Children's use of conversational rules in a referential communication task

Three experiments investigating first-grade children's comprehension, of referentially ambiguous messages are reported. In the first one children were shown to interpret a literally ambiguous message by means of the strategy based on the conversational Maxim of Antecedent rather than that based on the more appropriate Maxim of Quantity. The results of the second experiment suggest that the Maxim of Quantity can be used by children, provided the situation is quite simple; they also suggest that after having used such a maxim in a simple situation, children can apply it in a more complex situation. This generalization to new situations, however, is not a mere perseveration since, as shown in the third experiment, children can adjust their comprehension strategy to the situation requirements. The results are discussed with reference to the recent proposals on referential ambiguity and children communication failures.     

The motor way: Clinical implications of understanding and shaping actions with the motor system in autism and drug addiction

To understand others’ minds is crucial for survival; however, it is quite puzzling how access to others’ minds can be—to some extent—direct and not necessarily mediated by conceptual reasoning. Recent advances in neuroscience have led to hypothesize a role for motor circuits not only in controlling the elementary physical features of movement (e.g., force, direction, and amplitude), but also in understanding and shaping human behavior. The concept of “motor cognition” refers to these aspects, and neurophysiological, neuroimaging, and behavioral studies in human and nonhuman primates support this view. From a clinical perspective, motor cognition represents a challenge in several domains. A thorough investigation of the neural mechanisms mediating motor action/intention understanding and automatized/compulsive behaviors seems to be a promising way to tackle a range of neurodevelopmental and drug-related disorders. On the one hand, anomalies in motor cognition may have cascade effects on social functioning in individuals with autism spectrum disorder (ASD); on the other, motor cognition may help explain the pathophysiology of drug-seeking and drug-taking behaviors in the most severe phase of drug addiction (i.e., see drug dependence, motor low-order cue reactivity). This may represent a promising approach that could improve the efficacy of rehabilitative interventions. The only way to shed light on multifactorial disorders such as ASD and drug addiction is through the investigation of their multiple factors. This motor way can promote new theoretical and experimental perspectives that would help bridge the gap between the basic neuroscience approach and clinical practice.     

Improving academic attitudes among ethnic minority youth at risk for early school leaving: the interactive effects of cross‐group friendships and ethnic identity

A growing body of research suggests that positive interethnic experiences enhance academic attitudes among ethnic minority youth. A number of studies also show that minority youth with an achieved ethnic identity have better academic attitudes and performance. Integrating these literatures, we aim to verify the combined effects of cross‐group friendships and ethnic identity on academic attitudes among a sample of youth at risk for early school leaving. The results showed that cross‐group friendships had a positive impact on academic attitudes for minority youth, but not for majority youth. However, individual levels of ethnic identity moderated these effects, which held true for minority youth with higher levels of ethnic identity. The theoretical and practical implications of these findings are discussed.     

Outgroup prejudice and perceptions of prosocial intergroup behaviors

How people perceive outgroup prosocial behaviors is an important but under‐researched aspect of intergroup relations. In three experiments conducted in two cultural contexts (Italy and Kosovo) and with two different populations (adolescents and adults; N = 586), we asked participants to imagine being offered help by an outgroup versus ingroup member. Participants attributed fewer prosocial motives to and were less willing to accept help from the outgroup (vs. ingroup) member. This was particularly true for highly prejudiced participants and when the outgroup was described negatively. Participants' perceptions of the outgroup helper's prosocial motives and expected quality of the interaction with the helper mediated the effect of helper's group membership on willingness to accept the help (Experiment 3). We discuss the theoretical and practical implications of these findings for intergroup relations.     

Stabilizing Quantum Disjunction

Since the appearance of Prior’s tonk, inferentialists tried to formulate conditions that a collection of inference rules for a logical constant has to satisfy in order to succeed in conferring an acceptable meaning to it. Dummett proposed a pair of conditions, dubbed ‘harmony’ and ‘stability’ that have been cashed out in terms of the existence of certain transformations on natural deduction derivations called reductions and expansions. A long standing open problem for this proposal is posed by quantum disjunction: although its rules are intuitively unstable, they pass the test of existence of expansions. Although most authors view instabilities of this kind as too subtle to be detected by the requirement of existence of expansions, we first discuss a case showing that this requirement can indeed detect instabilities of this kind, and then show how the expansions for disjunction-like connectives have to be reformulated to rule out quantum disjunction. We show how the alternative pattern for expansions can be formulated for connectives and quantifiers whose rules satisfy a scheme originally developed by Prawitz and Schroeder-Heister. Finally we compare our proposal with a recent one due to Jacinto and Read.     

Learn locally, act globally: Learning language from variation set cues

Variation set structure - partial overlap of successive utterances in child-directed speech - has been shown to correlate with progress in children’s acquisition of syntax. We demonstrate the benefits of variation set structure directly: in miniature artificial languages, arranging a certain proportion of utterances in a training corpus in variation sets facilitated word and phrase constituent learning in adults. Our findings have implications for understanding the mechanisms of L1 acquisition by children, and for the development of more efficient algorithms for automatic language acquisition, as well as better methods for L2 instruction.     

Assessing the interplay between fear and learning in mice exposed to a live rat in a spatial memory task (MWM)

In this study we tested the hypothesis that fear might facilitate learning when experienced contextually to the task. To this purpose, learning and memory performance of CD-1 mice in a Morris Water Maze (MWM) was assessed in the presence of a live predator (rat). Results indicate that a live predator induced specific predatory-avoidance responses, such as diving behavior and thigmotaxis. The rat-exposed group showed the most adaptive strategy, balancing anti-predator behavior and escape responses, while the rat pre-exposed group showed impairment in the initial phases of the acquisition. The probe trial revealed distinct swimming patterns but equal memory abilities in the different groups. Overall, this procedure represents a novel and easy test to assess the effects of stressful stimuli, contextually to spatial learning and memory performance, in mice.     

unemployment,social support,individual resources,and job search behavior

The authors investigated the relation between the social support received by unemployed individuals (N = 104) and their job search behavior. A moderated mediation model demonstrated that the effect of social support on job search behaviors was mediated by self‐esteem but only if adequacy of social support was perceived as low. In addition, the effect of social support on job search behavior was partially mediated by optimistic expectations and resilience. In sum, social support seems to be a resource with complex and partially surprising effects on job search behavior.     

“Octave illusion” or “Deutsch’s illusion”?

The “Deutsch’s illusion” occurs in most people when a dichotic pair of tones spaced an octave apart is presented repeatedly in alternation, so that when the right ear receives the high tone, the left ear receives the low tone, and vice versa. The illusory percept consists typically in a single low tone heard at one ear alternating with a single high tone heard at the other ear. Here, we investigate whether the frequency interval between the tones and their duration play a role in the perception of the illusion. By testing 74 subjects we demonstrate that the illusion is not confined to tones spaced an octave apart but it is perceivable also with tones separated by a major seventh, a minor ninth, a major ninth, and a minor tenth. Regarding duration, the present results show that the illusion is stronger with tones lasting 500 than 200 ms. The present results suggest that the perceptual mechanisms at the basis of the illusion are not strictly linked to the frequency relationships between the dichotic tones.