Working memory capacity modulates task performance but has little influence on task choice

Variation in the ability to maintain internal goals while resolving competition from multiple information streams has been related to individual differences in working memory capacity (WMC). In a multitask environment, task choice and task performance are influenced by internal goals, prior behavior within the environment, and the availability of relevant and irrelevant information in the environment. Using the voluntary task-switching procedure, task performance, as measured by switch costs, was related to WMC, but only at short preparation intervals. Task choice processes were only weakly related to WMC. These findings are consistent with models of cognitive control that separate task choice processes from the processes of activating and maintaining task readiness. WMC is related to regulation of specific task parameters but not to choice processes integral to the coordination of multiple sources of information.     

Depleted parental psychological resources as mediators of the association of income with adherence and metabolic control

For adolescents with Type 1 diabetes, lower family income may be associated with poorer diabetes management through depleted parental psychological resources (i.e., higher parental depressive symptoms, lower parental acceptance). Adolescents (N = 252; 46% male) aged 10-14 years with Type 1 diabetes assessed the acceptance of their mother and father (e.g., "gives me the feeling that she likes me as I am"; "she doesn't feel she has to make me over into someone else"). Mothers provided information on family income and demographics. Both mothers and fathers reported their depressive symptoms. HbA1c scores were indexed via medical records. Lower family income was associated with higher (i.e., worse) HbA1c, more mother and father depressive symptoms, and less acceptance from both parents. Mediation analyses revealed that the relationship of lower family income with metabolic control occurred indirectly through lower maternal and paternal acceptance and lower adherence. Lower family income may impair the quality of parent--adolescent relationships that are beneficial for good diabetes management.     

Side of onset in Parkinson's disease and alterations in religiosity: novel behavioral phenotypes

Behavioral neurologists have long been interested in changes in religiosity following circumscribed brain lesions. Advances in neuroimaging and cognitive experimental techniques have been added to these classical lesion-correlational approaches in attempt to understand changes in religiosity due to brain damage. In this paper we assess processing dynamics of religious cognition in patients with Parkinson's disease (PD). We administered a four-condition story-based priming procedure, and then covertly probed for changes in religious belief. Story-based priming emphasized mortality salience, religious ritual, and beauty in nature (Aesthetic). In neurologically intact controls, religious belief-scores significantly increased following the Aesthetic prime condition. When comparing effects of right (RO) versus left onset (LO) in PD patients, a double-dissociation in religious belief-scores emerged based on prime condition. RO patients exhibited a significant increase in belief following the Aesthetic prime condition and LO patients significantly increased belief in the religious ritual prime condition. Results covaried with executive function measures. This suggests lateral cerebral specialization for ritual-based (left frontal) versus aesthetic-based (right frontal) religious cognition. Patient-centered individualized treatment plans should take religiosity into consideration as a complex disease-associated phenomenon connected to other clinical variables and health outcomes.     

NGRI Revisited: Venirepersons' Attitudes Toward the Insanity Defense1

Three hundred venirepersons from the 12^th Judicial Circuit in Sarasota, Florida completed the following booklet of stimulus materials: one question measuring participants' level of support for insanity defense; a 16‐item measure assessing participants' attitudes toward the myths associated with the insanity defense, the legal definitions of insanity, and mental illness; a case scenario; verdict preference; and standard demographic questions. Level of support for the insanity defense was significantly related to participants' attitudes toward legal standards of insanity, mental illness, and the myths associated with the insanity defense. In addition, results indicated that level of support for the insanity defense, age, educational level, occupation, type of prior jury service, and political views were significantly related to verdict preference. Notably, three factors that have been found to impact verdict preference in previous research failed to do so in the current study: participants' experience with psychological disorders; participants' exposure to psychotropic medications; and participants' experience with psychologists or psychiatrists. The findings both replicate and extend earlier findings by suggesting that attitudes toward the insanity defense are more complex than previously imagined.     

Implicit memory and consumer choice: the mediating role of brand familiarity

Two experiments investigated the influence of implicit memory on consumer choice for brands with varying levels of familiarity. Priming was measured using a consideration‐choice task, developed by Coates, Butler and Berry ( 2004 ). Experiment 1 employed a coupon‐rating task at encoding that required participants to meaningfully process individual brand names, to assess whether priming could affect participants' final (preferred) choices for familiar brands. Experiment 2 used this same method to assess the impact of implicit memory on consideration and choice for unknown and leader brands, presented in conjunction with familiar competitors. Significant priming was obtained in both experiments, and was shown to directly influence final choice in the case of familiar and highly familiar leader brands. Moreover, it was shown that a single prior exposure could lead participants to consider buying an unknown, and indeed fictitious, brand. Copyright © 2006 John Wiley & Sons, Ltd.     

A Kuhnian critique of Hume on miracles

In Part I of “Of Miracles,” Hume argues that belief in miracle-testimony is never justified. While Hume’s argument has been widely criticized and defended along a number of different veins, including its import on scientific inquiry, this paper takes a novel approach by comparing Hume’s argument with Thomas Kuhn’s account of scientific anomalies. This paper makes two arguments: first that certain types of scientific anomalies—those that conflict with the corresponding paradigm theory—are analogous to miracles in the relevant ways. Note, importantly, that the argument applies only to the first definition of ‘miracle’ that Hume offers (i.e. ‘miracle’ as a “violation of the laws of nature.”) Second, it argues that we are sometimes rationally justified in believing testimony for scientific anomalies (that conflict with the corresponding paradigm theory), because there have been several cases of scientists accepting such anomalies and—assuming certain criteria are met—we are rationally justified in believing these scientists. If both arguments are successful, then it is possible to be rationally justified in believing miracle-testimony, though the extent of justification depends on various criteria and comes in degrees. After examining a few objections, the paper concludes by contextualizing this argument in relation to Part II of Hume’s essay and in relation to broader apologetic concerns. In short, it is vital to recognize that this paper’s focus is Hume’s first account of ‘miracle,’ rather than his argument against miracle-testimony more broadly, but the argument could be coupled with other arguments against Hume’s broader attack on miracle-testimony.

     

The approach–avoidance dilemma at the heart of group-based support: Evidence that group identification increases willingness to seek support at the same time that identity-based support threat reduces it

Despite the benefits of shared group membership, group members often experience an approach–avoidance dilemma when seeking support. At the same time that group members’ willingness to seek support is increased by the positive implications of group identification (the approach hypothesis), it is reduced by negative implications, including the capacity for support to threaten their standing in the group (the avoidance hypothesis). As this dilemma predicts, we find evidence that as participants’ group identification increases, their willingness to seek support increases, but that this willingness is simultaneously reduced by increased identity-based support threat (Study 1, N = 125; Study 2, N = 161). Furthermore, manipulated support threat decreases willingness to seek support. In a team-based game (Study 3, N = 117), support threat is reduced when group norms encourage support-seeking, leading to increases in support-seeking behavior through increases in willingness to seek support, as predicted by the avoidance-reduction hypothesis. Implications for strategies to promote effective social support in intragroup contexts are discussed.     

‘It’s the unknown’ – understanding anxiety: from the perspective of people with multiple sclerosis

Objective: A qualitative study of PwMS who had clinically significant levels of anxiety was conducted to gain a richer perspective on their experience. The objective was to explore PwMS’ experiences of anxiety and their perspectives on causes and outcomes. Design: Twenty in-depth, semi-structured interviews were conducted with PwMS consecutively recruited from the Neurology Department of a NHS University Hospital. Sixteen had a relapsing-remitting course, three had a secondary progressive course and one person had primary progressive multiple sclerosis (MS). Interviews were recorded, transcribed and analysed using inductive thematic analysis. Results: Although participants thought different factors had initially triggered their anxiety, being given the diagnosis of MS appeared to be the most significant factor for many participants. Difficulties in the workplace and in relationships, particularly related to perceived dependence on others were also important themes. A wide range of emotional responses and negative thinking patterns were associated with anxiety; this suggested the presence of comorbid depression. Participants were able to acknowledge the positive and negative coping strategies that impacted on their anxiety. Conclusion: This review confirms that anxiety can have many negative implications for PwMS and suggests that early detection and intervention are necessary in order to improve patient’s well-being.