Young infants prefer to look at faces that adults find attractive, suggesting a biological basis for some face preferences. However, the basis for infant preferences is not known. Adults find average and symmetric faces attractive. We examined whether 5-8-month-old infants discriminate between different levels of averageness and symmetry in faces, and whether they prefer to look at faces with higher levels of these traits. Each infant saw 24 pairs of female faces. Each pair consisted of two versions of the same face differing either in averageness (12 pairs) or symmetry (12 pairs). Data from the mothers confirmed that adults preferred the more average and more symmetric versions in each pair. The infants were sensitive to differences in both averageness and symmetry, but showed no looking preference for the more average or more symmetric versions. On the contrary, longest looks were significantly longer for the less average versions, and both longest looks and first looks were marginally longer for the less symmetric versions. Mean looking times were also longer for the less average and less symmetric versions, but those differences were not significant. We suggest that the infant looking behaviour may reflect a novelty preference rather than an aesthetic preference. 相似文献
Air Traffic Control Laboratory Simulator (ATC-lab) is a new low- and medium-fidelity task environment that simulates air traffic
control. ATC-lab allows the researcher to study human performance of tasks under tightly controlled experimental conditions
in a dynamic, spatial environment. The researcher can create standardized air traffic scenarios by manipulating a wide variety
of parameters. These include temporal and spatial variables. There are two main versions of ATC-lab. The medium-fidelity simulator
provides a simplified version of en route air traffic control, requiring participants to visually search a screen and both
recognize and resolve conflicts so that adequate separation is maintained between all aircraft. The low-fidelity simulator
presents pairs of aircraft in isolation, controlling the participant’s focus of attention, which provides a more systematic
measurement of conflict recognition and resolution performance. Preliminary studies have demonstrated that ATC-lab is a flexible
tool for applied cognition research. 相似文献
Blurred edges appear sharper in motion than when they are stationary. We proposed a model of this motion sharpening that invokes a local, nonlinear contrast transducer function (Hammett et al, 1998 Vision Research 38 2099-2108). Response saturation in the transducer compresses or 'clips' the input spatial waveform, rendering the edges as sharper. To explain the increasing distortion of drifting edges at higher speeds, the degree of nonlinearity must increase with speed or temporal frequency. A dynamic contrast gain control before the transducer can account for both the speed dependence and approximate contrast invariance of motion sharpening (Hammett et al, 2003 Vision Research, in press). We show here that this model also predicts perceived sharpening of briefly flashed and flickering edges, and we show that the model can account fairly well for experimental data from all three modes of presentation (motion, flash, and flicker). At moderate durations and lower temporal frequencies the gain control attenuates the input signal, thus protecting it from later compression by the transducer. The gain control is somewhat sluggish, and so it suffers both a slow onset, and loss of power at high temporal frequencies. Consequently, brief presentations and high temporal frequencies of drift and flicker are less protected from distortion, and show greater perceptual sharpening. 相似文献
On the Kirton Adaption-Innovation Inventory 1,106 Canadians scored as more adaptive than American and British standardization samples. Means for Canadian females and males were congruent with those in national samples from six other countries. 相似文献
Average faces are attractive. We sought to distinguish whether this preference is an adaptation for finding high-quality mates (thedirect selectionaccount) or whether it reflects more general informationprocessing mechanisms. In three experiments, we examined the attractiveness of birds, fish, and automobiles whose averageness had been manipulated using digital image manipulation techniques common in research on facial attractiveness. Both manipulated averageness and rated averageness were strongly associated with attractiveness in all three stimulus categories. In addition, for birds and fish, but not for automobiles, the correlation between subjective averageness and attractiveness remained significant when the effect of subjective familiarity was partialled out. The results suggest that at least two mechanisms contribute to the attractiveness of average exemplars. One is a general preference for familiar stimuli, which contributes to the appeal of averageness in all three categories. The other is a preference for averageness per se, which was found for birds and fish, but not for automobiles, and may reflect a preference for features signaling genetic quality in living organisms, including conspecifics. 相似文献
Contrary to the encoding-switch hypothesis, recent research demonstrates that 6-year-olds do not rely solely on parts-based encoding to recognize upright faces. This research shows better recognition of face parts presented in the whole face than in isolation, indicating use of holistic encoding. The present study examined whether children younger than 6 years also recognize faces holistically. Four-year-olds, 5-year-olds, and adults were administered a part-whole face recognition task. Children below the age of 6 remembered parts from upright faces better when tested in the whole-face context than in isolation. This whole-face advantage did not occur when faces were inverted. Although children showed a smaller inversion decrement than adults and generally performed more poorly than adults, the different age groups showed similar patterns of performance, indicating that young preschoolers, like older children and adults, are able to recognize faces holistically. 相似文献
It has been suggested that there are systematic distortions in children's memory for temporal durations, such that children's memory is not just less accurate than that of adults but qualitatively different. Experiment 1 replicated the memory distortion effect by demonstrating developmental change in the tendency to confuse a reference duration with one that is shorter rather than longer than it. When the long-term memory demands of the task were reduced by providing reminders of the reference duration on every trial, there were no such qualitative changes in error patterns (Experiment 2). Further evidence for developmental changes in memory distortion was found in the temporal generalization task of Experiment 3, in which stimuli were spaced logarithmically rather than linearly. In Experiment 4, a similar distortion pattern was absent in a task in which children made judgments about the pitch rather than the duration of stimuli, suggesting the effect may be specific to time estimation. 相似文献
Although men and women help others, there are systematic gender differences in the type of helping they perform. Consistent with traditional gender roles and stereotypes, men typically help in agentic ways, and women typically help in communal ways. Drawing on the Theory of Planned Behavior, the Gender Roles Inhibiting Prosociality model predicts that gender stereotypes about gender-inconsistent helping create negative attitudes, restrictive subjective norms, and low self-efficacy that undermine helping intentions, which, in turn, reduce engagement in gender-inconsistent helping contexts. Across three studies (N?=?1,355), we find empirical support for the hypothesized model: When asked to imagine engaging in a gender-inconsistent (vs. gender-consistent) helping scenario, participants anticipated feeling worse, expected others to judge them more negatively, and reported decreased self-efficacy beliefs, and these factors predicted lower intentions to engage in gender-inconsistent helping. Critically, behavioral intentions explained some of the variance in gender-inconsistent helping during the following month. Internal meta-analyses of the differences between gender-consistent and -inconsistent helping on attitudes, subjective norms, self-efficacy, and behavioral intentions across studies revealed small-to-medium average effect sizes (ds?=?0.16—0.47). These results have the potential to inform interventions aimed at increasing helping in all its forms.
Change blindness is the striking inability to detect seemingly obvious changes that occur between views of a scene. The current study assessed perceptual load as a factor that may affect change blindness for human faces. The study had participants (n = 103) interact with a researcher in a testing room that imposed low or high perceptual load. Midway through the conversation, the researcher was replaced by another person. Thirty‐nine percent of participants failed to detect the change. There was a significant effect of perceptual load, with greater change detection under low load (71%) than high load (52%). This research suggests that the perceptual load imposed by a task may have a significant effect on the likelihood of change blindness and ought to be considered in future research. 相似文献