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41.
Villarino Vivas A Reales Avilés JM Fontes de Gracia AI Fontes de Gracia S 《Psicothema》2008,20(2):331-336
Taking into account the studies about the measure of sensitivity in magnitude estimation tasks, we analyze the three most common measures used in this topic: Pearson's product-moment correlation between the logarithm of the stimulus and the logarithm of the response (R), the exponent of Stevens' power function (K), and the measure "M" proposed by Garriga-Trillo. Using a sample of participants greater than usual in psychophysical studies (180 participants), we designed an experiment with two sets of stimuli with different stimulus ranges. In each of these sets, we used two kinds of stimuli (line segments and squares). Our conclusions were: (1) we rejected the use of K as a sensitivity measure because the results provided by this index were the opposite of those expected when we compared the two stimulus ranges. (2) We also rejected the use of M because this measure is a linear transformation of Kendall's coefficient of concordance. (3) Lastly, we suggest the mathematical transformation proposed by Fisher to achieve a normal distribution, and recommend this transformation as the best sensitivity measure. 相似文献
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Mental workload and visual impairment: differences between pupil, blink, and subjective rating 总被引:1,自引:0,他引:1
This research has two aims: (a) To study the concurrent validity of three measures of mental workload, NASA TLX rating scale, pupil dilation and blink rate, testing the hypothesis that they will provide convergent results using a single-task, and dissociative results for dual-task; and (b) To analyse their capability to predict visual search impairment. These three measures were analyzed in the same cognitive tasks in single-task and dual-task (cognitive task and visual search) conditions in a within-subjects experiment with twenty-nine participants. Mental workload measures showed concurrent validity under single-task condition, but a complex pattern of results arose in the dual-task condition: it is suggested that NASA TLX would be a subjective addition of the rating of each task; pupil dilation would measure the average arousal underlying the cognitive tasks; and the blink rate would produce opposite effects: whereas mental workload of cognitive tasks would increase blink rate, visual demand would inhibit it. All three measures were good predictors of visual impairment. The soundness of these measures is discussed with regard to the applied field of driving and other activities. 相似文献
46.
by Leonard Angel 《Zygon》2009,44(3):699-718
Extension of the system that includes the key substrates for sensation, perception, emotion, volition, and cognition, and all representational sources for cognition, supports the view that there is an extended mind and an extended body. These intellectual views can be made practical in a humanist system based on extensions and in religious systems based on extensions. Independently, there is also an institutional extension of secularism. Hence, I maintain, there are five principal forms of extension. 相似文献
47.
Lucie Corbin 《Acta psychologica》2009,131(2):153-162
This study provides a new perspective on both the cognitive processes actually implemented and the effect of a simple experimental control - the recall constraint - in Sternberg’s memory scanning task. These findings were highlighted by adopting a new approach based on the comparison of qualitative and quantitative results.The analysis of individual processing, on 72 adults, each participating in one of two experimental conditions (with or without sequence recall), highlighted a large variability in quantitative results as well as qualitative procedures. Based on the participants’ retrospective verbalisations, two categories of strategies were identified: (1) the procedures used to memorize the sequence of digits, and (2) the procedures used to compare this sequence with the test digit, which includes strategies for coding the items and processes for searching them in memory. The analysis of the strategies shows that their frequencies of use depend not only on the experimental condition, but also on the participants, the level of task difficulty and the interaction between participants and level of difficulty. This variability questions the accuracy of Sternberg’s mean model. Furthermore, this approach suggests some answers to the old debate concerning the exhaustive search pattern for the yes response. Indeed, our results show three types of strategies that can be identified according to the different models of search suggested in the literature. The “exhaustive” search, that would only be involved in the recall condition and only for some of the participants, the “self-terminating” search and the “immediate” strategy, which can be identified with a model of parallel search with limited resources. Thus our study suggests that the different search models are appropriate but depend on both the specific experimental conditions and participant’s strategy. Our results should help to improve the interpretation of data collected with this paradigm in cognitive and neuroscientific studies of memory. 相似文献
48.
In the present study, we used the Deese/Roediger-McDermott paradigm to analyze the relationship between theme identifiability
of word lists and false memories in adults and children. We conducted two normative studies to determine the identifiability
levels for critical unpresented words in 40 associative lists in adults and in 16 associative lists in children. Then, in
three experiments, false memories for critical words that were either easy or hard to identify were analyzed in adults and
in children 4–5 years old and 11–12 years old. Opposite results were found for adults and children. Lists with highly identifiable
critical words produced fewer false memories for adults but more false memories for children. These results suggest that,
if they can identify critical words, adults use an identify-to-reject strategy to edit out false memories, whereas, in children,
theme identification does not lead to the use of such a monitoring strategy. 相似文献
49.
Majerus S Heiligenstein L Gautherot N Poncelet M Van der Linden M 《Journal of experimental child psychology》2009,103(1):66-86
This study investigated the role of auditory selective attention capacities as a possible mediator of the well-established association between verbal short-term memory (STM) and vocabulary development. A total of 47 6- and 7-year-olds were administered verbal immediate serial recall and auditory attention tasks. Both task types probed processing of item and serial order information because recent studies have shown this distinction to be critical when exploring relations between STM and lexical development. Multiple regression and variance partitioning analyses highlighted two variables as determinants of vocabulary development: (a) a serial order processing variable shared by STM order recall and a selective attention task for sequence information and (b) an attentional variable shared by selective attention measures targeting item or sequence information. The current study highlights the need for integrative STM models, accounting for conjoined influences of attentional capacities and serial order processing capacities on STM performance and the establishment of the lexical language network. 相似文献
50.
Siu-kuen Azor Hui Rex A. Wright Christopher C. Stewart Angel Simmons Bradley Eaton R. Nicholas Nolte 《Motivation and emotion》2009,33(4):419-434
Female undergraduates were assigned to one of three groups, two involving regulatory training and one not. Training participants
performed for 2 weeks tasks that required strong behavioral restraint (Strong Training) or weak behavioral restraint (Weak
Training). Later, they took part in (1) a laboratory session in which they performed tasks with inhibitory components, and
(2) a follow-up week in which they provided health behavior reports and used designated dental supplies. No Training participants
took part only in the session and follow-up week. As expected, laboratory performance was improved for Strong- relative to
No Training participants, with performance for Weak Training participants falling in between. Also as expected, Strong Training
participants used more floss in the follow-up week than did the No Training participants, with floss for Weak Training participants
falling between. Contrary to expectation, Strong Training participants used less toothpaste and reported having brushed less
than the No Training participants. In addition, Strong Training participants evinced exaggerated—rather than diminished—cardiovascular
responses during the laboratory tasks. The performance and floss use data support the suggestion that inhibitory system strength
can be increased through use. The brushing and cardiovascular findings may be interpretable in inhibitory strength terms. 相似文献