks: Effects of movement asymmetry,velocity and load

Multiple joint interactions are critical to produce stable coordinated movements and can be influenced by low back pain and task conditions. Inter-segmental coordination pattern and variability were assessed in subjects with and without chronic nonspecific low back pain (CNSLBP). Kinematic data were collected from 22 CNSLBP and 22 healthy volunteers during repeated trunk flexion–extension in various conditions of symmetry, velocity, and loading; each at two levels. Sagittal plane angular data were time normalized and used to calculate continuous relative phase for each data point. Mean absolute relative phase (MARP) and deviation phase (DP) were derived to quantify lumbar–pelvis and pelvis–thigh coordination patterns and variability. Statistical analysis revealed more in-phase coordination pattern in CNSLBP (p = 0.005). There was less adaptation in the DP for the CNSLBP group, as shown by interactions of Group by Load (p = .008) and Group by Symmetry by Velocity (p = .03) for the DP of pelvis–thigh and lumbar–pelvis couplings, respectively. Asymmetric (p < 0.001) and loaded (p = 0.04) conditions caused less in-phase coordination. Coordination variability was higher during asymmetric and low velocity conditions (p < 0.001). In conclusion, coordination pattern and variability could be influenced by trunk flexion–extension conditions. CNSLBP subjects demonstrated less adaptability of movement pattern to the demands of the flexion–extension task.     

Fetal Risks,Relative Risks,and Relatives' Risks

Several factors related to fetal risk render it more or less acceptable in justifying constraints on the behavior of pregnant women. Risk is an unavoidable part of pregnancy and childbirth, one that women must balance against other vital personal and family interests. Two particular issues relate to the fairness of claims that pregnant women are never entitled to put their fetuses at risk: relative risks and relatives' risks. The former have been used—often spuriously—to advance arguments against activities, such as home birth, that may incur risk; the latter implicate the nature of relationships in determining the acceptability of coercing or precluding activities. Motivated reasoning by clinicians and judges leads to inaccurate risk assessments, and judgments based on false claims to objectivity. Such judgments undermine the moral and legal standing of pregnant women and do not advance the interests of fetuses, pregnant women, families, or states.     

Cognitive empathy modulates the visual perception of human-like body postures without imitation

To examine the mechanism of visual perception of human-like body postures, we conducted a posture recognition task, a questionnaire survey, and the Interpersonal Reactivity Index (IRI). The majority of participants perceived the pseudo-posture as a human posture in the early stage (78%), but only approximately half of them reported the imagination of bodily movement (66%). These results suggest that the majority of observers perceive pseudo-postures as human postures in the early stage of perception, but this human posture perception does not necessarily lead to the visualisation of bodily movement. In a group of who received the pseudo posture as a human-posture regardless of the perception stages, the participants who imagined bodily movement (64%) showed significantly higher scores than those who did not on the Fantasy subscale of the IRI. Highly empathic participants are more likely to detect a kinematic relation between the pseudo-postures.     

Linked proximal and distal changes in the reaching behavior of 5- to 12-month-old human infants grasping objects of different sizes

This study evaluates age-related proximal and distal changes in reaching organization for objects of different sizes. To this end, eight objects ranging from 2 to 9 cm diam. were presented to 23 infants ages 5 to 12 months. Proximal control was determined by the relative frequencies of bimanual reaching for large and small objects. Distal control was assessed by hand opening and orientation with respect to an object, and by the proportion of the object being included within hand opening at touch. Five-month-old infants tended to reach bimanually regardless of object size. Starting at 7 to 8 months, infants tended to reach for large objects bimanually more often than for small ones. Only at 11 to 12 months did reaching closely reflect the object’s diameter. The frequency of thumb-index finger angle opening during the approach phase also increased after 7 to 8 months of age, as well as the adjustment of the angle to the object diameter and the proportion of the object within hand opening at touch. Proximal and distal changes appeared coupled at 5 to 6 months, when the few subjects showing evidence of some proximal adjustments to object size were also those who exhibited some distal adjustments. After they started to appear, however, proximal and distal adjustments seemed to be independent, as revealed by the lack of correlation of proximal and distal changes between 7 and 12 months.     

On the Future of Group Therapy Theory

The author presents a hypothetical view of group therapy theories as they may evolve over the first decades of the New Milennium. Looking at the problem of prediction from the standpoint of postmodernism and social constructivism, the importance of these perspectives as frameworks of the social sciences is emphasized. The influence of general systems theory, Foulkesian group analysis, object relations theory, self psychology, cognitive-behavioral psychology, and neuropsychiatry are briefly examined with respect to the expected evolution of increasingly sophisticated, detailed, and nuanced theories of group psychology and group psychotherapy.     

Object elicitation: A compassionate and culturally informed method for psychotherapy research

This study provides an innovative, compassionate and culturally informed method for psychotherapy research, using object elicitation with 13 participants from vulnerable groups. It examines the positive impact it has on building the research alliance, enhanced depth of sharing within qualitative research interviews and emic ways of knowing through the engagement with a culturally relevant, tangible, internalised or transitional object brought by vulnerable participants from diverse cultural contexts of origin. Results showcase how a creative and compassionate research method can promote a culturally informed research alliance with vulnerable participants, helping to build trust, rapport and relational depth; encourage elicitation of experiences; and empower emic and subjugated voices. The implications of this study make the case for the inclusion of object elicitation as a creative and compassionate method in qualitative research with traumatised and vulnerable individuals, which should be used as part of a culturally informed approach to psychotherapy research.     

On the Psychological Function of Nationalistic “Whitelash”

A noticeable feature of the political discourse accompanying the rise of nationalism in white‐majority countries is that white people fare worse than other ethnic groups in their societies. However, it is unclear based on the extant literature why group‐based relative deprivation (GRD) would correlate with majority‐group nationalism. Here, we propose that the psychological function of nationalism for majority‐group members lies in its ability to assuage the negative feelings arising from GRD. Accordingly, in a New Zealand national probability sample (N = 15,607), we found that GRD among whites was negatively associated with well‐being. However, we also found an opposing indirect association mediated by nationalism. GRD was associated with higher nationalism, which was in turn associated with higher well‐being. These findings suggest that endorsing beliefs about national superiority is one way a nation’s dominant ethnic group can cope with the negative psychological consequences of perceiving that their group is deprived.     

精神分析客体关系革命的折衷进路:英国独立学派评述

自精神分析学诞生以来,其发展进路经历了自我革命、客体关系革命、自体革命、关系革命和神经科学革命。英国独立学派是客体关系革命的主要发起者和中间力量,它诞生于20世纪40年代英国精神分析学会内部的“论战”,并在规模以及精神分析理论和技术方面都取得重大发展。独立学派的精神分析师以开放和折衷的态度批判性地汲取各种现存的精神分析观点,形成不同于克莱因学派的客体关系思想,并表现出独立性、开放性、关系性和真实性的内涵与特征。温尼科特、费尔贝恩和巴林特是独立学派的主要代表人物,他们各自建构出独特的客体关系理论,促使精神分析范式从一元驱力模式转向二元客体关系模式,推动了客体关系理论的深入发展,奠定了后续精神分析发展的基石。     

Interactions of reading and semantics along the ventral visual processing stream

Converging evidence supports a distributed-plus-hub view of semantic processing, in which there are distributed modular semantic sub-systems (e.g., for shape, colour, and action) connected to an amodal semantic hub. Furthermore, object semantic processing of colour and shape, and lexical reading and identification, are processed mainly along the ventral stream, while action semantic processing occurs mainly along the dorsal stream. In Experiment 1, participants read a prime word that required imagining either the object or action referent, and then named a lexical word target. In Experiments 2 and 3, participants performed a lexical decision task (LDT) with the same targets as in Experiment 1, in the presence of foils that were legal nonwords (NW; Experiment 2) or pseudohomophones (PH; Experiment 3). Semantic priming was similar in effect size regardless of prime type for naming, but was greater for object primes than action primes for the LDT with PH foils, suggesting a shared-stream advantage when the task demands focus on orthographic lexical processing. These experiments extend the distributed-plus-hub model, and provide a novel paradigm for further research.