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61.
Early dialogues between parent and child constitute an important factor for the acquisition of culture and hence verbal interaction is considered to be a universal parenting system. Parenting strategies and socialization practices are strongly influenced by the cultural conception of the self, prototypically defined as the model of independence and interdependence. Our study focuses on the temporal organization of spontaneous verbal/vocal behavior of 20 German middle-class and 28 Cameroonian Nso mother–infant dyads. The infants and their mothers were observed weekly in a 5 min free-play interaction scene from 0 to 3 months of age. We hypothesized to find different amounts of vocalization time, synchronous vocalizations, and contingent maternal responses in the verbal/vocal patterns of the two samples. The findings indicate cross-cultural differences in the temporal structure of verbal/vocal interactions already during the first three months of life, reflecting underlying differences in the culture-specific modes of verbal interaction. 相似文献
62.
Recently, Yeshurun and Levy (Psychol Sci 14:225-231, 2003) have provided evidence for the notion that visual attention impairs the temporal resolution of the visual system. Specifically, the detection of a temporal gap within a visual stimulus was impaired when a cue directed attention towards the spatial location of the stimulus. As this negative cueing effect is important to constrain theories about visual attention, we further investigated this novel effect and assessed whether it truly reflects an attentional effect. Experiment 1 examines whether the negative cueing effect is due to local temporal interference, and Experiments 2 and 3 investigate whether it reflects a luminance confound. The complete pattern of results argues against these alternatives and thus further strengthens the conclusion of Yeshurun and Levy (Psychol Sci 14: 225-231, 2003). 相似文献
63.
Functional imaging studies have delineated a "minimal network for overt speech production", encompassing mesiofrontal structures (supplementary motor area, anterior cingulate gyrus), bilateral pre- and postcentral convolutions, extending rostrally into posterior parts of the inferior frontal gyrus (IFG) of the language-dominant hemisphere, left anterior insula as well as bilateral components of the basal ganglia, the cerebellum, and the thalamus. In order to further elucidate the specific contribution of these cerebral regions to speech motor planning, subjects were asked to read aloud visually presented bisyllabic pseudowords during functional magnetic resonance imaging (fMRI). The test stimuli systematically varied in onset complexity (CCV versus CV) and frequency of occurrence (high-frequency, HF versus low-frequency, LF) of the initial syllable. A cognitive subtraction approach revealed a significant main effect of syllable onset complexity (CCV versus CV) at the level of left posterior IFG, left anterior insula, and both cerebellar hemispheres. Conceivably, these areas closely cooperate in the sequencing of subsyllabic aspects of the sound structure of verbal utterances. A significant main effect of syllable frequency (LF versus HF), by contrast, did not emerge. However, calculation of the time series of hemodynamic activation within the various cerebral structures engaged in speech motor control revealed this factor to enhance functional connectivity between Broca's area and ipsilateral anterior insula. 相似文献
64.
How do people make quantitative estimations, such as estimating a car's selling price? Traditionally, linear-regression-type models have been used to answer this question. These models assume that people weight and integrate all information available to estimate a criterion. The authors propose an alternative cognitive theory for quantitative estimation. The mapping model, inspired by the work of N. R. Brown and R. S. Siegler (1993) on metrics and mappings, offers a heuristic approach to decision making. The authors test this model against established alternative models of estimation, namely, linear regression, an exemplar model, and a simple estimation heuristic. With 4 experimental studies the authors compare the models under different environmental conditions. The mapping model proves to be a valid model to predict people's estimates. 相似文献
65.
Johansson A Santtila P Harlaar N von der Pahlen B Witting K Algars M Alanko K Jern P Varjonen M Sandnabba NK 《Aggressive behavior》2008,34(2):190-202
The genetic and environmental influences on sexual coercion, and to what extent its associations with alcohol use and psychopathy depend on shared genetic and environmental effects, were explored in a Finnish population-based sample of 938 men, aged 33-43 years, using the classical twin study design. All three phenotypes were associated positively and affected by genes (sexual coercion 28%, alcohol use 60%, psychopathy 54%), with 46% of the correlation between sexual coercion and psychopathy, 89% of the correlation between alcohol use and psychopathy and 100% of the correlation between sexual coercion and alcohol use being explained by shared genetic effects. Further, the results showed that a proportion of the variance in sexual coercion was derived from a highly genetic source that was common with alcohol use and psychopathy. This latent factor was hypothesized to reflect a general tendency for antisocial behavior that is pervasive across different situations. Relevant theories on sexual coercion were discussed in light of the results. 相似文献
66.
This article reviews studies that assessed the process and content of genetic counseling communication. A systematic search
of the literature was undertaken of studies that audio- or videotaped genetic counseling sessions conducted by genetics health
care providers and subjected them to communication analyses. A total of 18 studies (published in 34 articles) were identified
that met the eligibility criteria. Studies show that providers speak more than clients, that a large proportion of communication
is biomedical rather than psychosocial and that the teaching model of genetic counseling is widely implemented. Higher levels
of counselor facilitation of understanding and empathic responses, lower levels of verbal dominance (ratio of counselor to
client talk) and the provision of a summary letter of the consultation are associated with more positive client outcomes.
Findings from these studies should be used as an evidence base for teaching and continuing education of genetic counseling
providers. 相似文献
67.
Responses to an imperative stimulus (IS) are especially fast when they are preceded by a warning signal (WS). When the interval between WS and IS (the foreperiod, FP) is variable, reaction time (RT) is not only influenced by the current FP but also by the FP of the preceding trial. These sequential effects have recently been proposed to originate from a trace conditioning process, in which the individuals learn the temporal WS-IS relationship in a trial-by-trial manner. Research has shown that trace conditioning is maximal when the temporal interval between the conditioned and unconditioned stimulus is between 0.25 and 0.60 s. Consequently, one would predict that sequential effects occur especially within short FP contexts. However, this prediction is contradicted by Karlin [Karlin, L. (1959). Reaction time as a function of foreperiod duration and variability. Journal of Experimental Psychology, 58, 185-191] who did not observe the typical sequential effects with short FPs. To investigate temporal preparation for short FPs, three experiments were conducted, examining the sequential FP effect comparably for short and long FP-sets (Experiment 1), assessing the influence of catch trials (Experiment 2) and the case of a very dense FP-range (Experiment 3) on sequential FP effects. The results provide strong evidence for sequential effects within a short FP context and thus support the trace conditioning account of temporal preparation. 相似文献
68.
Dr Ursula. Kessels Bettina. Hannover 《The British journal of educational psychology》2008,78(2):273-289
Background . Establishing or preserving single‐sex schooling has been widely discussed as a way of bringing more girls into the natural sciences. Aims . We test the assumption that the beneficial effects of single‐sex education on girls' self‐concept of ability in masculine subjects such as physics are due to the lower accessibility of gender‐related self‐knowledge in single‐sex classes. Sample . N = 401 eighth‐graders (mean age 14.0 years) from coeducational comprehensive schools. Methods . Random assignment of students to single‐sex vs. coeducational physics classes throughout the eighth grade. At the end of the year, students' physics‐related self‐concept of ability was measured using a questionnaire. In a subsample of N = 134 students, the accessibility of gender‐related self‐knowledge during physics classes was assessed by measuring latencies and endorsement of sex‐typed trait adjectives. Results . Girls from single‐sex physics classes reported a better physics‐related self‐concept of ability than girls from coeducational classes, while boys' self‐concept of ability did not vary according to class composition. For both boys and girls, gender‐related self‐knowledge was less accessible in single‐sex classes than in mixed‐sex classes. To the extent that girls' feminine self‐knowledge was relatively less accessible than their masculine self‐knowledge, their physics‐related self‐concept of ability improved at the end of the school year. Conclusions . By revealing the importance of the differential accessibility of gender‐related self‐knowledge in single‐ and mixed‐sex settings, our study clarifies why single‐sex schooling helps adolescents to gain a better self‐concept of ability in school subjects that are considered inappropriate for their own sex. 相似文献
69.
Karin M. Bausenhart Bettina Rolke Rolf Ulrich 《Attention, perception & psychophysics》2008,70(8):1504-1514
Recent research shows that temporal preparation within a constant foreperiod design improves the spatial resolution of visual perception. The present experiments were designed to investigate whether similar benefits of temporal preparation can be observed in a task that requires high temporal resolution. In three experiments, we assessed the effect of temporal preparation on temporal order judgments (TOJs). In Experiment 1, short foreperiods facilitated TOJ for two spatially adjacent dots. This finding was replicated in Experiment 2, in which the temporal order of two spatially overlapping stimuli (“+” and “x”) had to be discriminated. Experiment 3 investigated the time course of temporal preparation by extending these findings to a wide range of different foreperiod durations. The present findings corroborate recent evidence for a perceptual locus of temporal preparation. Most importantly, they show that temporal preparation within a constant foreperiod design improves the temporal resolution of visual perception, independently of whether TOJ requires a decision about the location or about the identity of the target stimuli. 相似文献
70.
T. Bettina Cornwell L. Wakiuru Wamwara‐Mbugua Stefan G. Nicovich 《Journal of Consumer Behaviour》2008,7(1):51-71
- Dependency is proposed as an implicit yet undeveloped concept important in understanding consumer behavior. The development of this idea takes as a jumping‐off point, the family life cycle literature because it has implicitly recognized the importance of dependent children. A taxonomy of dependence is offered as several propositions regarding dependency patterns. While the central offering of this paper is theoretical, the concept is explored via focus groups with 24 women. Findings suggest that the concept is worthy of future development.