Dopamine is critically important in the neural manifestation of motivated behavior, and alterations in the human dopaminergic system have been implicated in the etiology of motivation-related psychiatric disorders, most prominently addiction. Patients with chronic addiction exhibit reduced dopamine D2 receptor (DRD2) availability in the striatum, and the DRD2 TaqIA (rs1800497) and C957T (rs6277) genetic polymorphisms have previously been linked to individual differences in striatal dopamine metabolism and clinical risk for alcohol and nicotine dependence. Here, we investigated the hypothesis that the (...) variants of these polymorphisms would show increased reward-related memory formation, which has previously been shown to jointly engage the mesolimbic dopaminergic system and the hippocampus, as a potential intermediate phenotype for addiction memory. To this end, we performed functional magnetic resonance imaging (fMRI) in 62 young, healthy individuals genotyped for DRD2 TaqIA and C957T variants. Participants performed an incentive delay task, followed by a recognition memory task 24 h later. We observed effects of both genotypes on the overall recognition performance with carriers of low-expressing variants, namely TaqIA A1 carriers and C957T C homozygotes, showing better performance than the other genotype groups. In addition to the better memory performance, C957T C homozygotes also exhibited a response bias for cues predicting monetary reward. At the neural level, the C957T polymorphism was associated with a genotype-related modulation of right hippocampal and striatal fMRI responses predictive of subsequent recognition confidence for reward-predicting items. Our results indicate that genetic variations associated with DRD2 expression affect explicit memory, specifically for rewarded stimuli. We suggest that the relatively better memory for rewarded stimuli in carriers of low-expressing DRD2 variants may reflect an intermediate phenotype of addiction memory. (shrink)

In the past decades, reductionism has dominated both research directions and funding policies in clinical psychology and psychiatry. The intense search for the biological basis of mental disorders, however, has not resulted in conclusive reductionist explanations of psychopathology. Recently, network models have been proposed as an alternative framework for the analysis of mental disorders, in which mental disorders arise from the causal interplay between symptoms. In this target article, we show that this conceptualization can help explain why reductionist approaches in (...) psychiatry and clinical psychology are on the wrong track. First, symptom networks preclude the identification of a common cause of symptomatology with a neurobiological condition; in symptom networks, there is no such common cause. Second, symptom network relations depend on the content of mental states and, as such, feature intentionality. Third, the strength of network relations is highly likely to depend partially on cultural and historical contexts as well as external mechanisms in the environment. Taken together, these properties suggest that, if mental disorders are indeed networks of causally related symptoms, reductionist accounts cannot achieve the level of success associated with reductionist disease models in modern medicine. As an alternative strategy, we propose to interpret network structures in terms of D. C. Dennett's (1987) notion ofreal patterns, and suggest that, instead of being reducible to a biological basis, mental disorders feature biological and psychological factors that are deeply intertwined in feedback loops. This suggests that neither psychological nor biological levels can claim causal or explanatory priority, and that a holistic research strategy is necessary for progress in the study of mental disorders. (shrink)

Concerns about exploiting the poor or economically disadvantaged in clinical research are widespread in the bioethics community. For some, any research that involves economically disadvantaged individuals is de facto ethically problematic. The economically disadvantaged are thought of as “venerable” to exploitation, impaired decision making, or both, thus requiring either special protections or complete exclusion from research. A closer examination of the worries about vulnerabilities among the economically disadvantaged reveals that some of these worries are empirically or logically untenable, while others (...) can be better resolved by improved study designs than by blanket exclusion of poorer individuals from research participation. The scientific objective to generate generalisable results and the ethical objective to fairly distribute both the risks and benefits of research oblige researchers not to unnecessarily bar economically disadvantaged subjects from clinical research participation. (shrink)

I explore gender messages in Boy Scout and Girl Scout handbooks through an analysis of how gender is infused in the context and content of Scout activities as well as in instructions about how the Scouts are to approach these activities. I find that girls are offered more activities intended to be performed in group contexts than are boys. Boys are offered proportionately more activities with scientific content and proportionately fewer artistic activities than are girls. The girls’ handbook conveys messages (...) about approaching activities with autonomous and critical thinking, whereas the boys’ handbook facilitates intellectual passivity through a reliance on organizational scripts. Taken together, girls’ messages promote an “up-to-date traditional woman” consistent with the Girl Scouts’ organizational roots; boys’ messages promote an assertive heteronormative masculinity that is offset by facilitating boys’ intellectual passivity. (shrink)

Since the Supreme Court upheld the partial birth abortion ban in 2007, more U.S. abortion providers have begun performing intraamniotic digoxin injections prior to uterine dilation and evacuations. These injections can cause medical harm to abortion patients. Our objective is to perform an in-depth bioethical analysis of this procedure, which is performed mainly for the provider’s legal benefit despite potential medical consequences for the patient.

(1983). Children's Perception of Science: an analysis of the notion of infallibility in the coverage of evolution in ‘textbooks’ and some other teaching materials. Educational Studies: Vol. 9, No. 2, pp. 93-103.

This article interrogates the persistence of critical frameworks informed by depth-models of hermeneutics, and the repercussions the equation of “depth” with meaningfulness has for the appreciation of the “shallow” aesthetics of post-classical action cinema. Oppositions such as depth/surface, body/mind, and proximity/distance associated with a hermeneutics of depth are not neutral, but rather exist in a “violent hierarchy”. This ensures that works or styles that foreground surface are automatically deemed to be meaningless. One influential example of this logic is Fredric Jameson's (...) dismissal of postmodern superficiality in favour of modernist depth. In contrast, this article will explore alternative models of postmodern superficiality. Taking up Catherine Constable's reading of Linda Hutcheon, I will endeavour to demonstrate the benefits of adopting a postmodern critical perspective when engaging with texts that resist or problematise depth-models. Through a close reading of a key se... (shrink)

Inadequate pain control, especially in older adults, remains a significant issue when caring for this population. Older adults, many of whom experience multiple acute and chronic conditions, are especially vulnerable to having their pain seriously underassessed and inadequately treated. Nurses have an ethical obligation to appropriately treat patients’ pain. To fulfill their ethical obligation to relieve pain in older patients, nurses often need to advocate on their behalf. This article provides an overview of the persistent problem of undertreated pain in (...) older adults and explores how nurses can meet this ethical duty through the application of Beauchamp and Childress’ three principles of beneficence. (shrink)

Training in the journalism profession is proving to be increasingly complex, given that the profession is regularly subject to uncertainty as a result of socially sensitive issues, all in a constantly changing environment in which the profession is being discredited by the general public. This process requires a quest for recognition by professionals themselves in order to preserve their identity and professionalism. A question thus emerges: How does this mis/recognition affect the discourse of journalism teachers, and how is it reflected (...) in their discursive strategies established with their students? This article aims to create a dialogue between two theoretical frameworks, ergology and semiolinguistics, in order to shed light on the way in which the standards of the profession are questioned. (shrink)

When it originated in the late 19th century, psychometrics was a field with both a scientific and a social mission: psychometrics provided new methods for research into individual differences, and at the same time, these psychometric instruments were considered a means to create a new social order. In contrast, contemporary psychometrics - due to its highly technical nature and its limited involvement in substantive psychological research - has created the impression of being a value-free discipline. In this article, we develop (...) a contrasting characterization of contemporary psychometrics as a value-laden discipline. We expose four such values: that individual differences are quantitative (rather than qualitative), that measurement should be objective in a specific sense, that test items should be fair, and that utility of a model is more important than its truth. Our goal is not to criticize psychometrics for employing these values, but rather to bring them into the open and to show that these values are not inevitable and are in need of systematic evaluation. (shrink)

Asay (2018) criticizes our contention that psychologists do best to adhere to a substantive theory of correspondence truth. He argues that deflationary theory can serve the same purposes as correspondence theory. In the present article we argue that (a) scientific realism, broadly construed, requires a version of correspondence theory and (b) contrary to Asay’s suggestion, correspondence theory does have important additional resources over deflationary accounts in its ability to support generalizations over classes of true sentences.

According to Oude Maatman (2020), our recent suggestion (Borsboom et al., 2019) that symptom networks are irreducible because they rely on folk psychological descriptions, threatens to undermine the main achievements of the network approach. In this article, we take up Oude Maatman’s challenge and develop an argument showing in what sense folk psychological concepts describe features of reality, and what it means to say that folk psychology is a causal language.

Since 1984, the idea of health equity has proliferated throughout public health discourse with little mainstream critique for its variability and distance from its original articulation signifying social transformation and a commitment to social justice. In the years since health equity’s emergence and proliferation, it has taken on a seemingly endless range of invocations and deployments, but it most often translates into proactive and apolitical discourse and practice. In Margaret Whitehead’s influential characterization, achieving health equity requires determining what is inequitable (...) by examining and judging the causes of inequalities in the context of what is going on in the rest of society. However, it also remains unclear how or if public health actors examine and judge the causes of health inequality. In this article, we take the concept of health equity itself as an object of study and consider the ways in which its widespread deployment has entailed a considerable emptying of its semantic and political content. We point toward equity’s own discursive productivity as well as the quantifying imperative embedded within evidentiary norms that govern knowledge making, and performance management regimes that govern public health practices. Under current conditions of knowledge making and performance evaluation, a range of legitimate action and inaction is produced at the same time that more socially transformative action is legitimately curtailed—not merely by politics, but by the rules of the field in which public health actors work. Ultimately, meaningful progress on a normative ethical idea like health equity will require both substantial philosophical content and an analysis of what is going on in the rest of society. (shrink)

Cognition played a pivotal role in the acceleration of technological innovation during the Industrial Revolution. Growing affluence may have provided favourable environmental conditions for a boost in cognition, enabling individuals to tackle more complex problems. Dynamical systems thinking may provide useful tools to describe sudden transitions like the Industrial Revolution, by modelling the recursive feedback between psychology and environment.

Symbols enable people to organize and communicate about the world. However, the ways in which symbolic knowledge is learned and then represented in the mind are poorly understood. We present a formal analysis of symbolic learning—in particular, word learning—in terms of prediction and cue competition, and we consider two possible ways in which symbols might be learned: by learning to predict a label from the features of objects and events in the world, and by learning to predict features from a (...) label. This analysis predicts significant differences in symbolic learning depending on the sequencing of objects and labels. We report a computational simulation and two human experiments that confirm these differences, revealing the existence of Feature-Label-Ordering effects in learning. Discrimination learning is facilitated when objects predict labels, but not when labels predict objects. Our results and analysis suggest that the semantic categories people use to understand and communicate about the world can only be learned if labels are predicted from objects. We discuss the implications of this for our understanding of the nature of language and symbolic thought, and in particular, for theories of reference. (shrink)

OntoClean is an approach towards the formal evaluation of taxonomic relations in ontologies. The application of OntoClean consists of two main steps. First, concepts are tagged according to meta-pr...

Mature rats were kept on protein-deficient diets to test the hypothesis that late-onset protein restriction results in deficits and to determine the feasibility of doing nutrition-behavior research with old naive animals. A 3% low-protein (LP) group and a 24% adequate-protein (AP) pair-fed control were used. Body weights and plasma protein concentrations were lower and exploratory behavior and motor coordination were poorer for LP rats. Both groups preferred the 24% protein diet. LP rats habituated slower and failed to overcome an initial (...) black preference on an oddity discrimination learning task. Nutrition-behavioral research with older rats is feasible, and late-onset protein restriction produces psychobiological deficits. (shrink)