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191.
The aim of the present study was to demonstrate the efficacy of combining two operant learning procedures—shaping and fading—for treating selective mutism. The participant was a 12-year-old boy with mental retardation presenting a severe long-term selective mutism. The treatment was aimed at increasing the loudness of his vocalizations in an increasingly social milieu. The treatment was conducted over the course of about 20 weeks, with four 15-minute sessions per week. A gradual increase in speech loudness was observed. Data indicated a close correspondence between the changes in speech loudness and the criteria for reinforcement successively applied by the therapist, thereby confirming the causal link between the child's progress and the changes in reinforcement contingencies. In addition, good generalization was noted during the stimulus fading phase. Six-month follow up showed that loudness of verbalizations was still satisfactory in the classroom despite a change of school and peer group. The impressive improvement of the child's verbal behavior shows that the implementation of a treatment package including both shaping and stimulus fading is a worthwhile therapeutic option, even in the case of severe long-term selective mutism associated with mental retardation. 相似文献
192.
Marie‐Paule Lecoutre Jacques Poitevineau Bruno Lecoutre 《International journal of psychology》2003,38(1):37-45
We investigated the way experienced users interpret Null Hypothesis Significance Testing (NHST) outcomes. An empirical study was designed to compare the reactions of two populations of NHST users, psychological researchers and professional applied statisticians, when faced with contradictory situations. The subjects were presented with the results of an experiment designed to test the efficacy of a drug by comparing two groups (treatment/placebo). Four situations were constructed by combining the outcome of the t test (significant vs. nonsignificant) and the observed difference between the two means D (large vs. small). Two of these situations appeared as conflicting (t significant/D small and t nonsignificant/D large). Three fundamental aspects of statistical inference were investigated by means of open questions: drawing inductive conclusions about the magnitude of the true difference from the data in hand, making predictions for future data, and making decisions about stopping the experiment. The subjects were 25 statisticians from pharmaceutical companies in France, subjects well versed in statistics, and 20 psychological researchers from various laboratories in France, all with experience in processing and analyzing experimental data. On the whole, statisticians and psychologists reacted in a similar way and were very impressed by significant results. It must be outlined that professional applied statisticians were not immune to misinterpretations, especially in the case of nonsignificance. However, the interpretations that accustomed users attach to the outcome of NHST can vary from one individual to another, and it is hard to conceive that there could be a consensus in the face of seemingly conflicting situations. In fact, beyond the superficial report of “erroneous” interpretations, it can be seen in the misuses of NHST intuitive judgmental “adjustments” that try to overcome its inherent shortcomings. These findings encourage the many recent attempts to improve the habitual ways of analyzing and reporting experimental data. 相似文献
193.
Bruno Vanobbergen 《Studies in Philosophy and Education》2004,23(2-3):161-176
Today childhood takes place within amultimedia context where education, marketingand entertainment operate together in one bigmelting pot. Childhood is commodified, asituation not everybody seems happy with. Dueto increasing exposure with violence and sexualactivities, for example in children's games,children seem to lose the chance to be realchildren. In the discussions about thiscommodified childhood, innocence and nostalgiaseem omnipresent concepts. In this article wefirst analyse the discourse about the innocenceof childhood as presented by Neil Postman inhis bestseller ``The Disappearance ofChildhood.'' Here, childhood is seen as a periodwhich can mainly be characterised in terms of a``not yet.'' However, Postman's view on childhoodpresents only one side of the romanticcontinuum. The other side – in which the childappears as having a nature of her own – can beillustrated by ``On naïve and sentimentalpoetry,'' an essay written by Friedrich Schillerin 1795. Both opposing views on childhood canlead to a different interpretation of theinnocence of childhood. Finally, Schiller'sdichotomy – the naïve versus thesentimental poet – can be seen as a useful legup to the clarification of nostalgia whichseems to go hand in hand with the feeling ofthe loss of (one's own) childhood. 相似文献
194.
Bruno Rossion 《Acta psychologica》2009,132(3):300-16896
I published a critical review of the face inversion effect (Rossion, 2008) that triggered a few reactions and commentaries by colleagues in the field (
[Riesenhuber and Wolff, 2009] and [83]). Here, I summarize my original paper and attempt to identify the source of both the agreements and disagreements with my colleagues, as well as other authors, regarding the nature of the face inversion effect. My view is that the major cause of the detrimental effect of inversion on an observer’s performance at individual face recognition is the disruption of a perceptual process. This perceptual process is makes and observer see the multiple features of a whole individual upright face at once. It also makes the percept of a given facial feature highly dependent on the location and identity of the other features in the whole face. The perceptual process is holistic because it is driven by a holistic face representation, derived from visual experience. Hence, an inverted face cannot be perceived holistically: the perceptual field of the observer is constricted for inverted faces, each facial feature having to be processed sequentially, independently, i.e. over a smaller spatial window than the whole face. Consequently, it is particularly difficult to perceive diagnostic cues that involve several elements over a wide space on an inverted face, such as long-range relative distances between features (e.g., relative distance between eyes and mouth), or diagnostic cues that are located far away from usual gaze fixation (e.g., mouth-nose distance or mouth shape when fixating between the eyes). These difficulties are mere consequences of face inversion - the cause being a loss of holistic perception-, and it does not follow that relative distances between internal features are necessarily particularly important to recognize faces, that they should be labeled “configural”, or should be given a specific status at the representational level. I argue that distinguishing the cause and consequence(s) of face inversion this way can provide a parsimonious and yet complete theoretical account of the face inversion effect. 相似文献
195.
Most methods for detecting differential item functioning (DIF) are suitable when the sample sizes are sufficiently large to validate the null statistical distributions. There is no guarantee, however, that they will still perform adequately when there are few respondents in the focal group or in both the reference and the focal group. Angoff's delta plot is a potentially useful alternative for small-sample DIF investigation, but it suffers from an improper DIF flagging criterion. The purpose of this paper is to improve this classification rule under mild statistical assumptions. This improvement yields a modified delta plot with an adjusted DIF flagging criterion for small samples. A simulation study was conducted to compare the modified delta plot with both the classical delta plot approach and the Mantel-Haenszel method. It is concluded that the modified delta plot is consistently less conservative and more powerful than the usual delta plot, and is also less conservative and more powerful than the Mantel-Haenszel method as long as at least one group of respondents is small. 相似文献
196.
Bruno Thomann 《Behavior research methods》2001,33(3):339-348
In a sequence from a videotaped dialogue between two persons (e.g., psychotherapist and patient), observers are given the task of searching for, marking, and commenting on conspicuous events. The observers receive no information on where to look for conspicuous events and no information on what events are worth marking. Moreover, nothing is known about the observers’ marking preferences. Marking is therefore very spontaneous and subjective. This marking freedom leads to the problem that a superimposition of all observers’ markings yields complicated configurations of mutually overlapping intervals. To address this difficulty, a new definition of the concept of marking agreement is proposed that is based upon relational considerations. According to this definition, a set ofagreeing marking subsets of various sizes can be found in marking configurations. A significance concept is proposed to allow comparison of different configurations, and standardization on the basis of random configurations is performed using Monte Carlo simulations. 相似文献
197.
In this article, a framework is suggested to deal with the analysis of global environmental risk governance. Climate Change
is taken as a particular form of contemporary environmental risk, and mobilised to refine and characterize some salient aspects
of new governance challenges. A governance framework is elaborated along three basic features: (1) a close relationship with
science, (2) an in-built reflexivity, and (3) forms of governmentality. The UNFCCC-centered system is then assessed according
to this three-tier framework. While the two-first requisites are largely met, the analysis of governmentality points to some
institutional weak spots. 相似文献
198.
199.
Tony Ro Neel S. Singhal Bruno G. Breitmeyer Javier O. Garcia 《Attention, perception & psychophysics》2009,71(1):95-103
Three experiments employed a metacontrast masking procedure to examine the extent and nature of priming effects from visual stimuli not consciously perceived. The results showed effects of unconscious stimuli on subsequent target responses that (1) were more consistent, reliable, and not subject to strategic control, as compared with consciously perceived stimuli (Experiment 1); (2) produced both facilitation and interference of subsequent processing (Experiment 2); and (3) did not influence indirect response-related levels of processing (Experiment 3). These results demonstrate that color and form attributes of unconscious stimuli are sufficiently registered within the visual system to influence behavior, and that some of these unconscious effects occur at early levels of stimulus encoding, prior to higher level perceptual and response-related processes. 相似文献
200.
Hulusi Kafaligönül Bruno G. Breitmeyer Haluk Öğmen 《Attention, perception & psychophysics》2009,71(7):1576-1587
The visibility of a target stimulus can be suppressed (inhibition) or increased (facilitation) during paracontrast masking. Three processes have been proposed to be involved in paracontrast masking: brief inhibition, facilitation, and prolonged inhibition (Breitmeyer et al., 2006). Brief inhibition is observed when the mask precedes the target at short stimulus onset asynchronies (SOAs) ranging from -10 to -30 msec, whereas prolonged inhibition is effective up to very large SOAs of -450 msec. Facilitation, enhancement in target visibility, can be observed at SOA values between -20 and -110 msec. We further investigated these processes by changing target-mask spatial separation and the contrast polarity of the mask. Our results show that (1) facilitation weakens when spatial separation between the target and mask is increased or when they have opposite contrast polarity, and (2) brief inhibition turns into facilitation for the opposite-polarity mask, whereas prolonged inhibition does not change significantly. These results suggest a fast inhibition mechanism realized in the contrast-specific center-surround antagonism of classical receptive fields for brief inhibition and a slower, higher level cortical processing that is indifferent to contrast polarity for prolonged inhibition. 相似文献