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141.
Cognitive defusion techniques are designed to reduce the functions of thoughts by altering the context in which they occur, rather than the attempting to alter the form, frequency, or situational sensitivity of the thoughts themselves. Applied technologies designed to produce cognitive defusion seem to lead to reductions in the believability of negative thoughts, but defusion techniques are generally only parts of complex packages and the role of defusion techniques per se is note yet known. The present study examined the impact of a cognitive defusion technique first described by Titchener nearly 90 years ago: rapidly repeating a single word. In series of eight single-case alternating treatment designs, this defusion technique was compared to a distraction task, and to a thought control task on reductions in the discomfort and believability of self-relevant negative thoughts. The cognitive defusion technique reduced both discomfort and believability more so than the comparison approaches. Control studies showed that the effect was probably not due to demand characteristics. 相似文献
142.
This study examined the effect of age and practice on the structure of children's force variability to test the information processing hypothesis that a reduction of sensorimotor system noise accounts in large part for age-related reductions in perceptual-motor performance variability. In the study, 6-year-olds, 10-year-olds, and young adults practiced on 5 consecutive days (15 trials/day), maintaining for 15-s trials a constant level of force (5 or 25% of maximum voluntary contraction) against an object using a pinch grip (thumb and index finger). With increasing age, the amount of force error and variability decreased, but the sequential structure of variability increased in irregularity. With practice, children reduced the amount of variability by changing the structure of the force output so as to be more similar to that of their older counterparts. The findings provide further evidence that practice-driven changes in the structure of force output, rather than a decline in the amount of white noise, largely account for age-related reductions in the amount of force variability. 相似文献
143.
The present experiment examined the one-target advantage (OTA) with regard to saccadic eye movements. The OTA, previously found with manual pointing responses, refers to the finding that movements are executed faster when the limb is allowed to stop on the target compared to the situation where it has to proceed and hit a second target. Using an adapted limb movement OTA task, saccades of 5 degrees and 15 degrees were made to (a) a single target (one-target), (b) one target and immediately to another target without a change in direction (two-target-extension), and (c) one target and immediately back to the start location (two-target-reversal). Unlike manual movements, the movement times for the initial saccade in the two-target-extension condition were not prolonged compared to either of the other two conditions. Moreover, this pattern of results was found for both the shorter and longer amplitude saccades. The results indicate that the OTA does not occur in the oculomotor system and therefore is not a general motor control phenomenon. 相似文献
144.
The results of a functional analysis showed that inappropriate sexual behaviors exhibited by a 9-year-old boy who had been diagnosed with traumatic brain injury were maintained by positive reinforcement in the form of social attention. An intervention consisting of functional communication training and extinction resulted in reduced levels of inappropriate sexual behaviors. 相似文献
145.
Behavioral treatment of insomnia in older adults: an open clinical trial comparing two interventions
Pallesen S Nordhus IH Kvale G Nielsen GH Havik OE Johnsen BH Skjøtskift S 《Behaviour research and therapy》2003,41(1):31-48
Fifty-five insomniacs, 60 years or above, participated in a behavioral treatment program, comparing two interventions (sleep hygiene+stimulus control vs sleep hygiene+relaxation tape). Half of the subjects were randomized to a waiting-list condition prior to treatment. No significant changes were observed during the waiting-list period. During the treatment period however, the subjects improved on several sleep parameters, and treatment gains were maintained at a 6-month follow-up. The effects of treatment were greater for nocturnal measures (e.g. sleep onset latency and total sleep time) as compared to daytime measures (e.g. life satisfaction, daytime alertness) and not-targeted behavior (medication use). There were no differences in treatment effects for the two interventions. 相似文献
146.
A 67 item self-report questionnaire called the Meta-Cognitive Beliefs Questionnaire (MCBQ) was developed to assess endorsement of beliefs about the importance of control and negative consequences associated with unwanted, ego-dystonic intrusive thoughts, images and impulses. The MCBQ and a battery of questionnaires that assessed symptoms and cognitions of worry, obsessive-compulsive disorder, anxiety, and depression were administered to large samples of undergraduate students. Beliefs about control of intrusive thoughts and perceived negative consequences due to uncontrolled mental intrusions had a unique significant relationship with obsessions, and to a lesser extent, worry. These findings are consistent with current cognitive behavioral theories that suggest an important role for meta-cognitive beliefs in the pathogenesis of obsessions. 相似文献
147.
Thompson RH Iwata BA Hanley GP Dozier CL Samaha AL 《Journal of applied behavior analysis》2003,36(2):221-238
Several techniques have been used in applied research as controls for the introduction of a reinforcement contingency, including extinction, noncontingent reinforcement (NCR), and differential reinforcement of other behavior (DRO). Little research, however, has examined the relative strengths and limitations of these "reversal" controls. We compared the effects of extinction with those of NCR and DRO in both multi-element and reversal designs, with respect to (a) rate and amount of response decrement, (b) rate of response recovery following reintroduction of reinforcement, and (c) any positive or negative side effects associated with transitions. Results indicated that extinction generally produced the most consistent and rapid reversal effects, with few observed negative side effects. 相似文献
148.
Strategies of control,aggression, and morality in preschoolers: an evolutionary perspective 总被引:2,自引:0,他引:2
Hawley PH 《Journal of experimental child psychology》2003,85(3):213-235
Moral reasoning, moral affect, social problem solving skills, and social preferences were assessed in 163 ethnically mixed preschoolers (2.86-5.95 years). Participants were rated by their teachers on prosocial and coercive strategies of control, success at resource control, and aggression (overt and relational). Based on their employment of coercive and prosocial strategies of resource control, the children were categorized as bistrategic controllers, coercive controllers, prosocial controllers, noncontrollers, or typicals. Teacher-rated relational aggression was positively associated with moral maturity in girls. Bistrategic controllers, although aggressive, were morally mature and preferred play partners by their peers. The results are discussed in terms of hypotheses that arise from evolutionary theory which suggests that highly effective resource controllers would be simultaneously aggressive and yet well aware of moral norms. The findings are contrasted with alternative hypotheses that might arise variously from traditional and prevailing approaches. 相似文献
149.
Weak coherence,no theory of mind,or executive dysfunction? Solving the puzzle of pragmatic language disorders 总被引:4,自引:0,他引:4
Deficits in pragmatic language ability are common to a number of clinical populations, for example, right-hemisphere damage (RHD), Autism and traumatic brain injury (TBI). In these individuals the basic structural components of language may be intact, but the ability to use language to engage socially is impaired. Despite the nature of these difficulties being well documented, exactly what causes these difficulties is less clear. Furthermore, the current status of causal explanations for pragmatic difficulties across these populations is divergent and sometimes contradictory. This paper explores the empirical validity of three theories that attempt to explain pragmatic language impairment. It is recommended that a new, more convergent approach to investigating the causes of pragmatic language disability be adopted. 相似文献
150.
The experiments investigated how two adult captive chimpanzees learned to navigate in an automated interception task. They
had to capture a visual target that moved predictably on a touch monitor. The aim of the study was to determine the learning
stages that led to an efficient strategy of intercepting the target. The chimpanzees had prior training in moving a finger
on a touch monitor and were exposed to the interception task without any explicit training. With a finger the subject could
move a small "ball" at any speed on the screen toward a visual target that moved at a fixed speed either back and forth in
a linear path or around the edge of the screen in a rectangular pattern. Initial ball and target locations varied from trial
to trial. The subjects received a small fruit reinforcement when they hit the target with the ball. The speed of target movement
was increased across training stages up to 38 cm/s. Learning progressed from merely chasing the target to intercepting the
target by moving the ball to a point on the screen that coincided with arrival of the target at that point. Performance improvement
consisted of reduction in redundancy of the movement path and reduction in the time to target interception. Analysis of the
finger's movement path showed that the subjects anticipated the target's movement even before it began to move. Thus, the
subjects learned to use the target's initial resting location at trial onset as a predictive signal for where the target would
later be when it began moving. During probe trials, where the target unpredictably remained stationary throughout the trial,
the subjects first moved the ball in anticipation of expected target movement and then corrected the movement to steer the
ball to the resting target. Anticipatory ball movement in probe trials with novel ball and target locations (tested for one
subject) showed generalized interception beyond the trained ball and target locations. The experiments illustrate in a laboratory
setting the development of a highly complex and adaptive motor performance that resembles navigational skills seen in natural
settings where predators intercept the path of moving prey.
Electronic Supplementary Material Supplementary material is available for this article if you access the article at . A link in the frame on the left on that page takes you directly to the supplementary material. 相似文献