Timing relations in speech and the identification of voice-onset times: a stable perceptual boundary for voicing categories across speaking rates

This study shows that the ratio of voice onset time (VOT) to syllable duration for /t/ and /d/ presents distributions with a stable boundary across speaking rates and that this boundary constitutes a perceptual criterion by which listeners judge the category affiliation of VOT. In Experiment 1, best-fit regression lines for VOT ratios of intervocalic /t/ and /d/ against speaking rate had zero slopes, and there was an inferable boundary between the distributions. In Experiment 2, listeners' identifications of syllable-initial stops conformed to this boundary ratio. In Experiment 3, VOT was held constant, while VOT ratios were altered by modifying the duration of the following vowel. As VOT ratios exceeded the boundary estimated from the data of Experiment 1, listeners' identifications shifted from /d/ to /t/. Timing relations in speech production can determine the identification of voicing categories across speaking rates.     

Social Status and the Academic Achievement Gap: A Social Dominance Perspective

In this paper we sketch several mechanisms by which low social status is transformed into low academic performance. Using the perspective of social dominance theory, we review three processes by which this transformation takes place. These processes include: (a) the effects of lower economic, cultural, and social capital; (b) the effects of personal and institutional discrimination; and (c) reactions to low social status by members of low status groups. It is argued that members of low status groups engage in various protective mechanisms in response to their low social status. Although these mechanisms have the benefit of protecting self-esteem, this benefit is purchased at a potential cost. This cost includes reduced motivation to succeed which results in lower academic achievement and subsequent reinforcement of the status hierarchy. We argue that future research needs to place substantially more effort into precisely understanding the numerous, and often subtle, mediating mechanisms transforming low social status into low academic achievement. This revised version was published online in August 2006 with corrections to the Cover Date.     

Inhibitory control in mind and brain: an interactive race model of countermanding saccades

The stop-signal task has been used to study normal cognitive control and clinical dysfunction. Its utility is derived from a race model that accounts for performance and provides an estimate of the time it takes to stop a movement. This model posits a race between go and stop processes with stochastically independent finish times. However, neurophysiological studies demonstrate that the neural correlates of the go and stop processes produce movements through a network of interacting neurons. The juxtaposition of the computational model with the neural data exposes a paradox-how can a network of interacting units produce behavior that appears to be the outcome of an independent race? The authors report how a simple, competitive network can solve this paradox and provide an account of what is measured by stop-signal reaction time.     

Inducing an interpretation bias changes self-imagery: a preliminary investigation

Prior work suggests that variations in self-imagery can influence the emotional interpretations people make about social situations. The current experiment investigated the converse possibility: that inducing an inferential bias can change the content of self-related images. The effects of repeated practice in accessing either negative or positive social outcomes was tested by having participants report on self-images generated during subsequent experience with ambiguous social situations. Participants and independent judges rated the content of participants’ self-images as being more negative after prior practice in accessing negative rather than positive social outcomes. Furthermore, participants who practiced accessing negative outcomes rated their anticipated anxiety in an imagined stressful social situation as being greater, and their expected social performance as poorer than participants in the positive outcome group. Groups did not differ in state anxiety levels when making their ratings, so it is unlikely that any observed differences between groups can be attributed to mood effects. We suggest that this finding is consistent with the hypothesis that inferential biases and content of self-images can interact with each other and may together serve to maintain social anxiety.     

Facilitating a benign interpretation bias in a high socially anxious population

Previous research has shown that high socially anxious individuals lack the benign interpretation bias present in people without social anxiety. The tendency of high socially anxious people to generate more negative interpretations may lead to anticipated anxiety about future social situations. If so, developing a more benign interpretation bias could lead to a reduction in this anxiety. The current study showed that a benign interpretation bias could be facilitated (or 'trained') in a high socially anxious population. Participants in the benign training groups had repeated practice in accessing benign (positive or non-negative) interpretations of potentially threatening social scenarios. Participants in the control condition were presented with the same social scenarios but without their outcomes being specified. In a later recognition task, participants who received benign interpretation training generated more benign, and less negative, interpretations of new ambiguous social situations compared to the control group. Participants who received benign training also predicted that they would be significantly less anxious in a future social situation than those in the control group. Possible implications of the findings for therapeutic interventions in social phobia are discussed.     

‘You Wouldn’t have Your Granny Using Them’: Drawing Boundaries Between Acceptable and Unacceptable Applications of Civil Drones

Some industry and policy actors are concerned about public opposition to civil drones, in particular because of their association with military drones. However, very little is understood about public reactions to the technology. Strategies to ‘manage public acceptance’ have so far relied upon several untested assumptions. We conducted public engagement activities to explore citizens’ visions of civil drones. Several insights counteracted the prevailing assumptions. Rejecting the notion of blanket support for or opposition to civil drones, we found that citizens make nuanced decisions about the acceptability of civil drones depending upon the purpose of the flight and the actors involved. The results are positioned in support for calls to strengthen the role of citizens in civil drone development and, in particular, to shift away from the current focus on citizens’ acceptance of civil drone development towards the development of civil drones that are acceptable to citizens.     

Testing the basic socio‐structural assumptions of social identity theory in the gender context: Evidence from correlational studies on women's leadership

Given negative social identity, different perceptions of the structure of an intergroup relation (i.e., stability, legitimacy, permeability) should be related to different identity‐management strategies (i.e., social competition, social creativity, or individual mobility) depending on group identification. This is among the basic tenets of social identity theory (SIT). There is surprisingly little empirical support for these postulates in the context of one of the most central group identities: gender. Using a sample of women in leadership positions in Spain (N = 649), we tested relations between structural perceptions and identity‐management strategies in a pilot study. Structural equation modeling yielded empirical support regarding social competition, but little for social creativity or individual mobility. Identity‐management strategies were related to one organizational outcome (i.e., identification with the organization). The preregistered main study is intended to replicate and extend these findings using a different sample while improving several of the measures used.     

The fit between dignity self‐construal and independent university norms: Effects on university belonging,well‐being,and academic success

Universities struggle with students’ low well‐being and high dropout rates. High (compared to low) fit between students’ self‐construal and perceived university norms might help to prevent these problems. A strong dignity self‐construal (i.e., the understanding that one's worth is independent of others) is adaptive if university norms stress independence. The more a university norm is perceived as stressing independence, the better the fit for students with a strong (vs. weak) dignity self‐construal. Thus, if students with a strong dignity self‐construal perceive a university norm as stressing independence, they should develop a greater sense of belonging to the university and, in turn, experience higher well‐being, more motivation, and lower dropout intention. A longitudinal study with two measurement points conducted with students from 18 universities (N = 719) provided support for these predictions. This underlines the relevance of the fit between student and (perceived) school characteristics for the higher education sector.     

Impact of negation salience and cognitive resources on negation during attitude formation

Because of the increased cognitive resources required to process negations, past research has shown that explicit attitude measures are more sensitive to negations than implicit attitude measures. The current work demonstrated that the differential impact of negations on implicit and explicit attitude measures was moderated by (a) the extent to which the negation was made salient and (b) the amount of cognitive resources available during attitude formation. When negations were less visually salient, explicit but not implicit attitude measures reflected the intended valence of the negations. When negations were more visually salient, both explicit and implicit attitude measures reflected the intended valence of the negations, but only when perceivers had ample cognitive resources during encoding. Competing models of negation processing, schema-plus-tag and fusion, were examined to determine how negation salience impacts the processing of negations.