Juggling with bubbles in cylindrical ferrofluid foams

Monodisperse foams in long cylinders exhibit ordered spiral structures. We have made ferrofluid foams of this kind and find that they can be manipulated in a variety of ways by an external magnetic field. Effects include morphological changes, twisting of structures and size control in the bubble formation process. This offers a promising technique for the efficient transport, switching and combining of samples in fluidic networks, possibly on the microfluidic scale.     

When motion improves working memory

ABSTRACT

In the present study, we used a complex span task to explore how memory traces resulting from Self-Performed Task (SPT) and Verbal Task (VT) are maintained in working memory. Participants memorised series of five sentences describing an action either through SPT or VT. Between pairs of sentences, participants performed a concurrent task that varied according to its nature and its cognitive load. The concurrent task was either a verbal task, a low cognitive load motor task or a high cognitive load motor task. A control condition served as a baseline. First, we observed that performance in SPT and VT did not decrease with verbal or motor suppression, but was lower with an increase of the cognitive load. This suggests that memory traces are maintained through attentional refreshing whatever the encoding (SPT or VT). Second, while the enactment effect was replicated in the control condition, it tended to vanish with a verbal concurrent task; moreover, it was reversed with motor concurrent tasks. Surprisingly, the latter effect resulted from an increase of VT memory performance when participants repeated the same gesture between sentences. Finally, our results provide additional evidence that the enactment effect does not rely on attention.     

Organization-, supervisor-, and workgroup-directed commitments and citizenship behaviours: A comparison of models

The purpose of this study was to test two competing theoretical models explaining the relationships between affective commitment to the organization, the supervisor, and the workgroup, and organizational citizenship behaviours (OCB) specifically directed toward these foci. Drawing on cohesion theory, the first model stated that commitment to the organization is a key mediating variable intervening between “local” commitments and OCB (Hunt & Morgan, 1994). Building on Lewin's (1943) field theory and the notion of psychological proximity, the second model proposed that commitment to the most proximal focus should mediate the effect of commitment to more distal entities on OCB. Data drawn from a sample of blue-collar workers and their supervisors in an iron and steel company indicated that the model of a proximal mediation best represented the relationships between commitments and OCB.     

The Relevance of Countertransference

No abstract available for this article.     

Shifting from Treatment Plans to Action Plans: Solidifying the Therapeutic Alliance

This article summarizes the evolution of my theoretical orientation and treatment intervention style over the past thirty-something years. It discusses the pathways taken, influences felt, and experiences that have contributed to my expanding mindset and current therapeutic modus operandi, progressing from past to present. As to what will be in the future, that is difficult to predict as the metamorphosis keeps happening, although some components remain essential ingredients and provide grounding and balance. Que será, será sums up the future succinctly.     

Long Lasting Marriages in Chile

Reports the Chilean segment of a multicultural, multicountry (Canada, Germany, Israel, Netherlands, South Africa, Sweden, USA) study on long-term marriages. This pilot study is seen as a starting point in research focusing on the childhood background and family history of long-term marital partners in Chile. No statistically significant association between marital satisfaction and economic or educational level was found. A positive correlation was found between marital satisfaction and happiness during childhood. Love, trust, and loyalty appear to be the main ingredients of satisfaction for both satisfied and unsatisfied couples. The findings across countries as to the essential ingredients reported here have been remarkably similar.     

Expectations and high school change: Teacher-researcher collaboration to prevent school failure

Describes the multilevel outcomes of a collaborative preventive intervention for ninth-graders at risk for school failure using qualitative and quasi-experimental methods. Teachers, administrators, and researchers implemented innovative practices communicating positive expectations for low-achieving adolescents in their transition to high school. Changes were made in the practices of curriculum, grouping, evaluation, motivation, student responsibility, and relationships (in the classroom, with parents, and in the school). Both implementation and evaluation evolved as a function of collaboration. Change was promising but not uniform. Project teachers became more positive about students and colleagues, expanded their roles, and changed school tracking policies. The 158 project students, in contrast to the 154 comparison students showed improved grades and disciplinary referrals post-intervention and increased retention in school 1 year later, but their absences rose and improved performance was not maintained. The implications of this analysis for school-based interventions and its evaluation are discussed.     

Enter the prenuptial: A prelude to marriage or remarriage

Although prenuptial agreements have existed in the United States for many decades, they did not catapult into the public foreground during the courtship/engagement/just before marriage or remarriage stage of the life cycle until the 1980s. In the past decade, this particular kind of document has received a great deal of attention in the media, in lawyers' offices, and in courtrooms. This article explores the raison d'ěre of antenuptials and their psychological, familial, and legal ramifications. Some guidelines are offered to defuse the high anxiety they arouse in some individuals as well as to provide signals as to when the contents of the prenuptial herald “danger” ahead. The potential positive aspects of both psychosocial prenuptial accords and legal prenuptial agreements are explored as is the role of the psychologist as therapist or “mediator” when a prenuptial is in the offing.     

Treating holocaust survivors

Contemporary Family Therapy - There has been a substantial body of literature on the political, economic and emotional legacy of the holocaust on the victims who survived and their families. It has...