Blocked goals, persistent action: Implementation intentions engender tenacious goal striving

Research on goal attainment has demonstrated that people are more likely to reach their goals when they form implementation intentions. Three experiments tested whether implementation intentions lead to tenacious goal striving following blockage of an initial attempt to reach the goal. In all three experiments some participants were instructed to form an implementation intention and other participants were not. Subsequently, the initial goal-directed attempt of all participants was unexpectedly blocked. Experiment 1 found that implementation intentions resulted in more attempts to realize one’s goal. Experiment 2 showed that when participants formed an implementation intention their repeated attempt was acted out as intensely as their first, blocked attempt. Experiment 3 found that implementation intentions still allow people to seize an alternative, more onerous means to realize their intention. These results imply that implementation intention conserve self-regulatory strength. After goal blockage, the remaining strength can be used to continue goal-directed action.     

CONTESTING PYRRHONIAN CONTRASTIVISM

I air three kinds of problem to which Sinnott-Armstrong's epistemological contrastivism seems to be exposed: (a) the theory gives an unplausible account of justification attributions; (b) the Pyrrhonism which results from its inability to identify relevant contrast classes bars us from epistemic responsibility; (c) contextualism does just as well as Pyrrhonism, despite Sinnott-Armstrong's arguments to the contrary.     

“Could this happen to me?”: Threat‐related state orientation increases position identification with victims of random, “senseless” violence

Two experiments examined the role of threat‐related action‐state orientation in how observers become psychologically involved with victims of violence. Observing incidents of random, “senseless” violence is uniquely threatening to observers because they violate just world beliefs and appear like they could happen to anyone. Because stronger threat‐related state‐oriented individuals are less effective in down‐regulating such threats to the self, they should perceive stronger self‐concerned position identification (i.e., “this could happen to me”) when confronted with random, “senseless” violence. In contrast, no such effects should occur for observers' person identification (i.e., their other‐concerned empathy for the victim). The results of two experiments supported these ideas and ruled out potential alternative explanations based on individuals' just world beliefs, need for cognition, and their attribution strategies. We discuss the importance of threat‐related self‐regulation processes with regard to self‐ and other‐concerned mechanisms through which observers come to care for victims of violence. Copyright © 2008 John Wiley & Sons, Ltd.     

Multiple memory stores and operant conditioning: a rationale for memory's complexity

Why does the brain contain more than one memory system? Genetic algorithms can play a role in elucidating this question. Here, model animals were constructed containing a dorsal striatal layer that controlled actions, and a ventral striatal layer that controlled a dopaminergic learning signal. Both layers could gain access to three modeled memory stores, but such access was penalized as energy expenditure. Model animals were then selected on their fitness in simulated operant conditioning tasks. Results suggest that having access to multiple memory stores and their representations is important in learning to regulate dopamine release, as well as in contextual discrimination. For simple operant conditioning, as well as stimulus discrimination, hippocampal compound representations turned out to suffice, a counterintuitive result given findings that hippocampal lesions tend not to affect performance in such tasks. We argue that there is in fact evidence to support a role for compound representations and the hippocampus in even the simplest conditioning tasks.     

Dealing efficiently with emotions: acceptance-based coping with negative emotions requires fewer resources than suppression

Previous studies have consistently shown that changing or avoiding emotions requires resources and therefore leads to impaired performance on a subsequent self-control task. The aim of the present study was to investigate the extent to which acceptance-based coping requires regulatory resources. Participants who accepted their emotions during exposure to a sad video performed better on a subsequent self-control task than participants who were instructed to suppress their emotions and a control group who received no instructions. These findings suggest that acceptance is an efficient strategy in terms of resources.     

Degrading phonetic information affects matching of audiovisual speech in adults,but not in infants

Infants and adults are well able to match auditory and visual speech, but the cues on which they rely (viz. temporal, phonetic and energetic correspondence in the auditory and visual speech streams) may differ. Here we assessed the relative contribution of the different cues using sine-wave speech (SWS). Adults (N = 52) and infants (N = 34, age ranged in between 5 and 15 months) matched 2 trisyllabic speech sounds (‘kalisu’ and ‘mufapi’), either natural or SWS, with visual speech information. On each trial, adults saw two articulating faces and matched a sound to one of these, while infants were presented the same stimuli in a preferential looking paradigm. Adults’ performance was almost flawless with natural speech, but was significantly less accurate with SWS. In contrast, infants matched the sound to the articulating face equally well for natural speech and SWS. These results suggest that infants rely to a lesser extent on phonetic cues than adults do to match audio to visual speech. This is in line with the notion that the ability to extract phonetic information from the visual signal increases during development, and suggests that phonetic knowledge might not be the basis for early audiovisual correspondence detection in speech.