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251.
To measure the effect of a rectangular percutaneous conditioning shock to one finger on subjective magnitude of a suprathreshold test shock to an adjacent finger, Ss equated a contralateral matching stimulus to the test shock. The conditioning shock generally increased the apparent intensity of the test shock. This facilitation was a negatively accelerated function of test-shock current. Larger conditioning stimuli produced greater facilitation. Over limited intervals, time between conditioning and test or test and matching stimuli had no systematic effects. 相似文献
252.
Three albino rats were given extensive exposure to an escape procedure in which shocks were scheduled to occur 30 sec apart. The amount of downward force exerted on the lever was continuously recorded and compared with traditional discrete measurement in which only responses above an arbitrary force threshold were recorded. Subjects typically remained in contact with the lever throughout the shock-free intertrial interval. Shock onset reliably occasioned a brief lurch from and return to the lever, which resulted in a lever-press escape response being recorded. Lever contact, which occupied an average of 90% of session time, showed great stability in force after a brief (e.g., 5-sec) period of instability after each shock terminated. In general, continuous measurement revealed considerably different results than discrete measurements of on-lever behavior. For example, continuous lever contact fluctuating near response threshold was often recorded as discrete responding, and sustained lever contact occurring below response threshold was omitted from discrete measurement. 相似文献
253.
Mark S. Burton Andrew A. Cooper Patricia G. Mello Norah C. Feeny Lori A. Zoellner 《Behavior Therapy》2021,52(4):970-981
Posttraumatic stress disorder (PTSD) frequently co-occurs with major depressive disorder, and empirically supported PTSD treatments consistently improve depression. However, both diagnoses are heterogeneous and specific patterns of symptom overlap may be related to worse treatment outcome. Two hundred individuals with chronic PTSD participated in a doubly randomized preference trial comparing prolonged exposure and sertraline. Latent Profile Analysis was used to identify classes based on PTSD and depression symptoms prior to starting treatment. A three-class model best fit the data, with a high depression and PTSD severity class (distressed), a moderate depression and low PTSD avoidance class (depressive), and a low depression and high PTSD avoidance class (avoidant). The avoidant class showed the lowest rates of major depressive disorder diagnosis and transdiagnostic vulnerabilities to depression. Patients in the distressed class experienced more robust PTSD treatment response, with no differences between prolonged exposure and sertraline. These findings highlight the role of avoidance in nondepressed PTSD presentations while also demonstrating that co-occurring depression is not contraindicated in evidence-based PTSD treatment. 相似文献
254.
Burton Norman Seitler 《American journal of psychoanalysis》2009,69(3):221-237
This author suggests that myopia is related to psychogenic factors involving an unconscious representation of, and defense against tension. Further, the argument is made that such tension directly causes the extra-ocular muscles of the eyeball to tighten, ultimately creating the errors of refraction, which define the condition known as myopia. The author makes the case that the specific nature of the tension has to do with an interruption in the separation–individuation process that has occurred, in which the myopic individual experiences separation anxiety, and is now “required” to stay close to the mother for fear of abandonment. Apparently, the only way myopes are then able to achieve some sort of psychological distance is through the development of high-level abstract conceptualization abilities. In addition to separation fears, this author notes that myopes exhibit significantly higher levels of castration anxiety as compared with normal-sighted individuals, matched in IQ. Tables showing empirical findings supporting the above psychoanalytic interpretations are provided for the readers review. 相似文献
255.
Anita Schrader McMillan Mark Burton 《Journal of community & applied social psychology》2009,19(3):198-211
The paper discusses the implementation and effect of group‐based parenting workshops oriented by the principles of liberation psychology in a low‐income, hispanicized community in Guatemala City. The objective of this initiative was not only to improve outcomes in the parent–child relationship, but to galvanize the formation of community‐based support groups that could have multiple ends. The theoretical foundations of the project are introduced, before illustrating their practical application. Sixteen months post‐intervention, largely positive effects were being sustained in parent child relations. The project was also successful in generating social action through the formation of grass‐roots women's organizations. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
256.
Significant advances have been made in understanding human face recognition . However, a fundamental aspect of this process, how faces are located in our visual environment, is poorly understood and little studied. Here we examine the role of color in human face detection. We demonstrate that detection performance declines when color information is removed from faces, regardless of whether the surrounding scene context is rendered in color. Furthermore, faces rendered in unnatural colors are hard to detect, suggesting a role beyond simple segmentation. When faces are presented such that half the surface is colored appropriately, and half unnaturally, performance declines. This suggests that observers are not simply using the presence of skin color "patches" to detect faces. Rather, our data suggest that detection operates via a face template combining diagnostic color and face-shape information. These findings are consistent with color-template approaches used in some computer-based face detection systems. 相似文献
257.
Burton OR 《The American journal of bioethics : AJOB》2007,7(2):6-12
Race and religion are integral parts of bioethics. Harm and oppression, with the aim of social and political control, have been wrought in the name of religion against Blacks and people of color as embodied in the Ten Commandments, the Inquisition, and in the history of the Holy Crusades. Missionaries came armed with Judeo/Christian beliefs went to nations of people of color who had their own belief systems and forced change and caused untold harms because the indigenous belief systems were incompatible with their own. The indigenous people were denounced as ungodly, pagan, uncivilized, and savage. Hence, laws were enacted because of their perceived need to structure a sense of morality and to create and build a culture for these indigenous people of color. To date bioethics continues to be informed by a Western worldview that is Judeo/Christian in belief and orientation. However, missing from bioethical discourse in America is the historical influence of the Black Church as a cultural repository, which continues to influence the culture of Africans and Blacks. Cultural aspects of peoples of color are still largely ignored today. In attempting to deal with issues of race while steering clear of the religious and cultural impact of the Black Church, bioethics finds itself in the middle of a distressing situation: it simply cannot figure out what to do with race. 相似文献
258.
There is evidence that face processing is capacity-limited in distractor interference tasks and in tasks requiring overt recognition memory. We examined whether capacity limits for faces can be observed with a more sensitive measure of visual processing, by measuring repetition priming of flanker faces that were presented alongside a face or a nonface target. In Experiment 1, we found identity priming for face flankers, by measuring repetition priming across a change in image, during task-relevant nonface processing, but not during the processing of a concurrently-presented face target. Experiment 2 showed perceptual priming of the flanker faces, across identical images at prime and test, when they were presented alongside a face target. In a third Experiment, all of these effects were replicated by measuring identity priming and perceptual priming within the same task. Overall, these results imply that face processing is capacity limited, such that only a single face can be identified at one time. Merely attending to a target face appears sufficient to trigger these capacity limits, thereby extinguishing identification of a second face in the display, although our results demonstrate that the additional face remains at least subject to superficial image processing. 相似文献
259.
In recognition memory for unfamiliar faces, performance for target-present items (hits) does not correlate with performance for target-absent items (false positives), a result which runs counter to the more usual mirror effect. In this paper we examinesubjects' performance on fac e matching, a nd demonstrate no relationship-between performance on matching items and performance on nonmatching items. This absence of a mirror effect occurs for multidistractor, 1-in-10 matching tasks (Experiment 1) and for simple paired-item tasks (Experiment 2). In Experiment 3 we demonstrate that matching familiar faces produces a strong mirror effect. However, inverting the familiar faces causes the association to disappear once more (Experiment 4). We argue thatfamiliar and unfamiliar faces are represented in qualitatively different ways. 相似文献
260.
King LA Burton CM Hicks JA Drigotas SM 《Journal of personality and social psychology》2007,92(5):905-919
Three studies examined the potential interactions of the experiential system and positive affect (PA) in predicting superstitious beliefs and sympathetic magic. In Study 1, experientiality and induced positive mood interacted to predict the emergence of belief in videos purporting to show unidentified flying objects or ghosts. In Study 2, naturally occurring PA interacted with experientiality to predict susceptibility to sympathetic magic, specifically difficulty in throwing darts at a picture of a baby (demonstrating the law of similarity). In Study 3, induced mood interacted with experientiality to predict sitting farther away from, and expressing less liking for, a partner who had stepped in excrement (demonstrating the law of contagion). Results are interpreted as indicating that PA promotes experiential processing. Implications for the psychology of nonrational beliefs and behaviors are discussed. 相似文献