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911.
The present study investigated the role of skin tone, hair colour and hair length in perceptions of women's physical attractiveness, health and fertility. One-hundred and thirty men and 112 women rated a series of 12 line drawings that varied in three levels of skin tone, two levels of hair colour and two levels of hair length. Results showed a number of interactions between the three variables, suggesting that these phenotypes are highly intercorrelated. However, there were also significant main effects of each of the variables, with hair colour generally explaining the greatest amount of variance. In general, light-toned figures were rated the most positively. Contrary to expectations, however, brunettes were rated more positively than blondes, and hair length had only a weak effect on ratings of attractiveness. Implications of these findings and the limitations of the use of line drawings are discussed in conclusion. 相似文献
912.
Six pigeons were trained in a delayed matching-to-sample task involving bright- and dim-yellow samples on a central key, a five-peck response requirement to either sample, a constant 1.5-s delay, and the presentation of comparison stimuli composed of red on the left key and green on the right key or vice versa. Green-key responses were occasionally reinforced following the dimmer-yellow sample, and red-key responses were occasionally reinforced following the brighter-yellow sample. Reinforcer delivery was controlled such that the distribution of reinforcers across both comparison-stimulus color and comparison-stimulus location could be varied systematically and independently across conditions. Matching accuracy was high throughout. The ratio of left to right side-key responses increased as the ratio of left to right reinforcers increased, the ratio of red to green responses increased as the ratio of red to green reinforcers increased, and there was no interaction between these variables. However, side-key biases were more sensitive to the distribution of reinforcers across key location than were comparison-color biases to the distribution of reinforcers across key color. An extension of Davison and Tustin's (1978) model of DMTS performance fit the data well, but the results were also consistent with an alternative theory of conditional discrimination performance (Jones, 2003) that calls for a conceptually distinct quantitative model. 相似文献
913.
Small DM Simons AD Yovanoff P Silva SG Lewis CC Murakami JL March J 《Journal of abnormal child psychology》2008,36(7):1015-1028
Patterns and correlates of comorbidity, as well as differences in manifest depressive profiles were investigated in a sample
of depressed adolescents. A sub-sample of the youth were characterized as belonging to either a Pure depression group, an Internalizing group (depression and co-occurring internalizing disorders), or an Externalizing group (depression and co-occurring externalizing disorders). Item response theory (IRT) and differential item functioning
(DIF) were used to assess whether the depressed adolescents from the different comorbidity groups presented with different
depressive symptoms. Results indicated that the comorbidity groups were meaningfully distinct in terms of psychosocial correlates
as well as showed differences in depressive symptom profiles as informed by DIF analyses. In particular, the comorbidity groups
differed in terms of presentation of psychomotor changes and cognitive impairments. Implications for assessment are discussed.
相似文献
David Marc SmallEmail: |
914.
Previous research has indicated a potential discontinuity between monkey and human ventral premotor-parietal mirror systems, namely that monkey mirror systems process only transitive (object-directed) actions, whereas human mirror systems may also process intransitive (non-object-directed) actions. The present study investigated this discontinuity by seeking evidence of automatic imitation of intransitive actions--hand opening and closing--in humans using a simple reaction time (RT), stimulus-response compatibility paradigm. Left-right and up-down spatial compatibility were controlled by ensuring that stimuli were presented and responses executed in orthogonal planes, and automatic imitation was isolated from simple and complex orthogonal spatial compatibility by varying the anatomical identity of the stimulus hand and response hemispace, respectively. In all conditions, action compatible responding was faster than action incompatible responding, and no effects of spatial compatibility were observed. This experiment therefore provides evidence of automatic imitation of intransitive actions, and support for the hypothesis that human and monkey mirror systems differ with respect to the processing of intransitive actions. 相似文献
915.
916.
已有研究发现在视觉搜索任务中对直视的探测比斜视更快且更准确, 该现象被命名为“人群中的凝视效应”。大多数研究者将该效应的产生归因于直视会捕获更多的注意。然而, 直视条件下对搜索项的匹配加工更容易也有可能导致对直视的探测比斜视快。此外,已有研究还发现头的朝向会影响对注视方向的探测, 但对于其产生原因缺乏实验验证。本研究采用视觉搜索范式, 运用眼动技术, 把注视探测的视觉搜索过程分为准备阶段、搜索阶段和反应阶段, 对这两个问题进行了探讨。结果显示:对直视的探测优势主要表现在搜索阶段和反应阶段; 在搜索阶段直视的探测优势获益于搜索路径的变短和分心项数量的变少以及分心项平均注视时间的变短; 头的朝向仅在搜索阶段对注视探测产生影响。该结果表明, 在直视探测中对搜索项的匹配加工比在斜视探测中更容易也是导致“人群中的凝视效应”的原因之一; 头的朝向仅仅影响了对注视方向的搜索并没有影响对其的确认加工。 相似文献
917.
918.
选取88名大班儿童(43名女童和45名男童)及90名在校大学生(42名男生和48名女生)为实验被试,通过心理量表评分,探讨面部特征空间关系、肤色和亮度对儿童卡通面孔吸引力影响。结果显示:(1)幼儿与成人对卡通面孔最佳面部特征空间关系评价存在差异;(2)幼儿评价女童卡通面孔眼嘴间距离占面长24%时吸引力最优,两眼间距离占面宽41%时吸引力最优,但未达显著。成人评价女童卡通面孔也存在纵向“黄金比例(19%)”现象;(3)男童卡通面孔不存在最佳比例;(4)幼儿偏爱偏白肤色,而成人偏好白里透红;(5)受众性别与卡通形象性别均对肤色偏好有影响;(6)亮度高的儿童卡通面孔更具吸引力。结论:卡通面孔吸引力受面部特征空间关系、肤色与亮度等因素显著影响,卡通设计需针对不同年龄、性别受众来设定面部特征空间关系与肤色等要素。 相似文献
919.
不同美感体验类型有何特异的生理反应?美感的生理反应是否类似于积极情绪?本研究以音乐和图片两类材料为刺激,以心率、皮肤电为生理反应指标,测量了不同审美状态下的自主生理反应情况。结果发现:不论是听觉还是视觉通道,优美、壮美、悲剧、喜剧4种审美风格的刺激都使被试心率和皮肤电下降;不同的美感形态所引起的反应不同,喜剧和壮美风格刺激诱发的自主生理反应变化相对于其他两种风格显得更明显,喜剧风格效果尤为突出;不同美感体验类型特异生理反应具有跨通道的一致性;四种美感体验类型的生理反应都不同于消极情绪,而类似积极情绪,从生理反应视角证明了美感体验递属于积极情绪。 相似文献
920.
医学公共卫生领域非传统安全威胁历来是而且当今仍然是威胁人类自身生存的重大社会安全问题.重大传染病的暴发、自杀、现代医学高科技等现象动辄呈现出全球化趋势,尤其是SARS的爆发,突出了公共卫生的重要性,给我国公共卫生的管理及政策制定提出了更高要求:应真正建立起以"预防为主"的公共卫生体系,加强中国与国际的安全合作,加强公民的医学和健康教育.这是由公共卫生本身的性质和时代的发展共同决定的. 相似文献