Contribution of the dorsal subiculum to memory for temporal order and novelty detection using objects,odors, or spatial locations in the rat

The contribution of the dorsal subiculum (DS) to memory for temporal order and novelty detection was assessed using a spontaneous exploration paradigm with objects (visual/tactile stimuli), odors, or spatial locations (Hunsaker, Fieldsted, Rosenberg, & Kesner, 2008). Rats with selective excitotoxic lesions of the DS were compared to sham-operated rats (SHAM) in the two exploration tests. In temporal order tests, two previously explored stimuli were presented and normal rats typically show a preference for exploring the stimulus that was first explored compared to the other stimulus. In novelty detection tests, a familiar and a new stimulus were presented and normal rats typically have a preference for exploring new stimuli. In temporal order tests, results indicated that Group SHAM explored significantly more the first than the last stimulus they met when the stimuli were odors or objects. In addition, SHAM rats predictably displayed a significant preference for the new stimulus in the novelty detection tests with objects, odors, and spatial locations. Group DS did not differ from controls on the temporal order and the novelty detection tests with objects or odors. However, on the novelty detection test with spatial locations, Group DS differed from Group SHAM. These results suggest that the DS is necessary for the memory of spatial locations but not of objects and odors.     

Accuracy and Bias in Perceptions of Spouses' Life‐Sustaining Medical Treatment Preferences1

This research investigated accuracy, projection bias, and base‐rate utilization in spouses' perceptions of end‐stage renal disease patients' preferences for life‐sustaining medical treatment in hypothetical conditions of declining health. Multilevel models revealed that spouses' perceptions were largely biased, determined by their own preferences for the patients' treatment (projection bias) and by typical treatment preferences (base‐rate utilization). Both biases, however, served as indirect routes to a modest degree of accuracy. Moreover, spouses who overestimated patients' preferences for life‐sustaining treatment and who perceived patients' preferences as consistent with their own reported higher levels of marital adjustment than did those who were less biased. Results suggest that spouses' biases in judgments of patients' treatment preferences may promote accuracy and marital adjustment functionally.     

Manual pointing to remembered targets...but also in a remembered visual context

In this paper we investigated whether visual background information available during target presentation influences manual pointing to remembered targets. Younger and older participants manually pointed with their unseen hands to remembered or visible targets that were presented or not over a structured visible background. The results indicated that a structured visual background biased movement planning processes, but did not influence motor control processes, regardless of the fact that target location and the background were visible or remembered. How one uses visual background information for movement planning is not modified by aging.     

Understanding the role of hope in counselling: Exploring the intentional uses of hope

In this paper we look at various conceptual models of hope and research evidence for the integral role that hope plays in counselling. We recognize hope as a dynamic process during which counsellor and client interact in ways that can be mutually influencing and we review research that explores this reciprocal process. A model for the intentional use of hope in counselling that recognizes both implicit and explicit approaches is offered. Metaphors for hope-work that position and re-position both counsellor and client in ways that may foster hope are explored. Finally, we provide suggestions for initiating conversations in which hope can be an explicit therapeutic focus.     

Induction of a transient dysexecutive syndrome in Parkinson's disease using a~subclinical dose of scopolamine

Parkinson's Disease (PD) is often associated with a subcortico-frontal syndrome (SCFS) that is mainly characterized by executive dysfunctions. The complete biochemistry of these dysfunctions remain misunderstood although many studies have suggested a role of the dopaminergic lesions. However, cholinergic lesions in this disease may also account for the SCFS occurrence. The present study has assessed the effects of an acute subclinical dose of scopolamine in normal controls and in PD patients who were devoid of cognitive deficit. Results indicates that PD patients but not normal controls developed a transient SCFS for the duration of the drug action. In contrast to other populations with cholinergic depletions - such as Alzheimer's disease - cholinergic blockage in PD exacerbates specifically the dysexecutive syndrome without inducing amnesia or sedation. Such a discrepancy between these two neuropsychological profiles are discussed in terms of the specificity of the underlying cholinergic lesions.     

"Walking on eggshells": how expressing relationship insecurities perpetuates them

The authors present a model positing that when people are insecure about a relationship partner's acceptance, they often express emotional vulnerabilities to the partner, which causes them to believe the partner views them as highly vulnerable and insecure. In turn, this belief causes them to doubt the authenticity of the partner's expressions of positive regard, which may perpetuate the experience and expression of insecurity that initiated the process. Prototypes of interactions with interpersonally vulnerable individuals included partners' inauthentic expressions of regard (Study 1). Suggesting that these prototypes are applied to personal relationships when vulnerabilities are expressed, those who claimed to have expressed vulnerabilities doubted the partner's authenticity because they believed that they were viewed as vulnerable (Studies 2A, 2B, and 4). Authenticity doubts in turn predicted perceptions of rejection (Studies 3 and 4), which in turn predicted partner derogation and subsequent expressions of vulnerability (Study 4). An experimental manipulation of reflected appraisals of vulnerability increased doubts about the authenticity of a new acquaintance's expressions of emotion (Study 5). Relational insecurity may be perpetuated via the intrapersonal cognitive consequences of expressing it.     

Projection of responsiveness to needs and the construction of satisfying communal relationships

This research tested a social projection model of perceived partner responsiveness to needs. According to this model, people project their own care and supportiveness for a partner onto their perceptions of their partner's caring and supportiveness. In 2 dyadic marriage studies, participants' self-reported responsiveness to the needs of a spouse predicted perceptions of the spouse's responsiveness to the self more strongly than did the spouse's self-reported responsiveness. These projected perceptions of responsiveness, in turn, appeared to promote perceivers' relationship satisfaction. These effects were independent of individual differences in attachment, self-esteem, depression, and communal orientation. A daily-diary component suggested that people projected their own chronic responsiveness as well as their daily enacted support onto perceptions of the specific benefits received from their spouses. A 3rd study found that experimentally manipulated feelings of difficulty in recalling examples of own support provision reduced perceptions of partner responsiveness. Results suggest that projection of own responsiveness is an important determinant of perceived social support and is a means by which caring perceivers maintain satisfying and subjectively communal relationships.     

Cognitive variables related to worry among adolescents: avoidance strategies and faulty beliefs about worry

Studies aiming to better understand worry have neglected children and adolescents. This constitutes an important limitation considering that excessive worry is frequent among adolescents and that patients suffering from excessive worries associate the beginning of their disorder with adolescence. This study evaluates the cognitive variables associated with worry in a sample of 777 adolescents. It attempts to determine whether cognitive avoidance and false beliefs about the usefulness of worries are present and associated with worries in adolescence. The results showed that participants with a high level of worry used more avoidance strategies and held more beliefs about worry. The results also revealed that avoidance of stimuli that trigger unpleasant thoughts and thought substitution were the major avoidance strategies related to worry among adolescents. The belief that worry helps to avoid future negative events was also related to worry. These findings may suggest that adolescents' worries are maintained by processes similar to those observed among adults.     

The effect of Parkinson's disease on the control of multi-segmental coordination

An experiment was designed to test whether or not Parkinson's disease (PD) patients were able to maintain endpoint kinematic patterns in a prehension task involving movement of the torso. Nine PD patients and nine healthy controls were asked to reach for and grasp a full cup of water that was either covered or uncovered and placed beyond the reach of the outstretched arm. An OPTOTRAK (Northern Digital) 3-dimensional motion analysis system was used to capture the movement of four markers placed on the arm, hand, and torso. The results indicated the Parkinson's patients had a decreased ability to maintain the kinematics of the end effector. The PD patients were also found to be impaired in terms of their ability to synchronize the arm, hand, and torso. More specifically, although the elderly controls seemed to employ a strategy of increasing the involvement of the torso when reaching to grasp the uncovered cup, no such strategy was observed in the PD patients. Collectively, the results suggest that the multi-joint synergies observed in the elderly controls, which help preserve relatively consistent endpoint trajectories, are disrupted in Parkinson's patients.