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811.
Younger adults recall more information from episodic memory tasks than do older adults. Because longitudinal studies are rare and often incompatible, the extent of actual late-life memory change is not well established. We assemble two different longitudinal samples of normal older adults, each of which is tested twice at a 3-year interval, using a large battery of episodic memory indicators. Together, two-wave data from both the Victoria Longitudinal Study in Canada (n = 400) and the Kungsholmen Project in Sweden (n = 168) cover a 40-year span of adulthood, ranging from 54 to 94 years of age. Principal memory tasks include categorizable word lists, story recall, and random word lists, as well as indicators of cognitive support. Overall, an examination of performance on sets of common and complementary episodic tasks reveals that, for both samples, actual 3-year changes are modest and that, when decline occurs, it is gradual. The exception-greater decline for more supported tasks-suggests that these may be especially sensitive to late-life changes. 相似文献
812.
Comparing categorization models 总被引:2,自引:0,他引:2
Four experiments are presented that competitively test rule- and exemplar-based models of human categorization behavior. Participants classified stimuli that varied on a unidimensional axis into 2 categories. The stimuli did not consistently belong to a category; instead, they were probabilistically assigned. By manipulating these assignment probabilities, it was possible to produce stimuli for which exemplar- and rule-based explanations made qualitatively different predictions. F. G. Ashby and J. T. Townsend's (1986) rule-based general recognition theory provided a better account of the data than R. M. Nosofsky's (1986) exemplar-based generalized context model in conditions in which the to-be-classified stimuli were relatively confusable. However, generalized context model provided a better account when the stimuli were relatively few and distinct. These findings are consistent with multiple process accounts of categorization and demonstrate that stimulus confusion is a determining factor as 10 which process mediates categorization. 相似文献
813.
Peter?F.?TitzmannEmail author Derek?Roger Daniel?Thor?Olason Veronica?Greco 《Current psychology (New Brunswick, N.J.)》2004,23(2):97-110
This study describes the construction and validation of a German version of the Positive and Negative Expectancies Scale,
PANEQ-G, which is based on the original English version of the PANEQ. The German version showed the same factor structure
as the original, comprising the three subscales of Negative Affectivity/Pessimism, Positive Affectivity/Optimism, and Fighting
Spirit. The reliability data for the new scale were acceptable, and the factor structure was confirmed by means of a confirmatory
factor analysis in an independent sample. As expected, concurrent validation uncovered substantial correlations of the three
established scales. Negative Affectivity/Pessimism was related to Neuroticism and Positive Affectivity/Optimism was related
to Extraversion. Fighting Spirit, the third scale, was related to Self-Efficacy and Conscientiousness. The PANEQ-G provides
a reliable and valid instrument that can be used in conjunction with the original PANEQ for cross-cultural studies on Optimism
and Pessimism. It also offers a new third component, Fighting Spirit, which can enrich research in this area. 相似文献
814.
Meditation is now one of the most enduring, widespread, and researched of all psychotherapeutic methods. However, to date the meeting of the meditative disciplines and Western psychology has been marred by significant misunderstandings and by an assimilative integration in which much of the richness and uniqueness of meditation and its psychologies and philosophies have been overlooked. Also overlooked have been their major implications for an understanding of such central psychological issues as cognition and attention, mental training and development, health and pathology, and psychological capacities and potentials. Investigating meditative traditions with greater cultural and conceptual sensitivity opens the possibility of a mutual enrichment of both the meditative traditions and Western psychology, with far-reaching benefits for both. 相似文献
815.
Recent debate regarding dual-task performance has focused on whether costs result from limitations in central capacity, and whether central operations can be performed in parallel. While these questions are controversial, the dominant models of dual-task performance share the assumption that central operations are generic--that is, their interactions are independent of stimulus and response modalities. To examine these issues, we conducted a series of dual-task experiments with different input and output modality pairings. One condition combined a visual-manual task with an auditory-vocal task, and the other condition reversed the input-output pairings, combining a visual-vocal task with an auditory-manual task. Input/output modality pairings proved to be a key factor; throughout practice, dual-task costs were generally more than twice as large with visual-vocal/auditory-manual tasks than with the opposite arrangement of modalities (Experiments 1 and 2). These differences could be explained neither by competition for peripheral resources nor by differences in single-task response times (Experiment 3). Moreover, the persistent dual-task costs did not appear to stem from a central bottleneck. Contrary to the dominant models of dual-task performance, we propose that central interference between tasks depends not just on the duration of central operations, nor just strategic adaptation, but also on the content of those operations. Implications for structural and strategic accounts of dual-task interference are discussed. 相似文献
816.
Tempo is one factor that is frequently associated with the expressive nature of a piece of music. Composers often indicate the tempo of a piece of music through the use of numerical markings (beats min(-1)) and subjective terms (adagio, allegro). Three studies were conducted to assess whether listeners were able to make consistent judgments about tempo that varied from piece to piece. Listeners heard short extracts of Scottish music played at a range of tempi and were asked to make a two-alternative forced choice of "too fast" or "too slow" for each extract. The responses for each study were plotted as proportion of too fast responses as a function of tempo for each piece, and cumulative normal curves were fitted to each data set. The point where these curves cross 0.5 is the tempo at which the music sounds right to the listeners, referred to as the optimal tempo. The results from each study show that listeners are capable of making consistent tempo judgments and that the optimal tempo varies across extracts. The results also revealed that rhythm plays a role, but not the only role in making temporal judgments. 相似文献
817.
818.
Studies on attribution in the moral domain often involve the use of specific behavior examples. To make valid comparisons
across trait dimensions (such as honesty and friendliness), it is important to equate the intensities of the specific behaviors
used. Pretesting specific behaviors can be a costly effort, but it is often necessary for research in social psychology. Our
study provides a rich source of such pretested behaviors. Positive and negative examples of behaviors in the categories of
honesty, loyalty, friendliness, charitableness, and cooperativeness were solicited from participants and then rated on the
relevant trait dimension by an independent group. The result is data representing rankings, raw scores, andz-scores in an index of 500 behaviors across 10 trait categories that can be used by researchers to study moral and immoral
behaviors. The full index of behaviors is available at www .psychonomic.org/archive/. 相似文献
819.
Nosofsky and Zaki (2002) found that an exemplar similarity model provided better accounts of individual subject classification and generalization performance than did a mixed prototype model proposed by Smith and Minda (1998; Minda & Smith, 2001). However, these previous tests used a nonlinearly separable category structure. In the present work, the authors extend the previous findings by demonstrating a superiority for the exemplar generalization model over the mixed prototype model in a case involving a linearly separable structure. Because this structure has numerous features that Minda and Smith argued should be conducive to prototype-based processing, the results pose a significant challenge to the mixed prototype view. 相似文献
820.