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111.
Ignorance is bliss: the role of observer expectation in dynamic spatial tuning of the attentional focus 总被引:1,自引:0,他引:1
When two sequential targets (T1, T2) are inserted in an RSVP stream of distractors, perception of T2 is impaired at intertarget lags shorter than 700 msec. Paradoxically, this deficit disappears when T2 is presented directly after T1 (lag-1 sparing). Visser, Bischof, and Di Lollo (1999) found that lag-1 sparing occurs only when T1 and T2 are presented in the same stream. In contrast, Shih (2000) obtained lag-1 sparing with targets insepa-rate streams. Four experiments addressed this inconsistency and revealed lag-1 sparing with targets in different streams, but only when observers had no foreknowledge of T1's location. We hypothesized that when T1 location is known, attention is focused narrowly on that stream; if T2 then appears in the other stream it is missed, and lag-1 sparing does not occur. When T1 location is not known, attention is focused broadly, encompassing both streams, and lag-1 sparing ensues. 相似文献
112.
In an inhibition of return (IOR) paradigm, we used a threshold-tracking procedure combined with backward masking to measure
the speed of perceptual processing in IOR independent of motoric factors. Instead of the conventional reaction time measure,
this procedure yielded the critical exposure duration (DURc) that is required in order for a target to be identified reliably before the onset of a trailing mask. In Experiment 1, the
facilitation effects conventionally found at short cue—target onset asynchrony (CTOA) were evidenced by shorter values of
DURc at cued relative to uncued locations. Conversely, the retardation effects conventionally found at long CTOA were evidenced
by correspondingly longer values of DURc. In Experiment 2, the DURc results strongly suggest that the directional reading bias previously observed in IOR studies is due, at least in part, to
perceptual rather than motoric factors. 相似文献
113.
Vincent Dru 《Journal of experimental social psychology》2007,43(6):877-883
One hundred and seventy nine students first answered RWA and SDO scales were assigned to experimental conditions that primed different forms of self-categorization, and finally responded for prejudice scales for three target ethnic groups. The results showed first, that RWA and SDO correlate with prejudice in a control condition. Second, RWA and SDO correlated differently with prejudice depending on the way in which membership to social group was primed. When a prime as member of a group oriented to devotion to the in-group norms and values was used, the correlation of RWA and in-group identification with prejudice was significant, but when a prime as member of a competitive group was used, only SDO correlated significantly with prejudice. The results were discussed as identifying two different schemas of social categorization according to which RWA and SDO expressed sets of social beliefs and attitudes relevant for inter-group relations. 相似文献
114.
Shahab Ghorashi Thomas M. Spalek James T. Enns Vincent Di Lollo 《Attention, perception & psychophysics》2009,71(6):1233-1240
Visual search for a target involves two processes: spatial selection and identity extraction. Ghorashi, Enns, and Di Lollo (2008) found these processes to be independent and surmised that they were carried out along distinct visual pathways: dorsal and ventral, respectively. The two experiments that are described in the present article evaluated this hypothesis. Attentional-blink methodology was combined with voluntary spatial cuing in a visual search task: Intertarget lag was used to manipulate identity extraction; predictive cues were used to signal target locations. Central digit cues in Experiment 1 required participants to identify digits before voluntarily directing attention to a corresponding location, whereas flashed dots in Experiment 2 (indicating an opposite location) required attentional redeployment without prior cue identification. Consistent with the dual-pathway hypothesis, cuing was impaired only when the first target and the number cue competed for ventral-pathway mechanisms. Collectively, the results support the dual-pathway account of the separability of spatial selection and identity extraction. 相似文献
115.
G. Brian Thompson Vincent Connelly Claire M. Fletcher-Flinn Sheryl J. Hodson 《Memory & cognition》2009,37(2):223-234
Does the type of reading instruction experienced during the initial years at school have any continuing effect on the ways in which adults read words? The question has arisen in current discussions about computational models of mature word-reading processes. We tested predicted continuing effects by comparing matched samples of skilled adult readers of English who had received explicit phonics instruction in childhood and those who had not. In responding to nonwords that can receive alternative legitimate pronunciations, those adults having childhood phonics instruction used more regular grapheme-phoneme correspondences that were context free and used fewer vocabulary-based contextually dependent correspondences than did adults who had no phonics instruction. These differences in regularization of naming responses also extended to some low-frequency words. This apparent cognitive footprint of childhood phonics instruction is a phenomenon requiring consideration when researchers attempt to model adult word reading and when they select participants to test the models. 相似文献
116.
117.
Dirk Smeesters Vincent Y. Yzerbyt Luk Warlop 《Journal of experimental social psychology》2009,45(1):211-216
Using cooperative behavior in economic decision-making settings, we predicted and found that people’s susceptibility to priming influences is moderated by two factors: people’s chronic accessibility to a behavioral repertoire and people’s self-concept activation. In Experiment 1, we show that individuals highly consistent in their social value orientation (SVO) assimilate their behavior to their dispositions rather than to the primes, whereas the opposite effect is obtained among individuals with a low consistent SVO. In Experiment 2, we show that low consistent SVO individuals become less susceptible to priming influences when their self-concept is activated. These studies shed new light on individuals’ susceptibility to priming influences on social behavior. 相似文献
118.
Schmithorst VJ 《Intelligence》2009,37(2):164-173
Recent neuroimaging research has shown sex-related differences in the relationship between brain structure and cognitive function. Anatomical studies have shown a greater reliance for cognitive function on white matter structure in adult females, and a greater reliance on gray matter structure in adult males. Functional neuroimaging studies have also shown a greater correlation between brain connectivity and cognitive function in females. However, this relationship is not present in young childhood (5 years old) but appears during the developmental period. Here sex differences in structure–function relationships and their developmental trajectory are investigated using diffusion tensor imaging (DTI) on a large cohort of over 100 normal children ages 5–18. Significant sex–X–IQ interactions on fractional anisotropy (FA), a marker for white matter organization, were seen in the left frontal lobe, in fronto-parietal areas bilaterally, and in the arcuate fasciculus bilaterally, with girls showing positive correlations of FA with IQ, and boys showing a negative correlation. Significant sex–X–IQ–X–age interactions on FA were also seen in the left frontal lobe and in fronto-parietal areas bilaterally, showing a developmental effect. These results strongly corroborate previous findings regarding sex differences in structure–function relationships regarding intelligence. Results also indicate that a naïve interpretation of “more is better” with respect to FA may not be accurate, especially in adult males. 相似文献
119.
We often feel that our perceptual experience is richer than what we can express. For instance, when flashed with a large set of letters, we feel that we can see them all, while we can report only a few. However, the nature of this subjective impression remains highly debated: while many favour a dissociation between two forms of consciousness (access vs. phenomenal consciousness), others contend that the richness of phenomenal experience is a mere illusion. Here we addressed this question with a classical partial-report paradigm now modified to include unexpected items in the unreported parts of the stimuli. We show that even in the presence of unexpected pseudo-letters, participants still felt that there were only letters. Additionally, we show that this feeling reflects an illusion whereby participants reconstruct letters using partial letter-like information. We propose that the feeling of seeing emerges from the interplay between partially accessible information and expectations. 相似文献
120.
Vincent Chong Khatharya Um Monica Hahn David Pheng Clifford Yee Colette Auerswald 《Aggression and violent behavior》2009,14(6):461-469
There is a nascent, but growing, literature on Southeast Asian youth violence that focuses on the role of acculturation, portraying violence as a problem of maladaptation. However, scholars overlook the ways in which violence holds meaning for the youth who experience it and how violence may be related to racial and gender identity formation. We conducted a qualitative study with young Southeast Asian men to elicit the role violence plays in their understanding of what it means for them to be Southeast Asian and male. We conducted focus groups and semi-structured individual interviews with an ethnically diverse group of 21 young Southeast Asian men 13–17 years of age from Alameda and Contra Costa Counties, California. Data were analyzed using the extended case method approach. Our findings illustrate that violence and engagement with community-based organizations are situational tools that these young Southeast Asian men use to navigate their social contexts in an attempt to be resilient in ecological contexts marked by alienation and discrimination, as well as to construct accepted and successful racial and gender identities. Furthermore, we found that their actions were guided by gendered codes of conduct, such as a “code of the street.” 相似文献