Eye movements during mental rotation of nonmirrored and mirrored three-dimensional abstract objects

Eye movements were recorded while participants (N = 56) rotated mirrored and nonmirrored abstract, three-dimensional object pairs into different orientations to assess whether there were oculomotoric differences in fixation switches between mirrored and nonmirrored objects and how an object's plane and depth angle affected visual processing. Compared to other studies, especially depth rotation tasks were responsible for a difference in the sum of fixation switches. This difference seemed to be caused by an increase in incongruent fixation switches, while congruent ones remained stable. Theoretical and practical implications of findings are discussed.     

Young children enforce social norms selectively depending on the violator's group affiliation

To become cooperative members of their cultural groups, developing children must follow their group's social norms. But young children are not just blind norm followers, they are also active norm enforcers, for example, protesting and correcting when someone plays a conventional game the "wrong" way. In two studies, we asked whether young children enforce social norms on all people equally, or only on ingroup members who presumably know and respect the norm. We looked at both moral norms involving harm and conventional game norms involving rule violations. Three-year-old children actively protested violation of moral norms equally for ingroup and outgroup individuals, but they enforced conventional game norms for ingroup members only. Despite their ingroup favoritism, young children nevertheless hold ingroup members to standards whose violation they tolerate from outsiders.     

Linear mapping of numbers onto space requires attention

Mapping of number onto space is fundamental to mathematics and measurement. Previous research suggests that while typical adults with mathematical schooling map numbers veridically onto a linear scale, pre-school children and adults without formal mathematics training, as well as individuals with dyscalculia, show strong compressive, logarithmic-like non-linearities when mapping both symbolic and non-symbolic numbers onto the numberline. Here we show that the use of the linear scale is dependent on attentional resources. We asked typical adults to position clouds of dots on a numberline of various lengths. In agreement with previous research, they did so veridically under normal conditions, but when asked to perform a concurrent attentionally-demanding conjunction task, the mapping followed a compressive, non-linear function. We model the non-linearity both by the commonly assumed logarithmic transform, and also with a Bayesian model of central tendency. These results suggest that veridical representation numerosity requires attentional mechanisms.     

Adaptive patterns of stress responsivity: a preliminary investigation

The adaptive calibration model (ACM) is an evolutionary-developmental theory of individual differences in stress responsivity. In this article, we tested some key predictions of the ACM in a middle childhood sample (N = 256). Measures of autonomic nervous system activity across the sympathetic and parasympathetic branches validated the 4-pattern taxonomy of the ACM via finite mixture modeling. Moreover, the 4 patterns of responsivity showed the predicted associations with family stress levels but no association with measures of ecological stress. Our hypotheses concerning sex differences in responsivity were only partly confirmed. This preliminary study provides initial support for the key predictions of the ACM and highlights some of the methodological challenges that will need to be considered in future research on this topic.     

When do adaptive developmental mechanisms yield maladaptive outcomes?

This article discusses 3 ways in which adaptive developmental mechanisms may produce maladaptive outcomes. First, natural selection may favor risky strategies that enhance fitness on average but which have detrimental consequences for a subset of individuals. Second, mismatch may result when organisms experience environmental change during ontogeny, for instance, because they move from one environment to another. Third, organisms may learn about their environment in order to develop an appropriate phenotype; when cues indicate the environmental state probabilistically, as opposed to deterministically, sampling processes may produce mismatch. For each source of maladaptation, we present a selection of the relevant empirical research and illustrate how models from evolutionary biology can be used to make predictions about maladaptation. We also discuss what data can be collected to test these models in humans. Our goal is to show that evolutionary approaches not only yield insights into adaptive outcomes but can also illuminate the conditions leading to maladaptation. This perspective provides additional nuance to the dialectic between the developmental psychopathology model and evolutionary developmental psychology.     

Be aware to care: Public self-awareness leads to a reversal of the bystander effect

The classic bystander effect stipulates that people help others more when they are alone than when other bystanders are present. We reason that, sometimes, the presence of bystanders can increase helping, notably in situations where public self-awareness is increased through the use of accountability cues (e.g., a camera). We conducted two experiments in which we tested this line of reasoning. In both experiments, participants read messages soliciting support in an online forum. We varied the number of people that were present in that forum to create a bystander and an alone condition. In Study 1, we introduced an accountability cue by making participants' screen-names more salient, and in Study 2, we used a webcam. Both studies indicate that, as expected, the bystander effect can be reversed by means of cues that raise public self-awareness in social settings.     

The formation of implicit and explicit attitudes for neutral and valenced stimuli using the self

In Evaluative Conditioning (EC) studies, novel Conditioned Stimuli (CSs) are usually selected so to be neutral. However, in real life, because of the tendency of humans to evaluate novel stimuli automatically, novel CSs are very often initially valenced. From the literature little is known on whether EC can be successful under these conditions. In this contribution we applied a specific EC paradigm, namely self-referencing (SR) task, to new fictitious social groups. We present three studies. The first preliminary study is a pretest for selecting novel CSs. We examined the valence of four fictitious novel groups with both direct (semantic differential) and indirect (IAT) measures. The results showed that one pair was neutral (Lerriani vs. Dattiani) and the other was valenced (Niffiani, CS+ vs. Duppiani, CS?). In the second and third studies, we applied the SR paradigm to the neutral and initially valenced CSs. The results revealed a significant EC effect on both indirect and direct measures, such that the groups associated with the self became more positive and the groups associated with the other became more negative. The effects were found for both neutral and initially valenced groups, therefore showing that neutrality is not a prerequisite for EC effects. If anything, the effects were stronger for the initially valenced groups, especially on the indirect measure. Results are discussed in light of the detection of EC effects for both neutral and initially valenced CSs.     

A brief review on the use of functional near-infrared spectroscopy (fNIRS) for language imaging studies in human newborns and adults

Upon stimulation, real time maps of cortical hemodynamic responses can be obtained by non-invasive functional near-infrared spectroscopy (fNIRS) which measures changes in oxygenated and deoxygenated hemoglobin after positioning multiple sources and detectors over the human scalp. The current commercially available transportable fNIRS systems have a time resolution of 1-10 Hz, a depth sensitivity of about 1.5 cm, and a spatial resolution of about 1 cm. The goal of this brief review is to report infants, children and adults fNIRS language studies. Since 1998, 60 studies have been published on cortical activation in the brain’s classic language areas in children/adults as well as newborns using fNIRS instrumentations of different complexity. In addition, the basic principles of fNIRS including features, strengths, advantages, and limitations are summarized in terms that can be understood even by non specialists. Future prospects of fNIRS in the field of language processing imaging are highlighted.     

Weak reciprocity alone cannot explain peer punishment

The claims about (1) the lack of empirical support for a model of strong reciprocation and (2) the irrelevant empirical role of costly punishment to support cooperation in the field need qualifications. The interpretation of field evidence is not straightforward, and other-regarding preferences are also likely to play a role in the field.     

Narrative, meaning, interpretation: an enactivist approach

After establishing its roots in basic forms of sensorimotor coupling between an organism and its environment, the new wave in cognitive science known as ??enactivism?? has turned to higher-level cognition, in an attempt to prove that even socioculturally mediated meaning-making processes can be accounted for in enactivist terms. My article tries to bolster this case by focusing on how the production and interpretation of stories can shape the value landscape of those who engage with them. First, it builds on the idea that narrative plays a key role in expressing the values held by a society, in order to argue that the interpretation of stories cannot be understood in abstraction from the background of storytelling in which we are always already involved. Second, it presents interpretation as an example of what Di Paolo et al. (2010) have called in their recent enactivist manifesto a ??joint process of sensemaking??: just like in face-to-face interaction, the recipient of the story collaborates with the authorial point of view, generating meaning. Third, it traces the meaning brought into the world by interpretation to the activation and, potentially, the restructuring of the background of the recipients of the story.