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Both positive and negative testing effects have been demonstrated with a variety of materials and paradigms (Roediger & Karpicke, 2006b). The present series of experiments replicate and extend the research of Roediger and Marsh (2005) with the addition of a "none-of-the-above" response option. Participants (n=32 in both experiments) read a set of passages, took an initial multiple-choice test, completed a filler task, and then completed a final cued-recall test (Experiment 1) or multiple-choice test (Experiment 2). Questions were manipulated on the initial multiple-choice test by adding a "none-of-the-above" response alternative (choice "E") that was incorrect ("E" Incorrect) or correct ("E" Correct). The results from both experiments demonstrated that the positive testing effect was negated when the "none-of-the-above" alternative was the correct response on the initial multiple-choice test, but was still present when the "none-of-the-above" alternative was an incorrect response. 相似文献
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Disgust sensitivity has recently been implicated as a specific vulnerability factor for several anxiety-related disorders. However, it is not clear whether disgust sensitivity is a dimensional or categorical phenomenon. The present study examined the latent structure of disgust by applying three taxometric procedures (maximum eigenvalue, mean above minus below a cut, and latent-mode factor analysis) to data collected from 2 large nonclinical samples on 2 different measures of disgust sensitivity. Disgust sensitivity in the first sample (n=1,153) was operationalized by disgust reactions to food, animals, body products, sex, body envelope violations, death, hygiene, and sympathetic magic, as assessed by the Disgust Sensitivity Scale (J. Haidt, C. McCauley, & P. Rozin, 1994). Disgust Sensitivity Scale indicators of core, animal reminder, and contamination disgust were also examined in the 1st sample. Disgust sensitivity in the 2nd independent sample (n=1,318) was operationalized by disgust reactions to animals, injections and blood draws, mutilation and death, rotting foods, and odors, as assessed by the Disgust Emotion Scale (R. A. Kleinknecht, E. E. Kleinknecht, & R. M. Thorndike, 1997). Results across both samples provide converging evidence that disgust sensitivity is best conceptualized as a dimensional construct, present to a greater or lesser extent in all individuals. These findings are discussed in relation to the conceptualization and assessment of disgust sensitivity as a specific dimensional vulnerability for certain anxiety and related disorders. 相似文献
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We report a new study testing our proposal that word learning may be best explained as an approximate form of Bayesian inference (Xu & Tenenbaum, in press). Children are capable of learning word meanings across a wide range of communicative contexts. In different contexts, learners may encounter different sampling processes generating the examples of word-object pairings they observe. An ideal Bayesian word learner could take into account these differences in the sampling process and adjust his/her inferences about word meaning accordingly. We tested how children and adults learned words for novel object kinds in two sampling contexts, in which the objects to be labeled were sampled either by a knowledgeable teacher or by the learners themselves. Both adults and children generalized more conservatively in the former context; that is, they restricted the label to just those objects most similar to the labeled examples when the exemplars were chosen by a knowledgeable teacher, but not when chosen by the learners themselves. We discuss how this result follows naturally from a Bayesian analysis, but not from other statistical approaches such as associative word-learning models. 相似文献
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The recently proposed error-likelihood hypothesis suggests that anterior cingulate cortex (ACC) and surrounding areas will
become active in proportion to the perceived likelihood of an error. The hypothesis was originally derived from a computational
model prediction. The same computational model now makes a further prediction that ACC will be sensitive not only to predicted
error likelihood, but also to the predicted magnitude of the consequences, should an error occur. The product of error likelihood
and predicted error consequence magnitude collectively defines the general “expected risk” of a given behavior in a manner
analogous but orthogonal to subjective expected utility theory. New fMRI results from an incentive change signal task now
replicate the errorlikelihood effect, validate the further predictions of the computational model, and suggest why some segments
of the population may fail to show an error-likelihood effect. In particular, error-likelihood effects and expected risk effects
in general indicate greater sensitivity to earlier predictors of errors and are seen in risk-averse but not risktolerant individuals.
Taken together, the results are consistent with an expected risk model of ACC and suggest that ACC may generally contribute
to cognitive control by recruiting brain activity to avoid risk. 相似文献
317.
PyEPL (the Python Experiment-Programming Library) is a Python library which allows cross-platform and object-oriented coding of behavioral experiments. It provides functions for displaying text and images onscreen, as well as playing and recording sound, and is capable of rendering 3-D virtual environments forspatial-navigation tasks. It is currently tested for Mac OS X and Linux. It interfaces with Activewire USB cards (on Mac OS X) and the parallel port (on Linux) for synchronization of experimental events with physiological recordings. In this article, we first present two sample programs which illustrate core PyEPL features. The examples demonstrate visual stimulus presentation, keyboard input, and simulation and exploration of a simple 3-D environment. We then describe the components and strategies used in implementing PyEPL. 相似文献
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Matthew Vess Rebecca J. Schlegel Joshua A. Hicks Jamie Arndt 《Journal of personality》2014,82(3):213-224
The current research examined how true self‐conceptions (who a person believes he or she truly is) influence negative self‐relevant emotions in response to shortcomings. In Study 1 (N = 83), an Internet sample of adults completed a measure of authenticity, reflected on a shortcoming or positive life event, and completed state shame and guilt measures. In Study 2 (N = 49), undergraduates focused on true versus other determined self‐attributes, received negative performance feedback, and completed state shame and guilt measures. In Study 3 (N = 138), undergraduates focused on self‐determined versus other determined self‐aspects, reflected on a shortcoming or neutral event, and completed state shame, guilt, and self‐esteem measures. In Study 4 (N = 75), undergraduates thought about true self‐attributes, an achievement, or an ordinary event; received positive or negative performance feedback; and completed state shame and guilt measures. In Study 1, differences in true self‐expression positively predicted shame‐free guilt (but not guilt‐free shame) following reminders of a shortcoming. Studies 2–4 found that experimental activation of true self‐conceptions increased shame‐free guilt and generally decreased guilt‐free shame in response to negative evaluative experiences. The findings offer novel insights into true self‐conceptions by revealing their impact on negative self‐conscious emotions. 相似文献
320.
Michael L. Slepian Masanori Oikawa Joshua M. Smyth 《Journal of applied social psychology》2014,44(1):31-39
Thought suppression can cause ironic increases in the occurrence of intrusive thoughts. Intrusive thoughts of evaluation could be especially disruptive while undergoing evaluation. Such a context, however, could help suppression efforts as the context provides an external source for which to attribute suppression failures. When suppressing thoughts of evaluation in a non‐evaluative context (a context‐content mismatch), typical ironic effects of thought suppression occurred. There was no increased accessibility of evaluation, however, when suppressing evaluation in an evaluative context (a context‐content match), which allowed for attributing intrusive thoughts to the context, rather than the self, making suppression easier. Suppressing thoughts of evaluation may be beneficial in an evaluative context, suggesting that the consequences of willful suppression are moderated by context. 相似文献