Children do show negative priming: further evidence for early development of an intact selective control mechanism

Reactions to stimuli that were shortly before presented as distractors are usually slowed down; this phenomenon is known as negative priming. Negative priming is an accepted index for tapping into selective control mechanisms. Although this effect is well established for adults, it has been claimed that children do not show negative priming. Recently, however, V. E. Pritchard and E. Neumann challenged this view and concluded that selective control mechanisms are already fully developed in young children. The authors of the present study analyzed differences between older studies, in which no negative priming had been observed, and the Pritchard and Neumann (2004) study. In sum, the present study yielded further evidence for an intact selective control mechanism in young children. The authors also linked this empirical finding to the broader literature on negative priming by a direct comparison with an adult sample.     

The absence of an auditory-visual attentional blink is not due to echoic memory

The second of two targets is often missed when presented shortly after the first target--a phenomenon referred to as the attentional blink (AB). Whereas the AB is a robust phenomenon within sensory modalities, the evidence for cross-modal ABs is rather mixed. Here, we test the possibility that the absence of an auditory-visual AB for visual letter recognition when streams of tones are used is due to the efficient use of echoic memory, allowing for the postponement of auditory processing. However, forcing participants to immediately process the auditory target, either by presenting interfering sounds during retrieval or by making the first target directly relevant for a speeded response to the second target, did not result in a return of a cross-modal AB. Thefindings argue against echoic memory as an explanation for efficient cross-modal processing. Instead, we hypothesized that a cross-modal AB may be observed when the different modalities use common representations, such as semantic representations. In support of this, a deficit for visual letter recognition returned when the auditory task required a distinction between spoken digits and letters.     

Multiple Mechanisms of Prime-to-Behavior Effects

Recent research has explored how the activation of social constructs via priming can affect behavior. Multiple mechanisms have received support, including direct activation of behavioral representations, goal activation, biases in person perception, biases in situation perception, and biases in self-perception. We review the evolving complexity of proposed prime-to-behavior mechanisms, discuss the predictions of each mechanism, and suggest some integrative principles that influence how and when primed constructs affect behavior.     

Naturalism and Intentionality: A Buddhist Epistemological Approach

In this paper I propose a naturalist account of the Buddhist epistemological discussion of svasa[mdot]vitti (‘self-awareness’, ‘self-cognition’) following similar attempts in the domains of phenomenology and analytic epistemology. First, I examine the extent to which work in naturalized epistemology and phenomenology, particularly in the areas of perception and intentionality, could be profitably used in unpacking the implications of the Buddhist epistemological project. Second, I argue against a foundationalist reading of the causal account of perception offered by Dignāga and Dharmakīrti. Finally, I argue that it is possible to read Dignāga's (and following him Dharmakīrti's) treatment of svasamvitti as offering something like a phenomenological account of embodied self-awareness.     

Empathy,social psychology,and global helping traits

The central virtue at issue in recent philosophical discussions of the empirical adequacy of virtue ethics has been the virtue of compassion. Opponents of virtue ethics such as Gilbert Harman and John Doris argue that experimental results from social psychology concerning helping behavior are best explained not by appealing to so-called ‘global’ character traits like compassion, but rather by appealing to external situational forces or, at best, to highly individualized ‘local’ character traits. In response, a number of philosophers have argued that virtue ethics can accommodate the empirical results in question. My own view is that neither side of this debate is looking in the right direction. For there is an impressive array of evidence from the social psychology literature which suggests that many people do possess one or more robust global character traits pertaining to helping others in need. But at the same time, such traits are noticeably different from a traditional virtue like compassion.

Impaired discriminative fear-conditioning resulting from elevated fear responding to learned safety cues among individuals with panic disorder

Classical fear-conditioning is central to many etiologic accounts of panic disorder (PD), but few lab-based conditioning studies in PD have been conducted. One conditioning perspective proposes associative-learning deficits characterized by deficient safety learning among PD patients. The current study of PD assesses acquisition and retention of discriminative aversive conditioning using a fear-potentiated startle paradigm. This paradigm was chosen for its specific capacity to independently assess safety- and danger learning in the service of characterizing putative anomalies in each type of learning among those with PD. Though no group difference in fear-potentiated startle was found at retention, acquisition results demonstrate impaired discriminative learning among PD patients as indexed by measures of conditioned startle-potentiation to learned safety and danger cues. Importantly, this discrimination deficit was driven by enhanced startle-potentiation to the learned safety cue rather than aberrant reactivity to the danger cue. Consistent with this finding, PD patients relative to healthy individuals reported higher expectancies of dangerous outcomes in the presence of the safety cue, but equal danger expectancies during exposure to the danger cue. Such results link PD to impaired discrimination learning, reflecting elevated fear responding to learned safety cues.