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241.
Representation facilitates reasoning: what natural frequencies are and what they are not 总被引:4,自引:0,他引:4
A good representation can be crucial for finding the solution to a problem. Gigerenzer and Hoffrage (Psychol. Rev. 102 (1995) 684; Psychol. Rev. 106 (1999) 425) have shown that representations in terms of natural frequencies, rather than conditional probabilities, facilitate the computation of a cause's probability (or frequency) given an effect--a problem that is usually referred to as Bayesian reasoning. They also have shown that normalized frequencies--which are not natural frequencies--do not lead to computational facilitation, and consequently, do not enhance people's performance. Here, we correct two misconceptions propagated in recent work (Cognition 77 (2000) 197; Cognition 78 (2001) 247; Psychol. Rev. 106 (1999) 62; Organ. Behav. Hum. Decision Process. 82 (2000) 217): normalized frequencies have been mistaken for natural frequencies and, as a consequence, "nested sets" and the "subset principle" have been proposed as new explanations. These new terms, however, are nothing more than vague labels for the basic properties of natural frequencies. 相似文献
242.
Classification of Planning and Violent Behaviours in Serial Homicide: A Cross‐National Comparison Between South Africa and the US
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Marina Sorochinski C. Gabrielle Salfati Gerard N. Labuschagne 《Journal of Investigative Psychology & Offender Profiling》2015,12(1):69-82
Recent literature suggests that different ‘styles’ of homicide will most appropriately be reflected in the different types of behaviours committed by offenders during the crime. In the last few years, there has been a move to standardise classification systems of single homicides and establish their cross‐national generalisability. Literature on serial homicide to date has mostly centred on homicides occurring in the US. However, national differences due to factors such as culture, national identity, political, and socio‐economic circumstances may decrease the applicability of these models or certain aspects thereof in other countries and thus must be evaluated. The present study tested the applicability in the South African context of a recently developed US‐based serial homicide crime scene classification framework. Specifically, this study compared the thematic differentiation in planning and violent behaviours that the offenders engage in and how this differentiation compares with that in the US. The sample consisted of 25 homicides that were in total responsible for the murder of 267 victims. Results indicated that overall, the framework is useful and applicable in the South African sample, but important environmental and contextual constraints must be taken into account. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
243.
Models of category learning have been extensively studied in cognitive science and primarily tested on perceptual abstractions or artificial stimuli. In this paper, we focus on categories acquired from natural language stimuli, that is, words (e.g., chair is a member of the furniture category). We present a Bayesian model that, unlike previous work, learns both categories and their features in a single process. We model category induction as two interrelated subproblems: (a) the acquisition of features that discriminate among categories, and (b) the grouping of concepts into categories based on those features. Our model learns categories incrementally using particle filters, a sequential Monte Carlo method commonly used for approximate probabilistic inference that sequentially integrates newly observed data and can be viewed as a plausible mechanism for human learning. Experimental results show that our incremental learner obtains meaningful categories which yield a closer fit to behavioral data compared to related models while at the same time acquiring features which characterize the learned categories. (An earlier version of this work was published in Frermann and Lapata 2014 .) 相似文献
244.
Paul Stevens 《International journal of psychology》2014,49(1):51-55
Research into the perceived restorativeness of environments tends to focus on the Kaplans' Attention Restoration Theory at the expense of the affective considerations of Ulrich's psychoevolutionary model. To better understand the role of emotion, this study used contextual text‐based primers (newspaper articles) to manipulate participants' affective state (positive or negative) prior to them rating different environments using the Restorative Components Scale. Sixty‐nine participants completed the web‐based study, being pseudo‐randomly allocated to the positive‐ or negative‐prime condition before rating three natural and three urban environments. Natural environments were rated as more restorative than urban, with negative‐priming giving higher mean ratings for all environments. This effect was overall statistically significant for two components (Being Away and Fascination), but only Fascination showed a significant interaction of affective‐prime and environment, a larger effect being seen for natural environments. Results are discussed in terms of current understanding of the interrelationship between attentional and affective processes. 相似文献
245.
246.
The collection of very large text sources has revolutionized the study of natural language, leading to the development of several models of language learning and distributional semantics that extract sophisticated semantic representations of words based on the statistical redundancies contained within natural language (e.g., Griffiths, Steyvers, & Tenenbaum, 2007 ; Jones & Mewhort, 2007 ; Landauer & Dumais, 1997 ; Mikolov, Sutskever, Chen, Corrado, & Dean, 2013 ). The models treat knowledge as an interaction of processing mechanisms and the structure of language experience. But language experience is often treated agnostically. We report a distributional semantic analysis that shows written language in fiction books varies appreciably between books from the different genres, books from the same genre, and even books written by the same author. Given that current theories assume that word knowledge reflects an interaction between processing mechanisms and the language environment, the analysis shows the need for the field to engage in a more deliberate consideration and curation of the corpora used in computational studies of natural language processing. 相似文献
247.
248.
Lucy Markson Jessica Woodhams John W. Bond 《Journal of Investigative Psychology & Offender Profiling》2010,7(2):91-107
Whilst case linkage is used with serious forms of serial crime (e.g. rape and murder), the potential exists for it to be used with volume crime. This study replicates and extends previous research on the behavioural linking of burglaries. One hundred and sixty solved residential burglaries were sampled from a British police force. From these, 80 linked crime pairs (committed by the same serial offender) and 80 unlinked crime pairs (committed by two different serial offenders) were created. Following the methodology used by previous researchers, the behavioural similarity, geographical proximity, and temporal proximity of linked crime pairs were compared with those of unlinked crime pairs. Geographical and temporal proximity possessed a high degree of predictive accuracy in distinguishing linked from unlinked pairs as assessed by logistic regression and receiver operating characteristic analyses. Comparatively, other traditional modus operandi behaviours showed less potential for linkage. Whilst personality psychology literature has suggested we might expect to find a relationship between temporal proximity and behavioural consistency, such a relationship was not observed. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
249.
Jamal K. Mansour Claire M. Hamilton Matthew T. Gibson 《Applied cognitive psychology》2019,33(6):991-1007
We examined the role of exposure duration and scene complexity on the weapon focus effect (WFE). Memory for the mock crime was affected more by a weapon than an unusual but nonthreatening object. Threat reduced correct identifications when the event was short but not long; duration of the event did not interact with unusualness. Additionally, we found a WFE for target‐absent lineup decisions, but only for the accomplice lineup, not the object‐wielding perpetrator's lineup. We discuss the implications of these results for illuminating the mechanisms that elicit the WFE. 相似文献
250.
Luisa C. Busch de Ahumada 《The International journal of psycho-analysis》2003,84(2):291-313
This clinical presentation describes the therapeutic process of a 5-year-old male child presenting as a main symptom quasi-delusional feminine enactments starting at an early age, which persisted for most of his five-year treatment. This symptom was understood in terms of an attempt at restitution, itself the result of being confronted with an autistic structure stemming from a series of traumatic incidents during the oral phase: his mother's pregnancy, abortion, depression and subsequent three-month absence at the end of his first year of life. The clinical material, drawings included, illustrates the interplay of oral, anal and phallic levels, with enactment predominant in sessions. The oral traumatic situation initially led to anal-manic play, then to quasi-delusional female personifications in sessions, later surfacing as an annihilating 'black hole'. All the above issued into a broad enacted phallic-genital unfolding that dramatised an oral-genital primal scene, in the course of which he managed to structure his male identity. Near the end of the analytic process the analysand reworked the 'stages' of the link to the analyst. To end, based on the clinical material, the respective participation of the early and the late Oedipus complex is examined. 相似文献