Vocalisations et communication chez le nourrisson de 6 à 15 mois

Cette recherche s'inspire à la fois des travaux portant sur l'émergence de la communication intentionnelle et des études phonologiques des vocalisations prélangagières. Elle vise à cerner la valeur communicative des vocalisations au cours de leur développement, ainsi qu'à vérifier si le nourrisson utilise un type particulier de vocalisations (prélangagier ou non langagier) pour communiquer avec autrui. Vingt-quatre nourrissons ont été observés à 6, 9, 12, et 15 mois, dans le cadre de tâches de demande. Les résultats révèlent que le nourrisson utilise davantage son canal vocal avec l'âge, et qu'il dirige de plus en plus ses vocalisations vers autrui. Il ne semble toutefois pas employer préférentiellement un type particulier de vocalisations selon qu'il communique avec autrui ou non.     

Comprehensive stereotype content dictionaries using a semi‐automated method

Advances in natural language processing provide accessible approaches to analyze psychological open‐ended data. However, comprehensive instruments for text analysis of stereotype content are missing. We developed stereotype content dictionaries using a semi‐automated method based on WordNet and word embeddings. These stereotype content dictionaries covered over 80% of open‐ended stereotypes about salient American social groups, compared to 20% coverage from words extracted directly from the stereotype content literature. The dictionaries showed high levels of internal consistency and validity, predicting stereotype scale ratings and human judgments of online text. We developed the R package Semi‐Automated Dictionary Creation for Analyzing Text (SADCAT; https://github.com/gandalfnicolas/SADCAT ) for access to the stereotype content dictionaries and the creation of novel dictionaries for constructs of interest. Potential applications of the dictionaries range from advancing person perception theories through laboratory studies and analysis of online data to identifying social biases in artificial intelligence, social media, and other ubiquitous text sources.     

Romantic love versus reproduction opportunities: Disentangling the contributions of different anxiety buffers under conditions of existential threat

Romantic relationships and offspring are discussed as anxiety buffers in terror management processes. We examined the relationship between these possible buffers and tested whether romantic relationships reduce existential threat due to reproduction opportunities or if they represent a distinct anxiety buffer. Contrary to our initial expectations, thinking about a positive romantic relationship without (vs. with) own children increased partner affect (Study 1) and commitment (Study 2) and decreased punishment intentions (Study 2) after mortality salience. These effects were mediated by participants' desire for romantic love. Furthermore, thinking about positive nonparental (vs. parental) romantic relationships lowered death‐thought accessibility (Study 3). Together, these findings suggest that romantic relationships form a distinct anxiety buffer that is only effective when the cultural (romance) instead of the biological (having children) nature of the relationship is highlighted. We discuss the role of anxiety buffer salience for determining whether offspring concerns buffer or increase existential threat.     

Information Retrieval in Tip of the Tongue States: New Data and Methodological Advances

Research on Tip of the Tongue (ToT) states has been used to determine whether access to syntactic information precedes access to phonological information. This paper argues that previous studies have used insufficient analyses when investigating the nature of seriality of access. In the first part of this paper, these complex issues are discussed and suitable analyses proposed. In the second part, new experimental data are presented. In Experiment 1, English speakers were asked to give information about mass/count status and initial phoneme of nouns, when in a ToT state. In Experiment 2, German speakers were asked to report grammatical gender and initial phoneme of nouns, when in a ToT state. Evidence that syntactic and phonological information are accessed independently was obtained for both languages. Implications for models of language production and further methodological issues in ToT research are discussed.     

Sensory load incurs conceptual processing costs

Theories of grounded cognition propose that modal simulations underlie cognitive representation of concepts [Barsalou, L. W. (1999). Perceptual symbol systems. Behavioral and Brain Sciences, 22(4), 577-660; Barsalou, L. W. (2008). Grounded cognition. Annual Review of Psychology, 59, 617-645]. Based on recent evidence of modality-specific resources in perception, we hypothesized that verifying properties of concepts encoded in different modalities are hindered more by perceptual short-term memory load to the same versus different sensory modality as that used to process the property. We manipulated load to visual and auditory modalities by having participants store one or three items in short-term memory during property verification. In the high (but not low) load condition, property verification took longer when the property (e.g., yellow) involved the same modality as that used by the memory load (e.g., pictures). Interestingly, similar interference effects were obtained on the conceptual verification and on the memory task. These findings provide direct support for the view that conceptual processing relies on simulation in modality-specific systems.     

ALTERNATIVE AXIOMATICS AND COMPLEXITY OF DELIBERATIVE STIT THEORIES

We propose two alternatives to Xu’s axiomatization of Chellas’s STIT. The first one simplifies its presentation, and also provides an alternative axiomatization of the deliberative STIT. The second one starts from the idea that the historic necessity operator can be defined as an abbreviation of operators of agency, and can thus be eliminated from the logic of Chellas’s STIT. The second axiomatization also allows us to establish that the problem of deciding the satisfiability of a STIT formula without temporal operators is NP-complete in the single-agent case, and is NEXPTIME-complete in the multiagent case, both for the deliberative and Chellas’s STIT.     

Aggressor and victim perspective-related differences in perceived legitimacy of aggression in soccer

The purpose of this role-playing study was to explore the perceived legitimacy of aggression in soccer as a function of perspective-related differences (aggressor vs victim) and type of aggression (instrumental vs hostile). 120 soccer players watched videotaped aggressive interactions in soccer and took the perspective of the actors (aggressor then victim or the reverse). Then they rated the legitimacy of each aggressive behavior depending on its ultimate goal (instrumental then hostile or the reverse). When participants adopted the aggressor perspective, they perceived instrumental aggression as more legitimate than hostile aggression. In contrast, when participants took the perspective of the victim, no significant difference was found regardless of the type of aggression. The discussion focussed on implications and consequences of such divergences in aggressive sport situations.     

Semantically induced memories of love and helping behavior

This study tested the effect of semantically induced thoughts of love on helping behavior. In a natural setting, 253 participants were interviewed and asked to retrieve the memory of a love episode or, in the control condition, a piece of music they loved. They then met another confederate who asked for money. Analysis showed that inducing the idea of love had a significant positive effect on compliance to a request by a male passerby who was asked for help by a female confederate, but not by a female passerby. Theoretical explanations are presented, based on a gender-role expectation hypothesis.     

The small improvement argument

It is commonly assumed that moral deliberation requires that the alternatives available in a choice situation are evaluatively comparable. This comparability assumption is threatened by claims of incomparability, which is often established by means of the small improvement argument (SIA). In this paper I argue that SIA does not establish incomparability in a stricter sense. The reason is that it fails to distinguish incomparability from a kind of evaluative indeterminacy which may arise due to the vagueness of the evaluative comparatives ‘better than,’ ‘worse than,’ and ‘equally as good as.’     

Preschoolers’ use of feedback for flexible behavior: Insights from a computational model

This study addressed preschoolers’ cognitive flexibility in an inductive task requiring response feedback processing to infer relevant task goals. A total of 63 4- to 6-year-olds were tested on a perceptual matching task in which they needed to switch attention among three colors. A computational model was designed to track down how responses to positive and negative feedback changed as children progressed through the task. The results showed that children’s differential response to positive and negative feedback developed with age. In addition, age differences in feedback responding increased as the task unfolded. These findings are interpreted as reflecting an increase in flexibility with age in terms of growing efficiency in feedback processing.