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951.
D. J. K. Mewhort Elizabeth E. Johns Shannon Coble 《Attention, perception & psychophysics》1991,50(3):258-266
In studies of iconic memory using the bar-probe task, subjects see a brief display of target letters and are probed by an arrow to report one of them. According to the classic early-selection account, subjects use the probe to select material for perceptual analysis from a precategorical (iconic) memory, but according to late-selection theories, subjects first identify the letters and then use the probe to select one letter for report from the set of categorized items. Pashler (1984) based his test for the locus of selection on a manipulation of display quality in previewed displays. He presented a target for 200 msec and then added a probe, together with the target, for an additional 150 msec. Reducing the target’s stimulus quality increased response latency. If the subjects identified the characters before the probe appeared and then selected an item for report, the clarity of the original array should not have affected response latency. Hence, Pashler concluded that his subjects used the probe to select from a precategorical store (early selection). Pashler’s experiment did not force subjects to rely on memory of the target; hence, although his experiment documented a situation in which subjects used early selection, it did not rule out late selection in studies of information persistence. We replicated Pashler’s findings and, using his logic, showed that when subjects are forced to rely on memory of the target, they select from a categorized store. 相似文献
952.
Many youth placed in out of home care have serious anger and aggression problems. These youth create much administrative and staff frustration. This frustration can cause program administrators to look to new treatment modalities whether inside or outside of their specific milieu for the therapeutic solutions to these problems. This randomized control group study provides an example of the importance of experimental program evaluation when an applied setting begins a drift towards the use of new treatment modalities. The results showed that both treatment and control groups improved over time but that there was no differences between groups in the daily number of angry incidents, the number of youth negatively terminated from the program, or self-report of state-trait anger expression. The results also suggest that without this research the noneffective intervention would have continued to be funded and given causative status for the observed improvements in referred youth behavior into the foreseeable future. Moreover, the development of these types of superstitious beliefs may lead child care organizations to spend scarce dollars on expensive treatments that do not increase the efficacy of the treatment as usual. Thus, this study shows that there are potential economic and treatment efficacy reasons for the use of experimental program evaluation when new treatments are implemented. 相似文献
953.
Tanya Chartrand Shannon Pinckert Jerry M. Burger 《Journal of applied social psychology》1999,29(1):211-221
We examined the effects of 2 variables on compliance rates within the foot-in-the-door procedure. Participants who agreed to a small request were presented with a larger request either immediately after the first request or 2 days later. The second request was presented either by the same person or by a different requester. Compared to a control group receiving only the large request, participants were more likely to agree to the second request in all experimental conditions except one. When the same requester presented the second request without delay, participants were less likely than the control group to agree to the target request. This latter condition represents a situation in which typical foot-in-the-door procedures can backfire on the requester. 相似文献
954.
Experiment 1 documents modality effects on the material-weight illusion for a low-mass object set (58.5 g). These modality effects indicate that the material-weight illusion is principally a haptically derived phenomenon: Haptically accessed material cues were both sufficient and necessary for full-strength illusions, whereas visually accessed material cues were only sufficient to generate moderate-strength illusions. In contrast, when a high-mass object set (357 g) was presented under the same modality conditions, no illusions were generated. The mass-dependent characteristic of this illusion is considered to be a consequence of differing grip forces. Experiment 2 demonstrates that the enforcement of a firm grip abolishes the low-mass material-weight illusion. Experiment 3 documents that a firm grip also diminishes perceptual differentiation of actual mass differences. Several possible explanations of the consequences of increasing grip force are considered. 相似文献
955.
This paper offers background for an English translation of an article originally published in 1891 by Augustin Charpentier (1852-1916), as well as a summary of it. The article is frequently described as providing the first experimental evidence for the size-weight illusion. A comparison of experiments on the judged heaviness of lifted weights carried out by Weber (1834) and by Charpentier (1891) supports the view that Charpentier's work deserves priority; review of other experimental studies on the size-weight illusion in the 1890s suggests that the idea that the illusion depended on "disappointed expectations," especially with respect to speed of lift, became dominant almost immediately following the publication of Charpentier's paper. The fate of this and other ideas, including "motor energy," in 20th-century research on the illusion is briefly described. 相似文献
956.
957.
Shannon TA 《Theological studies》1999,60(1):111-123
The first section of the Notes on Moral Theology reviews ethical issues in genetics through the lenses of privacy-confidentiality; risk-benefit analysis in relation to prenatal diagnosis and gene therapy; and freedom-determinism/human dignity in the context of cloning. The author provides an overview of developments in genetics and highlights thematic issues common to these developments. 相似文献
958.
We consider latent variable models for an infinite sequence (or universe) of manifest (observable) variables that may be discrete, continuous or some combination of these. The main theorem is a general characterization by empirical conditions of when it is possible to construct latent variable models that satisfy unidimensionality, monotonicity, conditional independence, andtail-measurability. Tail-measurability means that the latent variable can be estimated consistently from the sequence of manifest variables even though an arbitrary finite subsequence has been removed. The characterizing,necessary and sufficient, conditions that the manifest variables must satisfy for these models are conditional association and vanishing conditional dependence (as one conditions upon successively more other manifest variables). Our main theorem considerably generalizes and sharpens earlier results of Ellis and van den Wollenberg (1993), Holland and Rosenbaum (1986), and Junker (1993). It is also related to the work of Stout (1990).The main theorem is preceded by many results for latent variable modelsin general—not necessarily unidimensional and monotone. They pertain to the uniqueness of latent variables and are connected with the conditional independence theorem of Suppes and Zanotti (1981). We discuss new definitions of the concepts of true-score and subpopulation, which generalize these notions from the stochastic subject, random sampling, and domain sampling formulations of latent variable models (e.g., Holland, 1990; Lord & Novick, 1968). These definitions do not require the a priori specification of a latent variable model.The authors made equivalent contributions to the results of this article. Ellis' research was supported by the Dutch Interuniversitary Graduate School of Psychometrics and Sociometrics. Junker's research was supported by ONR Grant N00014-87-K-0277, NIMH Grant MH15758, and a Carnegie Mellon University Faculty Development Grant. In addition Junker would like to acknowledge the hospitality of the Nijmegen Institute for Cognition and Information during his visit to the University of Nijmegen in August 5–10, 1993. 相似文献
959.
Preschool Children's Emotional Expressions with Peers: The Roles of Gender and Emotion Socialization
This study examined whether mothers and fathers reported using different emotion socialization strategies and whether these differences were related to preschoolers' gender and emotional expressiveness during peer play. Ninety percent of the children were Caucasian, 6% were Asian-American, and 4% were Mexican-American. The positive expressive behavior of 82 preschoolers participating in two conflict eliciting situations with two same gender peers were coded. The scores for the two sessions were averaged. All of the mothers and 63 of the fathers were administered three emotion socialization questionnaires. Results revealed that girls expressed more positive emotion than boys. In addition, mothers and fathers also reported using different emotion socialization practices and, in some cases, this was dependent upon their child's gender. The findings also showed that mothers' and fathers' reports of emotion socialization practices were differentially related to children's emotionally expressive behavior during peer play. In addition, fathers' emotion socialization practices accounted for unique variance in children's emotionally expressive behavior over and above that explained by the maternal emotion socialization variables. These findings highlight the importance of mothers' and fathers' emotion socialization practices for preschoolers' emotional competence in emotionally challenging situations with peers. 相似文献
960.
Maurits G.T. Kwee Albert Ellis 《Journal of Rational-Emotive & Cognitive-Behavior Therapy》1997,15(2):95-132
The purpose of this article is to determine whether two distinct modes of cognitive-behaviour therapy—Rational Emotive Behaviour Therapy (REBT) and Multimodal Therapy (MMT)—can be reconciled. This quest in the spirit of integrationism is pursued along three lines of inquiry: Do we talk about schools, approaches, or techniques? A reconciliation between MMT and REBT as systems seems not to be feasible, just because of the simple fact that MMT is not a new school with an idiosyncratic theory, whereas REBT is. However, REBT is also a congenial approach consisting of various eclectic techniques, as is MMT. It is explained how the A-B-C format and firing orders of the BASICI.D. modalities stem from an S-O-R model. Furthermore, the circular character of the various modalities (thinking, feeling, and behaving) is recognised both in MMT and in REBT. The techniques used in REBT and MMT overlap for 65–80%, according to a comparative perusal of Ellis's and Lazarus's presentations of preferred techniques. This means that MMT and REBT, as an approach with distinct techniques, “must” be very similar in practice. The conclusion is that philosophically Ellis and Lazarus see eye-to-eye and that MMT and REBT overlap a great deal. But a fusion is not yet at hand. At best the two can be described as two sides of one coin. “When you wake up in the morning, Pooh,” said Piglet at last, “what's the first thing you say to yourself?” “What's for breakfast?” said Pooh. “What do you say, Piglet?” “I say, I wonder what's going to happen exciting today?” said Piglet. Pooh nodded thoughtfully. “It's the same thing,” he said. “What's that?” the Unbeliever asked. “Wisdom from a Western Taoist,” I said. “It sounds like something from Winnie-the Pooh,” he said. “It is,” I said. From The Tao of Pooh Benjamin Hoff (1982) 相似文献