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951.
Carolin Dudschig Ian Grant Mackenzie Jessica Strozyk Barbara Kaup Hartmut Leuthold 《Cognitive, affective & behavioral neuroscience》2016,16(5):940-961
Both the imagery literature and grounded models of language comprehension emphasize the tight coupling of high-level cognitive processes, such as forming a mental image of something or language understanding, and low-level sensorimotor processes in the brain. In an electrophysiological study, imagery and language processes were directly compared and the sensory associations of processing linguistically implied sounds or imagined sounds were investigated. Participants read sentences describing auditory events (e.g., “The dog barks”), heard a physical (environmental) sound, or had to imagine such a sound. We examined the influence of the 3 sound conditions (linguistic, physical, imagery) on subsequent physical sound processing. Event-related potential (ERP) difference waveforms indicated that in all 3 conditions, prime compatibility influenced physical sound processing. The earliest compatibility effect was observed in the physical condition, starting in the 80–110 ms time interval with a negative maximum over occipital electrode sites. In contrast, the linguistic and the imagery condition elicited compatibility effects starting in the 180–220 ms time window with a maximum over central electrode sites. In line with the ERPs, the analysis of the oscillatory activity showed that compatibility influenced early theta and alpha band power changes in the physical, but not in the linguistic and imagery, condition. These dissociations were further confirmed by dipole localization results showing a clear separation between the source of the compatibility effect in the physical sound condition (superior temporal area) and the source of the compatibility effect triggered by the linguistically implied sounds or the imagined sounds (inferior temporal area). Implications for grounded models of language understanding are discussed. 相似文献
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953.
Gabriele Wulf Takehiro Iwatsuki Brittney Machin Jessica Kellogg Clint Copeland Rebecca Lewthwaite 《Journal of motor behavior》2018,50(3):285-292
The authors examined several issues related to the motor learning benefits resulting from giving learners choices. In 2 experiments, participants practiced a novel task, throwing a lasso. In Experiment 1, giving learners a choice ostensibly irrelevant to performance (color of mat under target) resulted in enhanced learning relative to a control group. The choice group also reported more positive affect. Experiment 2 compared the effectiveness of task-irrelevant (mat color) versus task-relevant (video demonstrations of the skill) choices. In both choice groups, each participant was yoked to a participant in the other group, and each received the same mat color or saw the video demonstration, respectively, as chosen by their counterpart in the other group. In the control group, participants were yoked to their respective counterparts in each of the choice groups. On a retention test, the 2 choice groups did not differ from each other, but both outperformed the control group. The affective and learning effects seen when learners are given choices, and the fact that task-relevant and task-irrelevant choices resulted in similar learning benefits, are consistent with a content-neutral mechanism for the effects of choice on learning, as described in the OPTIMAL theory of motor learning (Wulf &; Lewthwaite, 2016). 相似文献
954.
The role of signals in two variations of differential‐reinforcement‐of‐low‐rate procedures 下载免费PDF全文
Jessica L. Becraft John C. Borrero Barbara J. Davis Amber E. Mendres‐Smith Mariana I. Castillo 《Journal of applied behavior analysis》2018,51(1):3-24
Differential‐reinforcement‐of‐low‐rate (DRL) schedules are used to decrease the overall rate of, but not eliminate, a target response. Two variations of DRL, spaced‐responding and full‐session, exist. Preliminary comparative analyses suggest that the two schedules function differently when unsignaled. We compared response rates under these two DRL variations with and without signals. In Experiment 1, five preschool students played a game in which points were earned under DRL schedules. In some sessions, a stimulus signaled when responses would be reinforced (S+) or not reinforced (S‐). In others, only an S‐ was present. Signals (S+/S‐) facilitated and maintained responding in both types of DRL schedules. In Experiment 2, we modified the signals with five different preschoolers. Instead of an S‐ only, we did not present any signals. Elimination and high variability of the target response were observed with the S‐ only and absence of S+/S‐, respectively. Signaled DRL schedules are recommended for application. 相似文献
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956.
Alex R. Dopp Anita Saranga Coen Allison B. Smith Jessica Reno David H. Bernstein Suzanne E.U. Kerns Deborah Altschul 《Behavior Therapy》2018,49(4):551-566
Several states have made considerable investments into large-scale implementation of evidence-based treatments (EBTs), yet little is known about key success indicators for these implementation efforts such as cost and sustainability. To that end, the present study examined the economic impact of statewide implementation of multisystemic therapy (MST; Henggeler, Schoenwald, Borduin, Rowland, & Cuningham, 2009), a family- and community-based behavioral EBT for serious juvenile offenders in New Mexico. Participants were 1,869 youth who received MST across 23 teams during the study period. We conducted a cost-benefit analysis using metrics from state data sources that compared the cost of MST to its benefits (i.e., avoided expenses from pre- to posttreatment) in two domains: (a) behavioral health services (i.e., Medicaid claims) and (b) juvenile crime (i.e., taxpayer expenses, tangible and intangible expenses to crime victims). MST costs were based on Medicaid claims, which were reimbursed at an enhanced billing rate that was intended to cover expenses for both clinical and implementation (e.g., training, quality assurance) activities. Results suggest that implementation of MST in New Mexico over the 7-year study period may have produced net benefits, through 2 years posttreatment, of more than $4,643 per youth in avoided behavioral health claims and $15,019 per youth through reductions in juvenile crime. Stated differently, every dollar that New Mexico spent on MST appeared to have returned $3.34 for a total benefit of $64.2 million over the course of the study. We discuss implications of these findings for policymakers, administrators, and researchers who are interested in increasing the sustainability of complex EBTs in community settings. 相似文献
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958.
Perceived slant is grossly overestimated, such that 5 degrees hills look to be about 20 degrees. However, overestimation is found only in visual and verbal measures of apparent slant; action measures are accurate. This dissociation is consistent with several lines of research that suggest that there exist two perceptual processes, one for visually guided actions and another for explicit awareness. However, studies in other contexts have shown that analogous effects can be the result of differences in the task demands associated with the responses themselves as opposed to the processes underlying the responses. Two experiments are reported in which these alternatives were tested. Our results are consistent with the hypothesis that two perceptual processes underlie the dissociation between explicit awareness and visuomotor assessments of perceived slant. 相似文献
959.
Cantlon JF Brannon EM 《Journal of experimental psychology. Animal behavior processes》2007,33(1):32-41
Although many animal species can represent numerical values, little is known about how salient number is relative to other object properties for nonhuman animals. In one hypothesis, researchers propose that animals represent number only as a last resort, when no other properties differentiate stimuli. An alternative hypothesis is that animals automatically, spontaneously, and routinely represent the numerical attributes of their environments. The authors compared the influence of number versus that of shape, color, and surface area on rhesus monkeys' (Macaca mulatta) decisions by testing them on a matching task with more than one correct answer: a numerical match and a nonnumerical (color, surface area, or shape) match. The authors also tested whether previous laboratory experience with numerical discrimination influenced a monkey's propensity to represent number. Contrary to the last-resort hypothesis, all monkeys based their decisions on numerical value when the numerical ratio was favorable. 相似文献
960.