Gasoline conservation: a procedure for measuring and reducing the driving of college students

The study sought to motivate college students to reduce the number of miles they drove each day and thus save gasoline. Students in two psychology classes were divided by class into two groups. The experimental group was offered various combinations of prizes such as cash, a tour of a mental-health facility, car servicing, and a university parking sticker for reducing driving. The value of the prize received was scaled in terms of per cent reduction in driving. The contrast group received no inducements. The condition in which the experimental group's mileage reduction was reinforced was counterbalanced by two baseline conditions. Several special recording procedures were used to reduce and detect the possibility of subjects altering their odometers, the source of the driving data. Experimental subjects reduced their average daily mileage by 20% relative to the initial baseline; the contrast group did not change. During the one-month reinforcement condition, the 12 experimental subjects saved some 170 gallons (worth $102) of gasoline.     

The California drought: A quasi-experimental analysis of social policy

The effect of fines for failure to conserve water during the California drought of 1976 to 1978 was evaluated in a retrospectively arranged multiple-baseline design across three San Francisco Bay area cities. The data indicated that, on a community level, significant savings of water occurred regardless of whether fines were introduced or not. However, on an individual level, fines appeared to have an effect on private, as opposed to commercial or industrial, consumers who had received at least one fine. The limitations imposed on these conclusions by the quasi-experimental nature of the design were highlighted. Possible reasons for water conservation in the absence of fines were discussed within the framework of stimulus control. It was suggested that an area for future research should be the delineation of stimulus parameters involved in producing behavior change in entire communities.     

Piagetian conservation of discrete quantities in bonobos (Pan paniscus), chimpanzees (Pan troglodytes), and orangutans (Pongo pygmaeus)

This study investigated whether physical discreteness helps apes to understand the concept of Piagetian conservation (i.e. the invariance of quantities). Subjects were four bonobos, three chimpanzees, and five orangutans. Apes were tested on their ability to conserve discrete/continuous quantities in an over-conservation procedure in which two unequal quantities of edible rewards underwent various transformations in front of subjects. Subjects were examined to determine whether they could track the larger quantity of reward after the transformation. Comparison between the two types of conservation revealed that tests with bonobos supported the discreteness hypothesis. Bonobos, but neither chimpanzees nor orangutans, performed significantly better with discrete quantities than with continuous ones. The results suggest that at least bonobos could benefit from the discreteness of stimuli in their acquisition of conservation skills.     

The dynamic self

The paper describes various aspects of the dynamic energy of the self, as experienced personally and in clinical work. It discusses the inherent and archetypal force there is in the self, expressed in several ways, for example in some poetry, and in spirituality. The dynamic power of the self is shown at work in the process of individuation, including its vicissitudes of pain and working through doubts, envies and other shadow factors.     

Shifting the focus from what to why

After 4 decades of research on infant behavior and development, the time has come to shift our focus from What infants do to Why they do it when they do—to move beyond the single-minded search for mechanism and to consider the larger question of function. Infants are not merely incomplete adults who simply get better with age, but they are different organisms altogether, perfectly adapted at every point in ontogeny. For this reason, answers to the Why question will necessarily build upon an evolutionary framework that reflects the infant's changing “occupations” or ecological niches. Through this pursuit, infancy researchers will develop a more integrative science and a greater sense of community.     

Effects of television modeling on residential energy conservation

A combination of social marketing, communications, social learning (particularly modeling), and behavior analysis may provide an effective framework for behavior change via films and television. We used this approach in developing special television programs about residential energy conservation. The programs were tailored and directed to preselected middle-class homeowners (N = 150), and delivered over a public access channel of a cable TV system. The results indicated that after one program exposure (about 20 minutes), viewers adopted simple strategies modeled in the programs which led to savings of approximately 10% on their home energy use for a substantial part of the cooling and heating season. Although the potential benefits to costs of large-scale media efforts seemed great, institutional barriers for such programs were identified. Less expensive, more local programs seem more viable.     

Mechanical knowledge does matter to tool use even when assessed with a non-production task: Evidence from left brain-damaged patients

In the literature on apraxia of tool use, it is now accepted that using familiar tools requires semantic and mechanical knowledge. However, mechanical knowledge is nearly always assessed with production tasks, so one may assume that mechanical knowledge and familiar tool use are associated only because of their common motor mechanisms. This notion may be challenged by demonstrating that familiar tool use depends on an alternative tool selection task assessing mechanical knowledge, where alternative uses of tools are assumed according to their physical properties but where actual use of tools is not needed. We tested 21 left brain-damaged patients and 21 matched controls with familiar tool use tasks (pantomime and single tool use), semantic tasks and an alternative tool selection task. The alternative tool selection task accounted for a large amount of variance in the single tool use task and was the best predictor among all the semantic tasks. Concerning the pantomime of tool use task, group and individual results suggested that the integrity of the semantic system and preserved mechanical knowledge are neither necessary nor sufficient to produce pantomimes. These results corroborate the idea that mechanical knowledge is essential when we use tools, even when tasks assessing mechanical knowledge do not require the production of any motor action. Our results also confirm the value of pantomime of tool use, which can be considered as a complex activity involving several cognitive abilities (e.g., communicative skills) rather than the activation of gesture engrams.     

A practitioner's notes on the free-associative method as existential praxis

Freud's pre-1914 texts demonstrate why he consistently asserted that his free-associative method was the sine qua non of his discipline. Prior to 1914, Freud's theorizing was intimately and inextricably connected to his lived experience with the discovery of this method. After 1914, he became more speculative in this thinking and writing; his models of the “mental apparatus” and its functioning drew increasingly on conceptual sources other than his experience with free association. The four fundamental coordinates of his discipline (the methodical disclosure that self-consciousness is repressive, the nonlinear “time of the mind,” the significance of our sensual embodiment or libidinality, and the formation of the repression barrier by the incest taboo) are all closely tied to free-associative experience. By contrast, post-1914 theoretical preoccupations (from object relations to the structural-functional model, and other formulations generated after Freud's life) are comparatively divorced from such experience. These conceptual edifices imply a conventional depiction of the theory–practice relationship, which is radically challenged by free-associative discourse. The notion of praxis is introduced as contesting the prevailing depiction of practice as an application of theory, and as serving to rescue psychoanalysis from the somewhat “sterile debates” over its scientific status and over the relevance of metapsychological speculation to clinical treatment. Against the normative ideology of theory and practice, the lived experience of free-associative discourse, with its potential for change and healing, can only be understood in terms of this notion of praxis, and this justifies Freud's claim to have initiated “a critical new direction in science.”     

ICU患者呼吸道念珠菌是否需要去定植

ICU机械通气患者肺部念珠菌定植较为常见。研究显示呼吸道念珠菌定植可促进机械通气患者呼吸机相关性肺炎（VAP）进展,是VAP患者死亡和多重耐药菌（MDR）产生的独立预测因素,对念珠菌呼吸道定植的VAP患者经验性采用抗真菌治疗可产生有益作用。本文就呼吸道念珠菌是否需要去定植这一热点话题做一聚焦以供临床参考。     

时间知觉的脑机制:时钟模型的困境和新导向

长期以来人们认为神经系统是通过类似于时钟的方式来实现对一段时间的知觉的,并认为多巴胺能系统(基地神经节)和时钟的快慢有关。与多巴胺信号有关的药物的动物实验的结果以及帕金森氏症(parkinson’s disease)患者的行为表现被看作是支持以上看法的证据。然而,最近的大量研究对这个理论提出了挑战,结合行为研究和脑机制研究的新成果,研究者提出了知觉信息可以通过神经活动状态或加工中的能量消耗来表达。