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251.
Reduced response readiness delays stop signal inhibition 总被引:4,自引:0,他引:4
This study examines the effect of response readiness on the stopping of motor responses. Thirteen subjects performed a primary task requiring a speeded choice reaction on go trials and response inhibition on nogo trials. An occasional cue informed subjects that a nogo trial was imminent but left them uncertain about the number of go trials separating the cue and the upcoming nogo trial. This setup was meant to create test episodes of reduced response readiness (i.e., trial sequences initiated by the cue and terminated by the nogo signal) and control episodes, in which subjects were ready to execute a speeded choice reaction (i.e., trial sequences consisting only of go trials). During both episodes, a visual stop signal could occasionally and unpredictably follow go signal onset, instructing subjects to withhold their response to the go signal. Choice reactions on go trials were delayed during test episodes relative to control episodes. Most importantly, stop reactions were delayed, not facilitated, during test episodes compared to control episodes. These findings were taken to suggest that reduced readiness gives rise to more forceful responses that are then more difficult to inhibit. 相似文献
252.
An instance theory of attention and memory 总被引:6,自引:0,他引:6
Logan GD 《Psychological review》2002,109(2):376-400
An instance theory of attention and memory (ITAM) is presented that integrates formal theories of attention and memory phenomena by exploiting commonalities in their formal structure. The core idea in each theory is that performance depends on a choice process that can be modeled as a race between competing alternatives. Attention and categorization are viewed as different perspectives on the same race. Attention selects objects by categorizing them; objects are categorized by attending to them. ITAM incorporates each of its ancestors as a special case, so it inherits their successes. 相似文献
253.
Logan CA 《Journal of the history of the behavioral sciences》2002,38(4):393-403
In the nineteenth century, scientific materials in experimental physiology changed dramatically. In this context, phenomena that had been widely accepted were lost, sometimes to be reintroduced later as "discoveries." I describe the loss of the phenomenon of classical conditioning, later rediscovered by Ivan Pavlov. In 1896, Austrian physiologist Alois Kreidl demonstrated experimentally that animals anticipate the occurrence of food that is cued by a variety of stimuli. Kreidl stated, moreover, that the fact that animals can be called to food had been widely known to science since the 1830s. I describe Kreidl's work and discuss several factors that may have led to the disappearance of conditioning prior to its rediscovery by Pavlov. 相似文献
254.
Perceptions of peer social–sexual interactions were examined in a group of high school students (N=150). Participants were presented with six brief vignettes that described three types of sexual harassment between adolescent peers: physical, verbal/visual, and derogatory. Two vignettes were written for each type of behavior to reflect either a sexually explicit or implicit behavior. Participants responded to Rosenberg's Self-Esteem Scale and the Attitudes toward Women Scale for Adolescents (AWSA), and then rated the sexually harassing nature of the behaviors. Sexual harassment ratings varied as a function of the type of behavior and the sexual explicitness with which it was displayed. Although consensus was reached regarding the sexually harassing nature of both the sexually implicit and explicit physical forms of behaviors, only when the verbal/visual behavior was explicitly displayed was it perceived as sexually harassing. Interactions among self-esteem, gender attitudes, and type of behavior were also noted. Irrespective of the explicitness with which it was displayed, rater characteristics were influential for both the verbal/visual and derogatory forms of harassment. 相似文献
255.
Xingshan Li Gordon D. Logan N. Jane Zbrodoff 《Attention, perception & psychophysics》2010,72(2):409-426
Two experiments addressed the coupling between eye movements and the cognitive processes underlying enumeration. Experiment 1 compared eye movements in a counting task with those in a “look” task, in which subjects were told to look at each dot in a pattern once and only once. Experiment 2 presented the same dot patterns to every subject twice, to measure the consistency with which dots were fixated between and within subjects. In both experiments, the number of fixations increased linearly with the number of objects to be enumerated, consistent with tight coupling between eye movements and enumeration. However, analyses of fixation locations showed that subjects tended to look at dots in dense, central regions of the display and tended not to look at dots in sparse, peripheral regions of the display, suggesting a looser coupling between eye movements and enumeration. Thus, the eyes do not mirror the enumeration process very directly. 相似文献
256.
Skilled actions are commonly assumed to be controlled by precise internal schemas or cognitive maps. We challenge these ideas
in the context of skilled typing, where prominent theories assume that typing is controlled by a well-learned cognitive map
that plans finger movements without feedback. In two experiments, we demonstrate that online physical interaction with the
keyboard critically mediates typing skill. Typists performed single-word and paragraph typing tasks on a regular keyboard,
a laser-projection keyboard, and two deconstructed keyboards, made by removing successive layers of a regular keyboard. Averaged
over the laser and deconstructed keyboards, response times for the first keystroke increased by 37%, the interval between
keystrokes increased by 120%, and error rate increased by 177%, relative to those of the regular keyboard. A schema view predicts
no influence of external motor feedback, because actions could be planned internally with high precision. We argue that the
expert knowledge mediating action control emerges during online interaction with the physical environment. 相似文献
257.
Journal of Philosophical Logic - In 1988, Kit Fine published a semantic theory for quantified relevant logics. He referred to this theory as stratified semantics. While it has received some... 相似文献
258.
Gordon D. Logan 《Current directions in psychological science》2003,12(2):45-48
Executive control is studied in many areas of psychological research using a wide variety of procedures. This article focuses on studies of the executive processes involved in switching between tasks. The experiments discussed were designed to isolate and measure the duration of the executive processes required to switch from one task to another. However, the research is open to alternative interpretations that do not hypothesize executive processes, suggesting that task-switching procedures may not measure the duration of executive control. Further research is required to determine whether or not behavioral effects reflect the involvement of executive processes. 相似文献
259.
Dutilh Gilles Annis Jeffrey Brown Scott D. Cassey Peter Evans Nathan J. Grasman Raoul P. P. P. Hawkins Guy E. Heathcote Andrew Holmes William R. Krypotos Angelos-Miltiadis Kupitz Colin N. Leite Fábio P. Lerche Veronika Lin Yi-Shin Logan Gordon D. Palmeri Thomas J. Starns Jeffrey J. Trueblood Jennifer S. van Maanen Leendert van Ravenzwaaij Don Vandekerckhove Joachim Visser Ingmar Voss Andreas White Corey N. Wiecki Thomas V. Rieskamp Jörg Donkin Chris 《Psychonomic bulletin & review》2019,26(4):1051-1069
Psychonomic Bulletin & Review - Most data analyses rely on models. To complement statistical models, psychologists have developed cognitive models, which translate observed variables into... 相似文献
260.
Previous research has identified two processes that play an important role in anaphor resolution. An activation process increases the accessibility of an anaphor’s referent; a suppression process diminishes the accessibility of its nonreferents. In this study, we examined how these processes operate when reference to two story characters shifts rapidly, as it does in story dialogue. Dialogue raises interesting questions about how the antecedent of an anaphor becomes the most activated entity in the reader’s discourse model. Do readers suppress an anaphor’s nonreferent even though that same entity is likely to be the referent of a subsequent anaphor? Are activation and suppression processes triggered by the anaphor itself or by cues that signal a change of speaker? We found that an anaphor’s antecedent is activated differently in dialogue than it is elsewhere in a narrative. Our results suggest that readers use knowledge about the structure of dialogue to anticipate the referent of an upcoming anaphor. 相似文献