Schizotypy and verbal memory in the adolescent general population

The following study examines the relationship between verbal memory deficits and schizotypal traits measured psychometrically from a non- clinical adolescent population. In this transversal analytical study participated 139 subjects. They were secondary school students, with ages ranging from 13 to 16 years old (mean= 14, 35; Sta.Dev.= 0, 548). After administrating the scales O-LIFE (psychometrical schizotypy), CVLT (verbal memory), and Letters and Numbers subtest of WAIS-III (working memory), data was analyzed utilizing Pearson correlations and mean comparison test. Results showed lack of relations between schizotypy measures and working memory. Nonetheless, some of the O-LIFE dimensions correlated with verbal memory. These findings support partly the literature reviewed. Yet, more work focused on schizotypy and cognitive deficits as risk factors are suggested.     

Retrieval induces hippocampal-dependent reconsolidation of spatial memory

Nonreinforced retrieval can cause extinction and/or reconsolidation, two processes that affect subsequent retrieval in opposite ways. Using the Morris water maze task we show that, in the rat, repeated nonreinforced expression of spatial memory causes extinction, which is unaffected by inhibition of protein synthesis within the CA1 region of the dorsal hippocampus. However, if the number of nonreinforced retrieval trials is insufficient to induce long-lasting extinction, then a hippocampal protein synthesis-dependent reconsolidation process recovers the original memory. Inhibition of hippocampal protein synthesis after reversal learning sessions impairs retention of the reversed preference and blocks persistence of the original one, suggesting that reversal learning involves reconsolidation rather than extinction of the original memory. Our results suggest the existence of a hippocampal protein synthesis-dependent reconsolidation process that operates to recover or update retrieval-weakened memories from incomplete extinction.     

The Nuts and Bolts of Behavioral Observation of Marital and Family Interaction

Despite considerable discussion in the literature about the advantages of observational research and the relative benefits of different coding systems and strategies, little is written about the actual implementation of this assessment strategy. This paper presents an overall framework as well as the essential components involved in collecting (selection of task, setting, unit of analysis, and coding system) and coding (transcribing, selecting and training coders, transforming data, and analyzing reliability) of observational data. To achieve success with observational methods, we emphasize several issues, including (a) the research question as the motivator for all decisions, (b) the interrelatedness of tasks, and (c) the implications of decisions early in the process for later stages of analysis and interpretation. Investigators are encouraged to communicate the details of their observational and coding procedures so that these methods are readily accessible for purposes of replication and comparison.     

Explicit and implicit approach motivation interact to predict interpersonal arrogance

Self-reports of approach motivation are unlikely to be sufficient in understanding the extent to which the individual reacts to appetitive cues in an approach-related manner. A novel implicit probe of approach tendencies was thus developed, one that assessed the extent to which positive affective (versus neutral) stimuli primed larger size estimates, as larger perceptual sizes co-occur with locomotion toward objects in the environment. In two studies (total N = 150), self-reports of approach motivation interacted with this implicit probe of approach motivation to predict individual differences in arrogance, a broad interpersonal dimension previously linked to narcissism, antisocial personality tendencies, and aggression. The results of the two studies were highly parallel in that self-reported levels of approach motivation predicted interpersonal arrogance in the particular context of high, but not low, levels of implicit approach motivation. Implications for understanding approach motivation, implicit probes of it, and problematic approach-related outcomes are discussed.     

Group agential epistemic injustice: Epistemic disempowerment and critical defanging of group epistemic agency1

Expanding Miranda Fricker's (2007) concept of epistemic injustice, recent accounts of agential epistemic injustice (Lackey, 2020; Medina, 2021; Pohlhaus, 2020) have focused on cases in which the epistemic agency of individuals or groups is unfairly blocked, constrained, or subverted. In this article I argue that agential epistemic injustice is perpetrated against marginalized groups not only when their group epistemic agency is excluded, but also when it is included but receives defective uptake that neutralizes their capacity to resist epistemic oppression. I identify two harms that such injustice inflicts on marginalized groups: epistemic disempowerment and critical defanging of resistant epistemic group agency. My analysis shows how the harms of agential epistemic injustice can occur through unfair epistemic exclusions in group dynamics, but also through forms of inclusion in group dynamics that distort or coopt the epistemic agency of the group. Following Emmalon Davis (2018) and her analysis of epistemic appropriation, I argue that the harms of agential epistemic injustice can occur when the resistant epistemic resources of a marginalized group are appropriated in a way that disempowers them and critically defangs their resistant epistemic agency. I use Taylor Rogers’ (2021) analysis of the epistemic appropriation of “#MeToo” and “intersectionality” to show how epistemic disempowerment and critical defanging work in unjust epistemic group dynamics. The article offers a diagnosis of the failures of epistemic responsibility involved in agential epistemic injustice, and some suggestions for resisting those failures and working toward more responsible and just epistemic group dynamics.     

Entrevista con Alan Baddeley

RESUMEN

Tras presentar a este profesor inglés -director de la Applied Psychology Unit- como uno de los investigadores más importantes en psicología cognitiva, la entrevista se centra en la denominada “memoria operativa” o “memoria de trabajo” (working memory) y alguna de sus implicaciones. En primer lugar el autor nos habla de sus estudios sobre el desarrollo de la lectura, afirmando que se puede caracterizar el retraso en el lenguaje como un déficit en la memoria operativa. Seguidamente trata el tema del aprendizaje humano desde la perspectiva de la psicología cognitiva, así como la relación entre su enfoque y el de los procesos automáticos y controlados de Shiffrin y Schneider o el de asignación de recursos de procesamiento de Navon y Gopher. Esta entrevista finaliza analizando las relaciones entre aprendizaje y memoria operativa.     

Routine cognitive errors: A trait-like predictor of individual differences in anxiety and distress

Five studies (N=361) sought to model a class of errors—namely, those in routine tasks—that several literatures have suggested may predispose individuals to higher levels of emotional distress. Individual differences in error frequency were assessed in choice reaction-time tasks of a routine cognitive type. In Study 1, it was found that tendencies toward error in such tasks exhibit trait-like stability over time. In Study 3, it was found that tendencies toward error exhibit trait-like consistency across different tasks. Higher error frequency, in turn, predicted higher levels of negative affect, general distress symptoms, displayed levels of negative emotion during an interview, and momentary experiences of negative emotion in daily life (Studies 2–5). In all cases, such predictive relations remained significant with individual differences in neuroticism controlled. The results thus converge on the idea that error frequency in simple cognitive tasks is a significant and consequential predictor of emotional distress in everyday life. The results are novel, but discussed within the context of the wider literatures that informed them.     

Thermodynamic analysis of Fe contamination in Cu-Mo alloys processed by mechanical alloying

ABSTRACT

This work aims to verify if Fe atoms coming from balls and jars enter into solid solution of Cu-Mo powders during mechanical alloying. The powders were milled and its structure and composition were characterised by scanning and transmission electron microscopy, and X-ray diffraction. Gibbs free of mixing values for Cu-Mo-Fe system were calculated using the Miedema’s model and showed that Cu-rich corner exhibit smallest energy values (<10?kJ?mol^?1). The observed coherency relation Cu(111) || Mo(101) || Fe(101) confirmed formation of solid solution. Fe atoms have entered in solid solution with Cu and Mo and do not remain as particles of second phase.