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121.
Humans and other animals are highly sensitive to deviations from bilateral symmetry and prefer symmetric mates. Fluctuating
asymmetries (FAs) are random deviations from perfect symmetry that can result from developmental instability. Human perceptions
of facial asymmetry are driven by FAs and insensitive to directional asymmetries (DAs), which have a consistent direction
of bias (e.g., left side always larger) across the population and are unrelated to developmental stability. We hypothesized
that perceptual adaptation may filter out DAs and provide a proximate mechanism for this perceptual focus on FAs. We created
a small population of faces with DAs by applying a unilateral distortion to the same side of each face. After 5 min of adaptation,
(new) faces with these DAs looked less asymmetric and the most symmetric-looking distortion shifted toward the adapting asymmetry
level. Parallel changes occurred for attractiveness. We suggest that perceptual adaptation may provide the proximate mechanism
for an evolutionarily adaptive focus on FAs. 相似文献
122.
To evaluate the extent to which the models of moral judgment advanced by Kohlberg (1984) and by Gilligan (1982, 1988) are
able to account for real-life moral judgment, we investigated the relation of sex and type of moral dilemma to moral stage
and moral orientation. Eighty young adult men and women made moral judgments about two hypothetical Kohlberg dilemmas, two
real-life antisocial dilemmas, and two real-life prosocial dilemmas. We failed to find any sex differences in moral judgment.
Moral stage and moral orientation varied across the three types of dilemma. Kohlberg's dilemmas pulled for justice-oriented
Stage 4 moral judgments, real-life prosocial dilemmas pulled for care-oriented Stage 3 moral judgments, and real-life antisocial
dilemmas pulled for justice-oriented Stage 2 moral judgments. The content of moral judgments was related to their structure.
There was a positive relation between stage of moral judgment on Kohlberg dilemmas and on real-life dilemmas. The implications
of these findings for a new, more interactional, model of real-life moral judgment are discussed. 相似文献
123.
Abstract—Several commentators have suggested that the attractiveness of average facial configurations could be due solely to associated changes in symmetry. If this symmetry hypothesis is correct, then averageness should not account for significant variance in attractiveness ratings when the effect of symmetry is partialed out. Furthermore, changes in attractiveness produced by manipulating the averageness of individual faces should disappear when all the images are made perfectly symmetric. The experiments reported support neither prediction. Symmetry and averageness (or distinctiveness, the converse of averageness) made independent contributions to attractiveness (Experiments 1 and 2), and changes in attractiveness resulting from changes in averageness remained when the images were made perfectly symmetric (Experiment 2). These results allow us to reject the symmetry hypothesis, and strengthen the evidence that facial averageness is attractive. 相似文献
124.
Memory for lateral asymmetries in well-known faces: Evidence for configural information in memory representations of Faces 总被引:1,自引:0,他引:1
Gillian Rhodes 《Memory & cognition》1986,14(3):209-219
Two Experiments Were Carried Out To Determine Whether Configural Information About The Left-Right Organization Of A Face Is Represented In Memory. In Experiment 1, Subjects Consistently Chose Normal (Correct) Photographs as Better Likenesses of Familiar Faces than Mirror-Reversed photographs. This Effect Was Stronger For More Familiar Faces, and Did Not Depend On the Presence of Asymmetric Hairstyles Or Single, Asymmetrically Located Features (E.G., Moles, Warts). In Experiment 2, Subjects Were Asked To Decide Which of the Left and Right Composite Faces Was a Better Likeness of the Person. The Left Composite Is Normally Considered a Better Likeness In Perceptual Matching Tasks Where The Normal Photograph Is Present. Left Composites Were Regarded As Better Likenesses than Right Composites, Despite the Fact That This Bias Appeared To Compete With One in Favor of the More Realistic of the two Composites. The Results of Experiments 1 And 2 Suggest That Configural Information About The Left-Right Organization Of Faces Is Represented In Memory. The Right Hemiface Of A Familiar Face Was Considered More Expressive Than The Left Hemiface. This Is Opposite To The Normal Result for Unfamiliar Faces. The Implications of the Results For Models Of Face Representations and for Future Research Directions Are Discussed. 相似文献
125.
The authors evaluate a model suggesting that the performance of highly neurotic individuals, relative to their stable counterparts, is more strongly influenced by factors relating to the allocation of attentional resources. First, an air traffic control simulation was used to examine the interaction between effort intensity and scores on the Anxiety subscale of Eysenck Personality Profiler Neuroticism in the prediction of task performance. Overall effort intensity enhanced performance for highly anxious individuals more so than for individuals with low anxiety. Second, a longitudinal field study was used to examine the interaction between office busyness and Eysenck Personality Inventory Neuroticism in the prediction of telesales performance. Changes in office busyness were associated with greater performance improvements for highly neurotic individuals compared with less neurotic individuals. These studies suggest that highly neurotic individuals outperform their stable counterparts in a busy work environment or if they are expending a high level of effort. 相似文献
126.
Executive functions and ADHD in adults: evidence for selective effects on ADHD symptom domains 总被引:4,自引:0,他引:4
Nigg JT Stavro G Ettenhofer M Hambrick DZ Miller T Henderson JM 《Journal of abnormal psychology》2005,114(4):706-717
Dual-process models of attention-deficit/hyperactivity disorder (ADHD) suggest that both executive functioning and regulatory functions (e.g., processing speed) are involved and that executive function weaknesses may be associated specifically with symptoms of inattention-disorganization but not hyperactivity-impulsivity. Adults aged 18-37 (105 with ADHD, 90 controls) completed a neuropsychological battery. The ADHD group had weaker performance than did the control group (p<.01) on both executive and speed measures. Symptoms of inattention-disorganization were uniquely related to executive functioning with hyperactivity-impulsivity controlled. Inattention was associated with slower response speed, and hyperactivity-impulsivity with faster output speed. Results were not accounted for by IQ, age, gender, education level, or comorbid disorders. Findings are discussed in terms of developmental and dual-process models of ADHD leading into adulthood. 相似文献
127.
Leslie JC Shaw D Gregg G McCormick N Reynolds DS Dawson GR 《Journal of the experimental analysis of behavior》2005,84(3):327-338
Learning and memory are central topics in behavioral neuroscience, and inbred mice strains are widely investigated. However, operant conditioning techniques are not as extensively used in this field as they should be, given the effectiveness of the methodology of the experimental analysis of behavior. In the present study, male C57B1/6 mice, widely used as background for transgenic studies, were trained to lever press on discrete-trial fixed-ratio 5 or fixed-interval (11 s or 31 s) schedules of food reinforcement and then exposed to 15 extinction sessions following vehicle or chlordiazepoxide injections (15 mg/kg i.p., administered either prior to all extinction sessions, or prior to the final 10 extinction sessions). Extinction of operant behavior was facilitated by drug administration following training on either schedule, but this facilitation only occurred once a number of extinction sessions had taken place. The extinction process proceeded more rapidly following fixed-interval training. Resistance to extinction was equally high following training with either schedule type, and was reduced by drug administration in both cases. These phenomena were evident in individual cumulative records and in analyses of group data. Results are interpreted in terms of phenomena of operant extinction identified in Skinner's (1938) Behavior of Organisms, and by behavioral momentum theory. These procedures could be used to extend the contribution of operant conditioning to contemporary behavioral neuroscience. 相似文献
128.
Gillian Cohen 《Quarterly journal of experimental psychology (2006)》1969,21(3):272-279
Subjects were asked to judge successively presented letter trigrams “same” or “different.” The different stimuli were divided into four groups; not confusable (NC), acoustically confusable (AC), visually confusable (VC), and both visually and acoustically confusable (VC & AC). Reaction times (RT) were lengthened only by the double confusability. It is argued that comparisons are normally made in both channels, so that confusability in a single channel has no effect since the alternative channel is unimpaired. RTs are only increased when both channels are slowed down. A further experiment confirms this interpretation. When the situation is manipulated so that only the visual channel is employed, the VC group shows the same increase as the VC & AC group. 相似文献
129.
Gillian Cohen 《Attention, perception & psychophysics》1970,8(5):370-372
Subjects read passages of prose, canceling targets that were visual (letters), acoustic (phonemes), or semantic (words of a specified category). Each of the targets occurred singly and in all possible double and triple combinations. Comparison of the search times reveals that semantic processing adds little or no extra time when combined with acoustic or with visual and acoustic searches, i.e., it occurs in parallel. Other combinations of processing yield search times that are slightly faster than a serial model would predict and are best interpreted as reflecting an overlapping sequence of operations. 相似文献
130.
This paper describes the analysis of predictive factors in a group of generally anxious patients treated with anxiety management. Evidence for three reliable predictors is presented. It is argued these reflect anxiety, demoralisation and depression. The same three variables contributed to prediction of outcome after treatment and 6 months later, and their pre-treatment values classified 80% of the patients correctly into good or poor responders. Lower initial levels of anxiety and demoralisation together with higher depression rated by the assessor predicted a better outcome. Predictions were more accurate for patients with a mild degree of depression than for those who were not depressed. 相似文献