Time-dependent effects of treadmill exercise on aversive memory and cyclooxygenase pathway function

Exercise induces brain function adaptations and improves learning and memory; however the time window of exercise effects has been poorly investigated. Studies demonstrate an important role for cyclooxygenase-2 (COX-2) pathway function in the mechanisms underlying memory formation. The aim of present work was to investigate the effects of treadmill exercise on aversive memory and COX-2, PGE(2) and E-prostanoid receptors contents in the rat hippocampus at different time points after exercise has ended. Adult male Wistar rats were assigned to non-exercised (sedentary) and exercised (running daily for 20min, for 2weeks) groups. The inhibitory avoidance task was used to assess aversive memory and the COX-2, PGE(2) and E-prostanoid receptors (EP1, EP2, EP3 and EP4) levels were determined 1h, 18h, 3days or 7days after the last training session of treadmill exercise. The step down latency in the inhibitory avoidance, COX-2 and EP4 receptors levels were acutely increased by exercise, with a significant positive correlation between aversive memory performance and COX-2 levels. Increased EP2 content decreased PGE(2) levels were observed 7days after the last running session. The treadmill exercise protocol facilitates inhibitory avoidance memory and induces time-dependent changes on COX-2 pathways function (COX-2, PGE(2) and EP receptors).     

Behavioral,Affective, and Cognitive Parenting Mechanisms of Child Internalizing and Externalizing Problems during the COVID-19 Pandemic

Research on Child and Adolescent Psychopathology - The COVID-19 pandemic has led to increased mental health concerns, including depression and anxiety among parents and internalizing and...     

Attenuating the haptic horizontal—vertical curvature illusion

In a number of experiments, blindfolded subjects traced convex curves whose verticals were equal to their horizontal extent at the base. Overestimation of verticals, as compared with horizontals, was found, indicating the presence of a horizontal-vertical illusion with haptic curves, as well as with visible curves. Experiment 1 showed that the illusion occurred with stimuli in the frontal plane and with stimuli that were flat on the table surface in vision and touch. In the second experiment, the stimuli were rotated, and differences between vision and touch were revealed, with a stronger illusion in touch. The haptic horizontal-vertical illusion was virtually eliminated when the stimuli were bimanually touched using free exploration at the body midline, but a strong illusion was obtained when curves were felt with two index fingers or with a single hand at the midline. Bimanual exploration eliminated the illusion for smaller 2.5- through 10.2-cm stimuli, but a weakened illusion remained for the largest 12.7-cm patterns. The illusion was present when the stimuli were bimanually explored in the left and right hemispace. Thus, the benefits of bimanual exploration derived from the use of the two hands at the body midline combined with free exploration, rather than from bimanual free exploration per se. The results indicate the importance of haptic exploration at the body midline, where the body can serve as a familiar reference metric for size judgments. Alternative interpretations of the results are discussed, including the impact of movement-based heuristics as a causal factor for the illusion. It was suggested that tracing the curve’s peak served to bisect the curve in haptics, because of the change in direction.     

Qualitative Exploration of the Experiences and Challenges of Adolescents during Pregnancy

This study explores and describes the experiences and challenges of pregnant adolescents (N = 9, mean age = 16.33 years, SD = 1.58 years) by focusing on their thoughts and feelings about their pregnancies and future prospects. The expectant mothers were in their in their second and third trimester of pregnancy. All participants were poor working-class Black South Africans from different ethnic groups. Two were Tsonga, three Zulu and four Tswana speakers. Data were collected using semistructured interviews and analysed using thematic content analysis. Findings suggest that family relationships after disclosure of the pregnancy were strained, particularly the father-daughter relationship. The teens expressed unpreparedness for the challenges of motherhood, uncertainty about the future and feelings of anger, regret and anxiety.     

El pensamiento creador

RESUMEN

Tanto en la perspectiva diferencial como en el análisis cognitivo o más ligado a la “psicología general”, el problema de la creatividad ha preocupado a los psicólogos durante décadas. Bajo la etiqueta general de “creatividad” se sitúan algunos de los interrogantes más apasionantes que se pueden estudiar en psicología: Definición de creatividad, procesos implicados en la creatividad, la existencia de diferencias individuales. En este artículo se hace una revisión sumaria de las distintas teorías del proceso creador de Bus y Mansfield, que han intentado dar cuenta de los interrogantes antes mencionados.     

Estudio diferencial del pensamiento creador en los campos simbólico,semántico y figurativo

Resumen

Se plantea un intento de síntesis teórica y empírica entre dos aproximaciones al estudio del pensamiento creador: la asociativa y ta factorial.

Tras el análisis de las teorías de Mednick y Guilford como los modelos más sistemáticos en ambas orientaciones se realizó un estudio factorial con tres muestras de sujetos representativos de tres contenidos de pensamiento definidos en el modelo de Guilford: periodistas (contenido semántico), matemáticos (contenido simbólico) y pintores (contenido figurativo). Junto a una selección de tareas de la batería de Guilford para la medida del pensamiento divergente correspondientes a las tres áreas de información evaluadas, se aplicó el RAT de Mednick a los 171 sujetos. Se realizaron cuatro análisis factoriales, uno global y los otros diferenciando por grupos de sujetos.

Los resultados fueron una confirmación de la teoría factorial de la creatividad de Guilford, al definirse factorialmente tres aptitudes perfectamente diferenciadas en función de los contenidos, pero no se pudo confirmar la naturaleza asociativa de las aptitudes mentales de creatividad en los términos propuestos por Mednick, dada la ausencia de resultados significativos con respecto al RAT. Las conclusiones de este trabajo son inequívocamente confirmadoras de la versión propuesta en las hipótesis de la teoría de Guilford.     

Kant on Acting from Juridical Duty

ABSTRACT

A much debated passage in the Metaphysics of Morals often leads commentators to believe that it is not possible to act from juridical duty. On the one hand, Kant says that all lawgiving includes an incentive ‘which connects a ground to determining choice to this action subjectively with the representation of the law’ (MM: 218). On the other hand, he claims that juridical lawgiving ‘does not include the incentive of duty in the law’ (MM: 219). The first claim seems to entail that agents can perform a juridical duty for the sake of that duty; the second seems to entail that agents cannot perform a juridical duty for the sake of that duty. This paper shows that it is possible to reconcile both passages and to claim that one can act from juridical duty in Kant’s terms. First, it gives an account of what can be called the paradox of juridical duties. Second, it discusses briefly how responses to the paradox remain somewhat unsatisfactory. Finally, it clarifies how agents can act with no other incentive but the actual juridical duty without endangering the Kantian morality-law divide.     

Attention and Short-Term Memory in Normal Children,Aggressive Children,and Non-Aggressive Children with Attention-Deficit Disorder

In the present study, fifteen 7- to 9-year-old male school children with attention deficit disorder (ADD) as well as matched groups of aggressive and normal children were compared on scores obtained for initial acquisition of information and its maintenance in the short-term score under various attentional loads. Bi-colored, alphanumeric arrays were used in a partial-report technique. Retention was measured 0, 5, 10, and 20 s, after pre- and postexposure under both rehearsal and nonrehearsal conditions. ADD children (a) were deficient in original acquisition, (b) were unable to take sufficient advantage of decreased load conditions, and (c) showed decrements over time that paralleled those of the control group (CG). The results have been interpreted in light of maturational lag and the differences between ADD and aggressive groups.     

Regional conferences—A capacity‐building mandate: Report on CRCP2011—Building Bridges and Building a Regional Structure

The Caribbean Regional Conference of Psychology was held in Nassau, The Bahamas, from 15 to 18 November 2011, under the auspices of the International Association of Applied Psychology (IAAP), the International Union of Psychological Science (IUPsyS), and the International Association for Cross‐Cultural Psychology (IACCP). The conference was hosted by the Bahamas Psychological Association, and organized by a committee chaired by Dr Ava Thompson, College of the Bahamas. The CRCP2011 attracted over 400 participants from 37 countries, including 20 nations/territories in the Caribbean. A broad scientific program, organized around six conference themes, addressed strengths and challenges to psychology in the region; the current state of psychological research, assessment, and intervention; historical, cultural, and language influences; and links between Caribbean and global models. Conference outcomes included planning for a series of publications to expand on conference themes and presentations, as well as establishment of a steering group to launch a regional organization to support the science and practice of psychology in the Caribbean.