The project of an International Congress of Psychology by J. Ochorowicz (1881)

Since the second part of the 19th century, there has been a great increase in the number of international scientific congresses, and they appear a necessary step in the maturation of knowledge. The first person to explicitly suggest the necessity of an international congress of psychology was Julian Ochorowicz (1850–1917), who was considered the founder of Polish psychology. In 1881 he sent an article to Théodule Ribot, editor of Revue Philosophique de la France et de l'Étranger, entitled “Project of an International Congress of Psychology,” which was published in Ribot's journal. In it he described the dispersed state of psychology in 1881 and the previous 50 years, including 12 subdisciplines ranging from psychophysics to the psychology of art, and how it should aim for unification. He suggested collective efforts to progress rapidly, with widespread collaboration and the continuous exchange of observations, information, and experiments. Having international congresses would constitute a forum for such exchanges, and in his article he outlined the steps that should be taken for putting together the first international congress of psychology. The proposal was quite extensive and fanciful, making Ribot somewhat doubt its realizability. Nevertheless, the first international psychology congress took place in Paris in 1889, 8 years after the publication of Ochorowicz's article. This quick development could be attributed to the creation of the psychology societies, one of the first being La Société de Psychologie Physiologique, which was created in France in 1885. The creation of this society also contributed to psychology being recognized as a scientific domain. In line with this, the final programme of the congress was less extensive than that proposed in Ochorowicz's article, focusing on physiological aspects and ignoring the philosophical ones. In the present paper, the historical context of Ochorowicz's article is outlined, followed by a translation of his article.     

Perceived acculturation preferences of minority groups and intergroup discrimination: When culture‐specific intergroup norms matter

The present research seeks to show that culture‐specific variables can moderate the impact of general determinants of intergroup discrimination, usually assumed to operate identically across cultures. The present paper reports the results of two studies testing the hypothesis that, in France, the cultural norm of new laïcité (a French‐specific ideology of secularism) can moderate the impact of the perceived host culture adoption and national identification on discrimination against immigrants. We conducted a correlational study (Study 1, N = 249) and an experiment (Study 2, N = 143) using two distinct and previously validated measures of intergroup discrimination. Results showed that the higher the perception of a norm of new laïcité, the stronger the link between host culture adoption and national identification. More specifically, among native French people, the perception of a weak host culture adoption and a weak national identification on the part of immigrants produced higher levels of discriminatory behavior especially when the intergroup norm of new laïcité was high. These studies highlight the fundamental importance of taking into account culture‐specific variables in the study of discrimination and point to the fact that, by changing the normative context, one may change intergroup behaviors. Reducing intergroup discrimination in applied settings may require targeting culture‐specific intergroup norms.     

Reasoning from an incompatibility: False dilemma fallacies and content effects

In the present studies, we investigated inferences from an incompatibility statement. Starting with two propositions that cannot be true at the same time, these inferences consist of deducing the falsity of one from the truth of the other or deducing the truth of one from the falsity of the other. Inferences of this latter form are relevant to human reasoning since they are the formal equivalent of a discourse manipulation called the false dilemma fallacy, often used in politics and advertising in order to force a choice between two selected options. Based on research on content-related variability in conditional reasoning, we predicted that content would have an impact on how reasoners treat incompatibility inferences. Like conditional inferences, they present two invalid forms for which the logical response is one of uncertainty. We predicted that participants would endorse a smaller proportion of the invalid incompatibility inferences when more counterexamples are available. In Study 1, we found the predicted pattern using causal premises translated into incompatibility statements with many and few counterexamples. In Study 2A, we replicated the content effects found in Study 1, but with premises for which the incompatibility statement is a non-causal relation between classes. These results suggest that the tendency to fall into the false dilemma fallacy is modulated by the background knowledge of the reasoner. They also provide additional evidence on the link between semantic information retrieval and deduction.     

Toward an evolutionary basis for resilience to drug addiction

According to Müller & Schumann (M&S), people would have evolved adaptations for learning to use psychoactive plants and drugs as instruments that reveal particularly advantageous in modern urban environments. Here I "instrumentalize" this framework to propose an evolutionary basis for the existence of a biological resilience to drug addiction in people.     

Elite sport is not an additional source of distress for adolescents with high stress levels

This study examined whether participation in elite sport interacts with stress in decreasing or increasing symptoms of depression and anxiety among adolescents, and further, whether the interplay between participation in high-performance sport and stress is related to the perceived quality of sleep. 434 adolescents (278 girls, 156 boys; age: M = 17.2 yr.) from 15 "Swiss Olympic Sport Classes" and 9 conventional classes answered a questionnaire and completed a 7-day sleep log. Analyses of covariance showed that heightened stress was related to more depressive symptoms and higher scores for trait-anxiety. Moreover, those classified as having poor sleep by a median split cutoff reported higher levels of depressive symptoms. No significant (multivariate) main effects were found for high-performance sport athletes. Similarly, no significant two- or three-way interaction effects were found. These results caution against exaggerated expectations concerning sport participation as a stress buffer. Nevertheless, participation in high-performance sport was not found to be an additional source of distress for adolescents who reported high stress levels despite prior research that has pointed toward such a relationship.     

Developmental differences in prefrontal activation during working memory maintenance and manipulation for different memory loads

The ability to keep information active in working memory is one of the cornerstones of cognitive development. Prior studies have demonstrated that regions which are important for working memory performance in adults, such as dorsolateral prefrontal cortex (DLPFC), ventrolateral prefrontal cortex (VLPFC), and superior parietal cortex, become increasingly engaged across school-aged development. The primary goal of the present functional MRI study was to investigate the involvement of these regions in the development of working memory manipulation relative to maintenance functions under different loads. We measured activation in DLPFC, VLPFC, and superior parietal cortex during the delay period of a verbal working memory task in 11-13-year-old children and young adults. We found evidence for age-related behavioral improvements in working memory and functional changes within DLPFC and VLPFC activation patterns. Although activation profiles of DLPFC and VLPFC were similar, group differences were most pronounced for right DLPFC. Consistent with prior studies, right DLPFC showed an interaction between age and condition (i.e. manipulation versus maintenance), specifically at the lower loads. This interaction was characterized by increased activation for manipulation relative to maintenance trials in adults compared to children. In contrast, we did not observe a significant age-dependent load sensitivity. These results suggest that age-related differences in the right DLPFC are specific to working memory manipulation and are not related to task difficulty and/or differences in short-term memory capacity.     

Movement variability and skill level of various throwing techniques

In team-handball, skilled athletes are able to adapt to different game situations that may lead to differences in movement variability. Whether movement variability affects the performance of a team-handball throw and is affected by different skill levels or throwing techniques has not yet been demonstrated. Consequently, the aims of the study were to determine differences in performance and movement variability for several throwing techniques in different phases of the throwing movement, and of different skill levels. Twenty-four team-handball players of different skill levels (n=8) performed 30 throws using various throwing techniques. Upper body kinematics was measured via an 8 camera Vicon motion capture system and movement variability was calculated. Results indicated an increase in movement variability in the distal joint movements during the acceleration phase. In addition, there was a decrease in movement variability in highly skilled and skilled players in the standing throw with run-up, which indicated an increase in the ball release speed, which was highest when using this throwing technique. We assert that team-handball players had the ability to compensate an increase in movement variability in the acceleration phase to throw accurately, and skilled players were able to control the movement, although movement variability decreased in the standing throw with run-up.     

Trait anxiety focuses spatial attention

Some findings suggest that trait anxiety impairs selective attention (e.g., Fox, 1993) while others suggest the opposite (e.g., Murray & Janelle, 2003). Both views may hold some truth if trait anxiety affects different levels of selective attention in opposite directions: trait anxiety might improve spatial attention, or perceptual selection, but weaken postperceptual selection. We used an adaptation of the flanker task (Eriksen & Hoffman, 1973) which distinguishes between spatial attention and postperceptual selection (Caparos & Linnell, 2010) to test this hypothesis. Trait anxiety was found to improve spatial attention but not to affect post-perceptual selection. The latter null effect may have resulted from the relatively high perceptual load used in this study. The focusing effect of trait anxiety suggests that anxiety reduces perceptual resources or increases cognitive engagement.