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251.
While a number of authors have suggested that patients with palilalia typically show a tendency to repeat words or phrases with an increasing rate, others maintain that an accelerating speech rate is not essential. The present paper reports the results of an instrumental analysis of the reiterations in a 60-year-old man with palilalia. Results indicate that there is not necessarily an increasing rapidity in palilalia. Duration of the repetition trains, duration of the pauses between the trains, and average number and average duration of the components within a train were variable but did not show a pattern indicative of a systematically increasing rate. The variation in the reiterations suggests that novel or varying motor processes are deployed to produce the elements in a sequence rather than an invariant motor program. 相似文献
252.
Charlotte Bonardi 《Learning and motivation》2007,38(3):208-228
In Experiment 1, rats were trained on a discrimination in which one occasion setter, A, signaled that one cue (conditioned stimulus, CS), x, would be followed by one outcome, p (unconditioned stimulus, US), and a second CS, y, by a different outcome, q (x → p and y → q); a second occasion setter, B signalled the reverse CS-outcome relations (x → q and y → p). In a subsequent stage, the animals were divided into two groups, and trained as before, except that both A and B were presented in compound with a novel occasion setter, C. For Group S (same) the CS-outcome relations following A and B were identical to those in the pretraining stage, whereas in Group D (different) they were reversed. In a subsequent test, stimulus C was shown to be a more effective occasion setter in Group D than in Group S. In Experiment 2, rats were trained on a negative occasion-setting discrimination in which CS x signaled outcome p, and y outcome q; when x and y were signaled by the occasion setter A then no outcome followed (x → p, y → q, A:x-, and A:y-). In a subsequent stage, A was now trained as a positive occasion setter, signaling reinforcement of x and y. In Group S, x and y signaled the same outcomes as in the prior training stage (x-, y-, A:x → p, and A:y → q), whereas in Group D they signaled the opposite outcomes (x, y, A:x → q, and A:y → p); more efficient test performance was seen in the latter group. These results suggest that the each occasion setter conveyed information about the specific combination of CS and US paired in its presence (i.e., x → p and y → q, or x → no p and y → no q). These results are consistent with the suggestion that occasion setters operate, at least in part, on a specific CS-US association. 相似文献
253.
A random sampling of patients taking a psychostimulant, an atypical antipsychotic, a combination of both, or neither were administered a brief examination to assess the possibility of abnormal motor movements induced by combining these classes of medications. Children on the combination demonstrated significant abnormalities when compared to those on either medication alone. This suggests a need for further study of neurologic risks associated with combining these medications. 相似文献
254.
This study assessed associations between a number of demographic, medical and psychological risk factors and post-traumatic stress disorder (PTSD) symptoms following stroke. Individuals (N = 102) who had experienced a stroke within the previous year participated in the study. Participants completed questionnaires containing measures of PTSD symptoms and a range of psychological risk factors (i.e., anxiety, depression, negative affect, dissociation, cognitive appraisals). Regression analyses revealed the variables under consideration were able to explain large proportions of the variance in the number (R(2) = .54, p < 0.001) and severity (R(2) = .58, p < 0.001) of PTSD symptoms. Number of strokes, negative affect and cognitive appraisals emerged as significant predictors of both the number and severity of PTSD symptoms. The present findings suggest that a significant proportion of stroke patients may benefit from the detection and treatment of PTSD symptoms. 相似文献
255.
Previous studies have documented moderate-to-large associations between ratings of physical attractiveness and other interpersonal traits, but this research has invariably relied on within-subjects designs that leave open the possibility of halo effects or response biases. In the present study, 40 men completed the Photographic Figure Rating Scale in a within-subjects design, rating the figures for physical attractiveness, health, and suitability as a long-term partner. In addition, 108 men completed the same scale in a between-subjects design, being randomly allocated to one of three subgroups where they rated the figures for attractiveness, health, or suitability as a long-term partner. Results indicated no significant differences in ratings for the within-subjects participants. In contrast, there were significant differences in ratings for the between-subjects design. These results highlight the importance of considering halo and response bias effects when designing studies of interpersonal judgements and interpreting their results. 相似文献
256.
Tracie L. Stewart Jacqueline R. Laduke Charlotte Bracht Brooke A. M. Sweet Kristine E. Gamarel 《Journal of applied social psychology》2003,33(9):1898-1921
The effectiveness of Jane Elliott's well‐known “blue‐eyes/brown‐eyes” exercise in reducing college students’ stereotyping and prejudice was assessed. College students were randomly assigned to either the exercise group or a comparison group. Blue‐eyed and brown‐eyed exercise participants were given discriminatory versus preferential treatment, respectively; a procedure purportedly designed to sensitize participants to the emotional and behavioral consequences of discrimination. Participation in the exercise was found to be associated with White students (a) indicating significantly more positive attitudes toward Asian American and Latino/Latina individuals, but only marginally more positive attitudes toward African American individuals; and (b) reporting anger with themselves when noticing themselves engaging in prejudiced thoughts or actions—negative affect that theoretically could prove to be either helpful or detrimental in promoting long‐term reduction of stereotyping and prejudice. 相似文献
257.
Motivation and Emotion - Individuals’ recall of past emotions is often biased. Previous studies have focused on personality dispositions as predictors of such bias, but not yet on event-level... 相似文献
258.
Animal Cognition - Throughout the animal kingdom, antipredator mechanisms are an evolutionary driving force to enable the survival of species classified as prey. Information regarding a... 相似文献
259.
Ninety‐one children aged between 2;10 and 5;0 participated in a training study of false belief. Children were assigned to either an explanation condition, a practice condition or a control condition where children heard two stories unrelated to false belief. Children’s eye movements in anticipation of the protagonist reappearing were monitored at pre‐test. Only the explanation condition led to improvements in judgement and justification of a protagonist’s future action based on false belief. Children who looked in anticipation to where the protagonist thought the object was at pre‐test were more likely to give a correct judgement at post‐test than those who did not. Those children in the explanation group who gave a correct judgement at pre‐test were more likely to give an appropriate justification at post‐test than those who did not. Three main conclusions are drawn: (1) providing explanation about the underlying principles of a task is more likely to lead to improvements in performance than merely informing children of whether their response is correct; (2) the nature of improvements in performance will depend on the level of knowledge of the child at pre‐test; (3) training will only be beneficial for those children who demonstrate evidence of implicit understanding. 相似文献
260.
Charlotte Bonardi Geoffrey Hall 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1994,47(1):63-81
In two experiments rats received training on two concurrent appetitive feature-positive discriminations. A preliminary test in Experiment 1 confirmed previous demonstrations of the transfer of occasion-setting properties—the feature from one of these discriminations was better able to facilitate responding to the occasion-set target CS from the second discrimination than to a control stimulus that had not been the subject of occasion-setting. The source of this transfer was investigated in a second phase of training, and in Experiment 2. In both experiments one of the occasion-set CSs was paired with food, and generalization of appetitive conditioned responding from this stimulus to the second occasion-set CS, and to a control cue, was examined. There was more generalization from the first occasion-set CS to the second CS that had also been occasion-set than to the control cue. This is taken as evidence that occasion-set CSs are rendered more similar as a result of their common training history. The implications of these findings for explaining transfer of occasion setting are discussed. 相似文献