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61.
The simplicity principle in human concept learning 总被引:1,自引:0,他引:1
Jacob Feldman 《Current directions in psychological science》2003,12(6):227-232
How do we learn concepts and categories from examples? Part of the answer might be that we induce the simplest category consistent with a given set of example objects. This seemingly obvious idea, akin to simplicity principles in many fields, plays surprisingly little role in contemporary theories of concept learning, which are mostly based on the storage of exemplars, and avoid summarization or overt abstraction of any kind. This article reviews some evidence that complexity minimization does indeed play a central role in human concept learning. The chief finding is that subjects' ability to learn concepts depends heavily on the concepts' intrinsic complexity; more complex concepts are more difficult to learn. This pervasive effect suggests, contrary to exemplar theories, that concept learning critically involves the extraction of a simplified or abstracted generalization from examples. 相似文献
62.
Shlomo Bentin Laurie B. Feldman 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》1990,42(4):693-711
The effect of morphological repetition at lag 0 and at lag 15 on lexical decision was investigated in Hebrew with three types of relation between prime and target. In the semantic-plus-morphological condition (SM), the prime and the target in each pair were two semantically related derivatives of the same root. In the “pure morphological” condition (M), the prime and the target derived from the same root, but their semantic association was very low, or nonexistent. In the semantic priming condition (S), primes and targets were semantically associated but were not morphologically related. The pure semantic relationship produced a significant facilitation at lag 0 that disappeared completely at lag 15. The pure morphological relation produced (smaller but) significant facilitation at lag 0 that was not attenuated at lag 15. When prime and target were semantically as well as morphologically related, the facilitation at lag 0 was similar to semantic priming, whereas at lag 15 it was similar to the pure morphological effect. Significant repetition effects at both lags were also found with non-words that shared the same (nonsensical) root and differed with respect to real derivational affixes. The differential time course for facilitation due to semantic and morphological relatedness suggests distinct underlying processes, although at lag 0 it is possible that semantic relatedness may augment the morphological repetition effect. Morphological repetition probably facilitates the retrieval of lexical information that, under certain circumstances, is necessary for lexical decision. 相似文献
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64.
Dylan Smith George Loewenstein Christopher Jepson Aleksandra Jankovich Harold Feldman Peter Ubel 《Health psychology》2008,27(5):653-658
OBJECTIVE: People tend to overestimate the impact that future events will have on their quality of life. In the case of a medical treatment like kidney transplant, this should result in biased predictions--overestimates of how much the transplant will benefit quality of life. The authors surveyed kidney transplant patients, both before and after transplant, to test whether they would overestimate the benefits of a successful transplant for their quality of life. DESIGN: The authors interviewed 307 patients on a waiting list for cadaveric renal or renal-pancreatic transplant, and 195 patients one year after a successful transplant. A sub sample of patients were interviewed both before and after transplant. MAIN OUTCOME MEASURES: The survey included measures of quality of life, both in terms of an overall estimate (0-100), and across sub domains, including health, employment, and travel. RESULTS: Cross-sectional results suggested that overall quality of life improved after transplant, but the predictions of pretransplant patients overestimated the magnitude of the improvement (p < .01). In addition, patients predicted large improvements in specific life domains that did not change. These results were confirmed in longitudinal, prospective analyses. Additional analyses showed that posttransplant patients recalled their pretransplant quality of life to be much lower than what they had reported at the time. CONCLUSION: Consistent with an impact bias, patients substantially overestimated the benefits of a successful kidney transplant, both in terms of predictions of life after treatment, and in their memories of QOL before the transplant. 相似文献
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66.
Three groups of 20 dyads planned the MTV Music Video Awards Show over computers. The groups varied in whether they could send 4-line, 10-line, or 18-line messages, in part to examine whether increased planning efficiency in computer-mediated communication reflects communication strategies associated with constraints on message size. The results demonstrate that increased efficiency is not a function of such design features as the maximum message that may be sent. However, the subjects in the 4-line condition sent shorter messages to one another, were less likely to engage in a strategy of making multiple suggestions that required a single assent, and were more likely to differ in the relative proportion of their contributions to the discourse. The subjects in the 10-line condition had shorter maximum messages (and proportionately more disfluencies) than did those in the 18-line condition, despite the finding that the maximum messages of the latter would have also fit within 10 lines. Thus, the results also support a claim that size of the text window may result in different discourse management strategies and may influence an initial discourse-planning stage. 相似文献
67.
Philosophical Studies - 相似文献
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69.
Does Religious Belief Matter for Grief and Death Anxiety? Experimental Philosophy Meets Psychology of Religion
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David B. Feldman Ian C. Fischer Robert A. Gressis 《Journal for the scientific study of religion》2016,55(3):531-539
It is commonly reasoned that religious belief moderates death anxiety and aids in coping with loss. However, a philosophical perspective known as meta‐atheism includes the claim that avowed religious believers grieve deaths and experience death anxiety as intensely as avowed atheists. Thus, we report a study comparing religious believers and nonbelievers on measures of death anxiety and grief. We further investigated the relationships between certain religious beliefs (views of God, afterlife belief, religious orientation) and death anxiety, as well as both painful grief reactions and grief‐related growth. We surveyed 101 participants across the United States, ranging in age (19 to 57), education, and ethnicity. Participants avowing some form of religious belief, in comparison to those not, did not demonstrate lower levels of death anxiety. They did, however, display higher levels of a certain type of death acceptance. Additionally, those professing belief reported less grief and greater growth in response to loss. Greater afterlife belief was not associated with less grief; however, it was associated with both greater grief‐related growth and lower death anxiety. 相似文献
70.
Ruth Feldman 《Infant mental health journal》2000,21(3):176-191
This study examines determinants of father involvement, the parents' convergence on marital satisfaction, and mothers' and fathers' interactive behavior in dual‐earner families at the transition to parenthood. Sixty dual‐earner Israeli couples and their five‐month‐old firstborn child were interviewed and videotaped in infant–mother and infant–father interactions. Interactions were coded globally for 21 interactive behaviors and composited into measures of parent sensitivity and infant readiness to interact. Five determinants of each parent's involvement in house and childcare were assessed as predictors of parent–infant interactions: the sharing of household and childcare responsibilities, the amount of time each parent spends with the infant during the week and on weekends, and the range of childcare activities the parent typically performs. Marital convergence was indexed by the absolute difference score between mothers' and fathers' marital satisfaction. Father sensitivity was related to the sharing of household and childcare responsibilities, to the amount of time the father spends with the child on weekends (but not during the week), to the range of childcare activities father performs, and to marital convergence. Mother sensitivity was related only to the sharing of responsibilities between spouses. The range of the father's childcare activities predicted maternal interactive sensitivity. Infant readiness to interact with the father, but not with the mother, was related to the sharing of childcare responsibilities, to the range of father's childcare activities, and to marital convergence. Results further specify the differential associations between the marital and the parent–child relationship for mothers and fathers and point to the importance of the father's instrumental involvement in childcare to the development of fathering. © 2000 Michigan Association for Infant Mental Health. 相似文献