Preference Structures and Co-comparability Graphs

Order structures such as linear orders, weak orders, semiorders and interval orders are often considered as models of a decision maker's preferences. In this paper we introduce and study new order structures characterized by their symmetric part belonging to certain classes of co-comparability graphs. We outline possible interpretations and suggest special representations of these structures and we point out their potential use for approximating relations obtained through a multicriteria aggregation procedure. We provide various characterizations of the new structures (as well as of older ones) in terms of minimal forbidden configurations and by algebraic conditions.     

Repeated checking really does cause memory distrust

Memory phenomena associated with obsessive-compulsive disorder (OCD) have received increased attention in the recent literature. Some debate remains about whether OCD is characterized by deficits in memory per se, or by poor memory confidence. Following from a recent study that demonstrated memory distrust results from repeated checking of a virtual computerized stove, we asked 50 undergraduate students to repeatedly turn on, turn off and check either a real kitchen stove (relevant checking) or a real kitchen faucet (irrelevant checking) in a standardized, ritualized manner. All participants completed a final check of the stove following these 19 checking trials. Results indicated that following repeated relevant checking, participants reported significantly reduced memory confidence, vividness and detail. Repeated irrelevant checking did not produce these decreases. Results are discussed in terms of cognitive-behavioural formulations of OCD and in terms of the effects of repetition on memory and metamemory.     

Excessive Reassurance Seeking, Hassles, and Depressive Symptoms in Children of Affectively Ill Parents: A Multiwave Longitudinal Study

The current study examined whether excessive reassurance seeking serves as a vulnerability factor to depression in a sample of high-risk youth using a multiwave longitudinal design. At Time 1, 140 children (aged 6-14) of affectively disordered parents completed measures assessing reassurance seeking and depressive symptoms. In addition, every 6 weeks during the following year, children and parents completed measures assessing depressive symptoms and the occurrence of hassles. In line with hypotheses, the results of contemporaneous analyses indicated that children with high levels of reassurance seeking reported greater elevations in depressive symptoms following elevations in either hassles or parental depressive symptoms than children with low levels. At the same time, the results of time-lagged analyses indicated that both these relationships were moderated by age with excessive reassurance seeking being associated with greater elevations in depressive symptoms following elevations in either hassles or parental depressive symptoms in older but not younger children.     

The role of self-criticism, dependency, and hassles in the course of depressive illness: a multiwave longitudinal study

The current study utilized a multiwave longitudinal design to examine whether dependency and/or self-criticism influence the course of depressive symptoms in a community sample of adults with a history of major depression. In addition, the authors examined whether self-esteem serves as a buffer against the development of depressive symptoms following increases in hassles in individuals possessing such traits. At Time 1, 102 participants completed measures assessing depressive symptoms, self-criticism, dependency, and self-esteem. Every 6 weeks for the next year, participants completed measures assessing depressive symptoms and hassles. High self-criticism was associated with greater elevations in depressive symptoms following elevations in hassles in low but not high-self-esteem individuals. Results with respect to dependency, however, were contrary to hypotheses. High dependency was associated with elevations in depressive symptoms following elevations in hassles in high-self-esteem individuals. In contrast, high dependency was associated with chronically elevated depressive symptoms in low-self-esteem individuals.     

Restraint and Cancellation: Multiple Inhibition Deficits in Attention Deficit Hyperactivity Disorder

We used variations of the stop signal task to study two components of motor response inhibition—the ability to withhold a strong response tendency (restraint) and the ability to cancel an ongoing action (cancellation)—in children with a diagnosis of attention deficit hyperactivity disorder (ADHD) and in non-ADHD controls of similar age (ages 7–14 years). The goal was to determine if restraint and cancellation were related and if both were deficient in ADHD. The stop signal task involved a choice reaction time task (go task) which required a rapid response. The demand for inhibitory control was invoked through the presentation of a stop signal on a subset of go trials which required that the ongoing response be suspended. The stop signal was presented either concurrently with the go signal (restraint version) or after a variable delay (cancellation version). In Study 1, we compared ADHD and control children on the cancellation version of the stop task; in Study 2, we compared ADHD and controls on the restraint version. In Study 3, a subset of ADHD and control participants completed both tasks so that we could examine convergence of these dimensions of inhibition. Compared to control participants, ADHD participants showed a deficit both in the ability to cancel and to restrain a speeded motor response. Performance on the restraint version was significantly correlated with performance on the cancellation version in controls, but not in ADHD participants. We conclude that ADHD is associated with deficits in both restraint and cancellation subcomponents of inhibition.     

La Diversité Montréalaise à l’Épreuve de la Ségrégation : Pluralisme et Insertion Résidentielle des Immigrants

Residential segregation is becoming a complex phenomenon in a great number of cities, in which case, it becomes important to use methodological approaches that allow us to take this complexity into account. This article presents a case study of the Montreal situation using a method describing segregation along five dimensions identified by Massey and Denton (Social Forces 67:281–315, 1988): equality, concentration, aggregation, exposition and centralisation, as well as a set of fifteen segregation indices, and seven variables describing the immigrant population. Results indicate that Montreal, in 2001, appeared as a multicultural city characterized by a plurality of immigration patterns of urban insertion.     

Intentional action arises from early reciprocal exchanges

Intentionality is defined as the cognitive ability to represent goals beyond the here and now of perception. First signs of intentionality appear by the second month after birth. A major mechanism responsible for such development might be the unique reciprocal and intentional ways humans communicate with each other, particularly their young progenies. I argue that starting in the second month, reciprocal exchanges, affective mirroring, and mutual imitations with others provide infants with the unique opportunity to differentiate as well as to compare and conjugate first (self) and third (others') person perspectives. This ability is a prerequisite not only for referential communication but also of intentionality. It corresponds to the emergence of a new contemplative and "meta" stance toward the world. An argument is made that the developmental origins of this stance are primarily social, not to be found in the individual infant interacting solely with physical objects.     

From strengths use to work performance: The role of harmonious passion,subjective vitality,and concentration

Research has shown that strengths use and development can foster individual performance and well-being at work. However, to date little is known about the underlying psychological processes that might be operating in this relation. The purpose of this study was first to confirm the strengths use to work performance association and, second, to assess theoretical models of strengths use by testing a path model from strengths use to work performance, through harmonious passion, subjective vitality, and concentration. This study was conducted on a sample of 404 French-speaking Canadian workers and structural equation modeling analyses were performed in order to test the proposed model. Results show an association between strengths use and work performance. Further, this relation is completely mediated by the proposed variables. Theoretical and applied implications are discussed.     

Longitudinal Effects of OCB on Cadre Selection and Pursuing a Career as Militia Cadre in the Swiss Armed Forces

In the present investigation longitudinal data obtained from recruits undergoing basic military training in the Swiss Armed Forces were used to examine the effects of organizational citizenship behavior (OCB) on a subsequent cadre selection and the willingness to voluntarily pursue a career as militia cadre. Results of the hierarchical logistic regression controlling for demographic variables, cadre recommendation, and allocation to the desired branch of service showed OCB predicted both the selection as cadre and the voluntariness to pursue a career as militia cadre. These effects show to what extent OCB may predict significant additional effort. Results are discussed with regard to further examination of the effects of OCB on career outcomes and selection decisions.