Semantic feature activation takes time: longer SOA elicits earlier priming effects during reading

Cognitive Processing - While most previous studies of “semantic” priming confound associative and semantic relations, here we use a simple co-occurrence-based approach to examine...     

Separating the wheat from the chaff: does discriminating between diagnostic and nondiagnostic information eliminate the dilution effect?

The dilution effect refers to the finding that judgments are often unduly influenced by nondiagnostic information, producing regressive judgment. Because the dilution effect is a problem in various domains, strategies to control the impact of nondiagnostic information were explored by drawing on a perceptual and a conversational account of the dilution effect. Three experiments (n = 259) demonstrate that explicit instructions to discriminate between diagnostic and nondiagnostic information did not reduce the dilution effect. Rather, consistent with a perceptual explanation but not consistent with a conversational explanation, the dilution effect disappeared only when participants engage in perceptual control, that is, when they actively remove nondiagnostic pieces of information before making a judgment. Copyright © 2004 John Wiley & Sons, Ltd.     

Stimulus–response bindings contribute to item switch costs in working memory

In counter updating tasks, responses are typically faster when items repeat than when they change (item switch costs). The present study explored the contribution of stimulus–response bindings to these item switch costs. In two experiments, we orthogonally manipulated the repetition/switch of to-be-counted items and the repetition/switch of required manual responses. Item switch costs were considerably lower when item switches were accompanied by response switches than when accompanied by response repetitions. Experiment 2 showed that, although there was also a smaller contribution from stimulus–stimulus bindings (i.e., shape-location), the major part was due to stimulus-response bindings. These results show that in the widely used standard version of the counter updating task, a considerable portion of item switch costs is caused by the unbinding of stimulus–response bindings rather than by processes of switching items in working memory.     

Descartes discarded? Introspective self-awareness and the problems of transparency and compositionality

What has the self to be like such that introspective awareness of it is possible? The paper asks if Descartes’s idea of an inner self can be upheld and discusses this issue by invoking two principles: the phenomenal transparency of experience and the semantic compositionality of conceptual content. It is assumed that self-awareness is a second-order state either in the domain of experience or in the domain of thought. In the former case self-awareness turns out empty if experience is transparent. In the latter, it can best be conceived of as a form of mental quotation. Various proposed analyses of direct and indirect quotation are discussed and tested regarding their applicability to thought. It is concluded that, on the assumption of compositionality, the inner self is only insofar accessible to awareness as it has an accessible phonological (or otherwise subsymbolic) structure, as apparently only inner speech does.     

The human parahippocampal cortex subserves egocentric spatial learning during navigation in a virtual maze

BackgroundPresent evidence suggests that the hippocampus (HC) and the parahippocampal cortex (PHC) are involved in allocentric (world-centered) spatial memory. However, the putative role of the PHC in egocentric (body-centered) spatial learning has received only limited systematic investigation.MethodsTo examine the role of the PHC in egocentric learning, 19 healthy volunteers learned to find their way in a virtual maze during functional magnetic resonance imaging (fMRI). The virtual maze presented a first-person view, lacked any topographical landmarks and could be learned only using egocentric navigation strategies.ResultsDuring learning, increased medial temporal lobe activity was observed in the PHC bilaterally. Activity was also observed in cortical areas known to project to the PHC and proposed to contribute to egocentric spatial navigation and memory.ConclusionsOur results point to a role of the PHC for the representation and storage of egocentric information. It seems possible that the PHC contributes to egocentric memory by its feedback projections to the posterior parietal cortex. Moreover, access to allocentric and egocentric streams of spatial information may enable the PHC to construct a global and comprehensive representation of spatial environments and to promote the construction of stable cognitive maps by translating between egocentric and allocentric frames of memory.     

Testing the theory of embodied cognition with subliminal words

In the current study, we tested the embodied cognition theory (ECT). The ECT postulates mandatory sensorimotor processing of words when accessing their meaning. We test that prediction by investigating whether invisible (i.e., subliminal) spatial words activate responses based on their long-term and short-term meaning. Masking of the words is used to prevent word visibility and intentional elaboration of the words’ semantic content. In this way, masking specifically isolates mandatory sensorimotor processing of words as predicted by the ECT. Do spatial subliminal words activate responses nonetheless? In Experiment 1, we demonstrate a spatial congruence effect of the invisible words if they precede visible target words. In Experiment 2, we show that masked words activate responses based on their long-term meaning. In Experiment 3, we demonstrate that masked words are also processed according to their short-term response meaning. We conclude that the ECT is supported by our findings and discuss implications of our results for embodied theories of semantic word processing and masked priming experiments.     

Skin picking in patients with obesity: Associations with impulsiveness and self‐harm

Previous studies suggest elevated prevalence rates of skin picking and self‐harm in patients with obesity compared to individuals in the general population. Hence, further studies should investigate prevalence rates and correlates of skin picking in this population – especially its differentiation to self‐harm. Skin picking and obesity are both associated with specific facets of impulsiveness. This relation should be explored to shed light on potentially shared mechanisms in etiology. Therefore, the present study examined the occurrence of skin picking and its associations with impulsiveness and self‐harm in a sample of pre‐bariatric surgery patients with obesity class II/III. Within the routine preoperative psychiatric evaluation, a total of 139 bariatric surgery candidates (78% female, BMI range 35–69) completed a self‐report questionnaire assessing sociodemographic variables, anxiety, depression, self‐harm, impulsiveness, and skin picking severity (urges: frequency, intensity, controllability; behavior: frequency, intensity, controllability; resistance, emotional distress, impairment, and avoidance). Ten participants (7.2% of the sample) reported recurrent skin picking leading to skin damage, repeated attempts to decrease skin picking, and psychosocial impairment (emotional distress, impairment in functional areas, avoidance) due to skin picking. In line with previous findings, skin picking severity shows a medium correlation with attentional impulsiveness. The majority of self‐harm types were not associated with skin picking severity. The current study reveals a high occurrence of skin picking compared to the general population. The results indicate an association between skin picking severity and attentional impulsiveness. Further research is needed to investigate the differentiation of skin picking and self‐harm in more detail.     

(Not) Thinking about you: Differences in victims’ and perpetrators’ self-focus after interpersonal and intergroup transgressions

We tested the hypothesis that, following a transgression, victims and perpetrators differ in their focus of attention. In three studies (total N = 740), we manipulated participants’ social role (victim vs. perpetrator) in a hypothetical scenario (Studies 1 and 2) and in a perceived real conflict (Study 3) in an interpersonal (Studies 1 and 2) and an intergroup (Study 3) context. Results from all studies confirmed that victims show a stronger self-focus than perpetrators. Moreover, results suggest victims’ higher self-focus as a predictor of willingness to reconcile. Participants’ self-focus mediated the effect of social role on reconciliation intentions as a single mediator (Study 2), or in sequence with their motivation to consider the other party's needs (Study 3). Overall, the present research suggests that victims and perpetrators differ in their focus of attention, and that this difference has important theoretical and practical implications for reconciliation between individuals and between groups.     

Why Does the Risen Christ Have Scars? Why God did not immediately create the Eschaton: Goodness,Truth and Beauty

Abstract: A consideration of God's providential activity suggests that there is room for co‐operating human activity. This is particularly so with acts that might be considered ethically neutral, and so undetermined by God, which category will, eschatalogically, include all human acts. A consideration of the classical transcendentals suggests that, whilst truth and goodness may coincide, beauty is something separate, so the ethically neutral acts of human beings can be considered as contributing to the world's eschatological beauty.