Subjects: Psychology >> Experimental Psychology submitted time 2023-11-15
Abstract： Emotions surface during interaction between individuals. Thus, an accurate recognition of facial expressions is essential in the realm of social interactions. In recent years, numerous studies have revealed that individuals not only depend on facial configuration information for identifying facial expressions but also place considerable emphasis on contextual information extracted from external cues beyond the face. People’s behavior frequently unfolds within intricate social group dynamics, wherein individuals often perceive and interpret the facial expressions of their fellow group members during interaction. However, the impact of group information on facial expression recognition, being an essential social contextual factor, remains somewhat unclear. Hence, three experiments were conducted to investigate the influence exerted by group information on the recognition of facial expressions.
The stimuli used in the study were happy, fearful, and neutral face images selected from the NimStim set, including 15 pictures (seven females) of each of the aforementioned emotions. Group information was manipulated following the presentation of a fixation cross through perceptual cues. Subsequently, during the facial expression recognition phase, participants were instructed to recognize the facial expressions exhibited by target individuals. In the first experiment, participants were instructed to rate the intensity of target facial expressions on a six-emotion scale, and the surrounding facial expressions were always congruent with the target facial expressions. A total of 29 college students (16 females, mean age 20.00 ± 1.80 years) were recruited to participate in this experiment. In Experiments 2 and 3, we manipulated the emotional congruency between the surrounding faces and the target faces during the facial expression recognition phase. Additionally, we controlled for variations in physical characteristics across different experimental conditions. The task requirement of Experiment 2 was the same as those of Experiment 1. However, in Experiment 3, participants were instructed to judge the target facial expressions by pressing corresponding keys on the keyboard as quickly and accurately as possible. A total of 26 college students (14 females, mean age 21.15 ± 1.99 years) participated in Experiment 2, and 32 college students (15 females, mean age 21.20 ± 1.60 years) participated in Experiment 3.
Results revealed the following: (1) Compared with emotion-incongruent conditions, emotional congruency between target faces and surrounding faces resulted in shorter RTs and higher accuracy. (2) Group information regulated the influence of surrounding facial expressions on target facial expression recognition. Specifically, under group conditions, participants tended to recognize target facial expressions according to the emotional state of the surrounding faces. When the target facial expressions in line with the expectations established by the participants that group members have congruent emotional state, the recognition of target facial expressions was faster and more accurate than incongruent conditions. However, under nongroup conditions, participants recognized target facial expressions without reference to the emotional states of the surrounding faces. (3) Participants exhibited a faster and more accurate recognition of happy faces, indicating the recognition advantage effect for happy facial expressions.
Results revealed that group information influenced facial expression recognition, individuals recognized facial expressions based on the social relationship between the interactions, and understanding social interaction plays an important role in the process of emotion perception.
Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》
Abstract： Even though people usually agreed that “a book should not be judged by its cover”, researches had repeatedly demonstrated that individuals spontaneously and very swiftly formed impression on others based merely on the appearance of their faces. Facial attractiveness is an important content in the first perception. Which had been linked to outcomes as diverse as mate choice, job hunting, and cooperation. Given these real world consequences of the first impressions, it is important to understand how these impressions are formed. Some studies found that facial physical characteristics, such as symmetry, averageness and sexual dimorphism, had a great impact on facial attractiveness. While different individuals have different experience, when faced with the same face in the same context, different individuals have different evaluations on facial attractiveness. Some researchers put forward a new theory, namely, the observer hypothesis, which demonstrated that beauty is in the eye of the beholder. However, the processing of unfamiliar facial attractiveness remained unclear. The goal of the current study was to explore how we processed the impression of unfamiliar facial attractiveness. 19 males and 27 females took part in the experiment one and 16 males and 22 females participated in the experiment two, each experiment contained two phases that were learning tasks and evaluation tasks. In the learning phase, participants firstly learned to associate faces with negative, neutral, or positive trait words or imaged the behavior of the individuals to form different impression, which was contribute to the same valence between the neutral face and trait words or sentence. When participants could evaluate the valence of the face correctly, they could proceed to the next phase. In the experiment one, 13 males and 25 females had passed learning phase and evaluated the original faces and the unfamiliar faces. In the experiment two, 12 males and 17 females had done the learning task and evaluation task successfully. And in the evaluation phase, extend of warmth, competence and facial attractiveness of the unfamiliar faces, which had 50% similarity with the learned faces, were evaluated. Both of the two experiments had the same results, which showed that there are two ways to form unfamiliar facial attractiveness: (1) the first one is that generalization effect occurred after halo effect, compared with negative familiar faces, positive familiar faces were evaluated more attractive, so did the unfamiliar faces that were familiar with positive familiar faces; (2) the second one is that halo effect occurred after generalization effect, unfamiliar faces which were similar with positive familiar faces were not only evaluated more positive but also more attractive. The results suggested that generalization effect occurred after halo effect and halo effect occurred after generalization effect were the two ways to form unfamiliar facial attractiveness. In conclusion, halo effect and generalization effect play an important role in the processing of unfamiliar facial attractiveness.
Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》
Abstract： Facial expressions are fundamental emotional stimuli. They convey important information in social interaction. Most previous studies focused on the processing of isolated facial expressions. However, in everyday life, faces always appear within complex scenes. The emotional meaning of the scenes plays an important role in judging facial expressions. Additionally, facial expressions change constantly from appearance to disappearance. Visual scenes may have different effects on the processing of faces with different emotional intensities. Individual personality traits, such as trait anxiety, also affect the processing of facial expressions. For example, individuals with high trait anxiety have processing bias on negative emotional faces. The present study explored whether previously presented visual scenes affected the identification of emotions in morphed facial expressions, and whether the influences of visual scenes on the identification of facial expressions showed differences between individuals with high and low trait anxiety. Using the Spielberger State-Trait Anxiety Inventory (STAI), we placed 29 participants who scored in the top 27% in the high trait anxiety group (9 men and 20 women; mean age 19.76 � 1.3 years) and 28 participants who scored in the bottom 27% in the low trait anxiety group (11 males and 17 females, mean age 19.71 � 1.2 years). The images of faces (4 models, half male and half female) used in this study were selected from the NimStim Set of Facial Expressions. The face stimuli showed typical happy, neutral, and fearful expressions. Facial expressions were morphed to create a series of gradually varied images of facial expressions. Specifically, fearful face (100%) versus neutral face (0%) and happy face (100%) versus neutral face (0%) were morphed in 20% increments. In addition, 40 surrounding scene images were used, with 20 positive scenes and 20 negative scenes. In the face-emotion detection task, participants were asked to determine whether the emotion from the faces presented after the scenes were fearful, happy, or neutral. For the repeated measure ANOVA of the accuracy for facial expression detection, the results showed scene effects on the identification of emotions in facial expressions. The scene effects were varied between the different intensity of face emotion: for the emotionally vague faces, the detection of happy and fearful expression showed significant scene effects; for the faces with moderate emotional intensity, only the detection of the fearful faces showed significant scene effects; for the intense emotions on faces, there was a significant effect on happy and neutral faces but not on fearful faces. Trait anxiety as an individual factor was found to play a moderating role in the identification of facial expressions. For the high trait anxiety group, there were no significant differences in the accuracy of emotional detection between congruent and incongruent conditions. This means that the high trait anxiety group did not show significant scene effects. The low trait anxiety group showed a significant difference in the accuracy of identification of emotions in facial expressions between congruent and incongruent conditions, i.e., significant scene effects.In summary, the present study demonstrated that, for facial expressions with low emotional intensity, the identification of happy and fearful faces was more likely to be affected by visual scenes than the identification of neutral faces. Visual scenes were more likely to affect the identification of moderately fearful faces than moderately happy faces. Trait anxiety played a moderating role in the influence of visual scenes on emotional detection of facial expressions. Specifically, individuals with high trait anxiety were less affected by surrounding visual scenes and paid more attention to facial expressions.
Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》
Abstract： Stereotypes are vital for social interaction by facilitating social decision making as well as conserving limited time and cognitive resources. Previous studies on stereotype activation mainly focus specific social groups, such as gender, race, etc. However, exactly how stereotypes are activated among various social groups remains unknown. To fill this gap, we classified social groups into four clusters according to stereotype content model in the present study, measuring for perceptions of warmth and competence. These clusters form a four-way axis, that is, high warmth-high competence (HW-HC), high warmth-low competence (HW-LC), low warmth-high competence (LW-HC) and low warmth-low competence (LW-LC). Two experiments were conducted to investigate the behavioral patterns of stereotype activation among these four clusters. We predicted that the stereotype activation pattern would be similar among these four clusters. In the first experiment, we employed a sequential priming paradigm to explore stereotype activation explicitly. The prime stimuli were 24 social groups equally attributed to these four clusters and the target stimuli were stereotype trait words of these 24 social groups. All of the prime stimuli and target stimuli were obtained from pilot study. The participants were instructed to judge whether the target word was consistent with the stereotypes of the prime social group. Fifty undergraduates (35 female, 19~25 years old, M = 20.68, SD = 2.08) were recruited for this experiment.In the second experiment, to validate the findings of Experiment 1, we utilized a lexical decision task to further investigate the stereotype activation patterns among the four clusters implicitly, using the same stimuli from Experiment 1. Pseudowords were also added, corresponding to the target words of Experiment 1. Participants were asked to identify whether the target word as a real word or pseudoword. Forty eight undergraduates (32 female, 19~25 years old, M = 20.64, SD = 1.93) participated in Experiment 2. Four (Social groups: HW-HC, HW-LC, LW-HC, LW-LC) � 2 (Consistency: consistent vs. inconsistent) repeated measure ANOVA were examined for response time and accuracy in both experiments. The results of Experiment 1 revealed classical stereotype activation patterns for HW-HC, HW-LC, LW-HC social groups while showing a reverse pattern for LW-LC social groups. Specifically, the participants responded more quickly and more accurately on consistent condition than on inconsistent condition for the former three clusters. However, when the prime stimuli were LW-LC social groups, the reverse was true; faster and more accurate response was shown for inconsistent condition rather than consistent condition. In Experiment 2, only real word trails were analyzed. The results of Experiment 2 replicated the findings of Experiment 1. Therefore, classical stereotype activation patterns for HW-HC, HW-LC, LW-HC social groups and the reverse pattern of stereotype activation for LW-LC were relatively robust, both explicitly and implicitly, demonstrating the great differences among the stereotype activation patterns among these four clusters. The results of these two experiments partially support our hypothesis, while revealing an unforeseen reverse pattern of stereotype activation for LW-LC social groups. We hypothesize that this may be due to disgust elicited by LW-LC social groups. The present study expanded the research framework of stereotype activation and provided new behavioral evidence for the specificity of LW-LC. The mechanism underlying the reverse pattern of stereotype activation for LW-LC should be examined in the future.
Subjects: Psychology >> Cognitive Psychology submitted time 2021-09-07
Abstract： Facial expressions are an important medium for understanding the emotional feelings of others. However, individual factors such as gender, age, and personality traits can influence the perception of facial expressions. For instance, individuals with elevated level of trait anxiety, which is measure of frequency and intensity of occurrence of anxiety related symptoms, show attentional bias towards emotional stimuli, that is, higher attention to emotional information such as facial expressions. These studies mostly focused on attentional processing stage, and it remains unclear whether trait anxiety affects the pre-attentive processing stage of facial expression perception. Pre-attentive processing is an automatic evaluation of whether attention is needed for the stimulus, thereby filtering out irrelevant information to conserve cognitive resources and improve the efficiency of information processing. Therefore, the present study aimed to investigate the pre-attentive processing of facial expressions and the bias to emotional stimuli of trait anxious individuals to emotional stimuli during the pre-attentive processing stage. According to the scores of Spielberger State-Trait Anxiety inventory (STAI), 20 participants who scored in the top 27% were assigned to the high trait anxiety group (13 women; mean age=19.02 ± 0.63 years) and 20 participants who scored in the bottom 27% were assigned to the low trait anxiety group (11 women; mean age=19.63 ± 0.88 years). The stimuli used in the experiment were happy, sad and neutral face pictures selected from the Chinese Facial Affective Picture System (CAFPS; Gong et al., 2011) including 10 pictures (5 females and 5 males) of each kind of emotion. The deviant-standard-reverse oddball paradigm included 4 types of facial expression sequences: neutral standard stimuli/happy deviant stimuli, happy standard stimuli/neutral deviant stimuli; neutral standard stimuli/sad deviant stimuli, and sad standard stimuli/neutral deviant stimuli. The standard stimuli mean that this type of stimuli were appeared about 80% of the time in the sequence, and the deviant stimuli were about 20%. Participants were instructed to detect unpredictable changes in the size of fixation cross in the center of visual field and press a corresponding button as fast and as accurate as possible, and ignored facial expressions. The results revealed that, the amplitudes of N170 elicited by deviant faces were significantly larger than standard faces. Importantly, in the early EMMN, the mean amplitude elicited by sad facial expressions was significantly larger than happy facial expressions in low trait anxiety group, but there was no significant difference between happy and sad facial expressions in high trait anxiety group. Moreover, the early EMMN amplitude of happy faces was significantly larger in the high trait anxiety group than in the low trait anxiety group. These results suggest that the high trait anxiety group has similar amplification of EMMN amplitude for both happy and sad expressions. Our results show that there is a difference between high and low trait anxiety in the pre-attentive processing of facial expression. This suggests that personality traits are important factors influencing the pre-attentive processing of facial expressions, and high trait anxiety individuals may have difficulty in effectively distinguishing between happy and sad emotional faces during the pre-attentive processing stage and have similar processing patterns for them.
Subjects: Psychology >> Social Psychology submitted time 2019-06-20
Abstract： Stereotypes are vital for social interaction by facilitating social decision making as well as conserving limited time and cognitive resources. Previous studies on stereotype activation mainly focus specific social groups, such as gender, race, etc. However, exactly how stereotypes are activated among various social groups remains unknown. To fill this gap, we classified social groups into four clusters according to stereotype content model in the present study, measuring for perceptions of warmth and competence. These clusters form a four-way axis, that is, high warmth-high competence (HW-HC), high warmth-low competence (HW-LC), low warmth-high competence (LW-HC) and low warmth-low competence (LW-LC). Two experiments were conducted to investigate the behavioral patterns of stereotype activation among these four clusters. We predicted that the stereotype activation pattern would be similar among these four clusters. In the first experiment, we employed a sequential priming paradigm to explore stereotype activation explicitly. The prime stimuli were 24 social groups equally attributed to these four clusters and the target stimuli were stereotype trait words of these 24 social groups. All of the prime stimuli and target stimuli were obtained from pilot study. The participants were instructed to judge whether the target word was consistent with the stereotypes of the prime social group. Fifty undergraduates (35 female, 19-25 years old, M = 20.68, SD = 2.08) were recruited for this experiment. In the second experiment, to validate the findings of Experiment 1, we utilized a lexical decision task to further investigate the stereotype activation patterns among the four clusters implicitly, using the same stimuli from Experiment 1. Pseudowords were also added, corresponding to the target words of Experiment 1. Participants were asked to identify whether the target word as a real word or pseudoword. Forty eight undergraduates (32 female, 19-25 years old, M = 20.64, SD = 1.93) participated in Experiment 2. Four (Social groups: HW-HC, HW-LC, LW-HC, LW-LC) × 2 (Consistency: consistent vs. inconsistent) repeated measure ANOVA were examined for response time and accuracy in both experiments. The results of Experiment 1 revealed classical stereotype activation patterns for HW-HC, HW-LC, LW-HC social groups while showing a reverse pattern for LW-LC social groups. Specifically, the participants responded more quickly and more accurately on consistent condition than on inconsistent condition for the former three clusters. However, when the prime stimuli were LW-LC social groups, the reverse was true; faster and more accurate response was shown for inconsistent condition rather than consistent condition. In Experiment 2, only real word trails were analyzed. The results of Experiment 2 replicated the findings of Experiment 1. Therefore, classical stereotype activation patterns for HW-HC, HW-LC, LW-HC social groups and the reverse pattern of stereotype activation for LW-LC were relatively robust, both explicitly and implicitly, demonstrating the great differences among the stereotype activation patterns among these four clusters. The results of these two experiments partially support our hypothesis, while revealing an unforeseen reverse pattern of stereotype activation for LW-LC social groups. We hypothesize that this may be due to disgust elicited by LW-LC social groups. The present study expanded the research framework of stereotype activation and provided new behavioral evidence for the specificity of LW-LC. The mechanism underlying the reverse pattern of stereotype activation for LW-LC should be examined in the future.
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2018-12-04 Cooperative journals: 《协和医学杂志》
Abstract：目的探讨加速康复外科(enhanced recovery after surgery, ERAS)模式在胰十二指肠切除术围术期管理中应用的安全性及有效性。方法2016年4月至2018年4月在北京协和医院基本外科接受胰十二指肠切除术的患者，其中符合人选和排除标准的63例患者纳人ERAS组，同期行常规胰十二指肠切除术的60例患者设为对照组，观察并比较两组患者术中、术后相关指标、并发症发生情况及临床结局。结果ERAS组和对照组基线资料均衡可比，无统计学差异。ERAS组以腹腔镜手术为主，而对照组开腹手术居多(P<0.01); ERAS组的手术时间较对照组延长(P<0. O1)，但术中出血量显著降低(P<0. O1)，术后胃管拔除时间(P= 0. 012)和恢复流食时间(P=0. 015)早于对照组，住院时间明显短于对照组(P= 0. 024)，住院费用亦低于对照组(P=0. 018) o ERAS组的胃排空障碍发生率(3. 2%)明显少于对照组(13.3%}( P= 0. 039)，总并发症发生率、胰痔、胆痔、术后出血、感染、二次人院、二次手术发生率及死亡率等指标两组间无统计学差异。ERAS组中腹腔镜手术组的术中出血量(P< 0. 01)、术后住院天数(P = 0. 016)、住院费用(P = 0. 021)显著低于开腹手术组。结论ERAS理念下行胰十二指肠切除术安全有效，加速患者康复，且不增加并发症的发生风险。
Subjects: Psychology >> Cognitive Psychology submitted time 2018-09-07 Cooperative journals: 《心理学报》
Abstract： 基于自我加工优势和内隐积极联想理论, 采用视觉搜索范式结合ERPs技术考察个体自我表情加工的特点, 并进一步探讨情绪效价和身份信息对面孔加工的直接影响。结果发现：(1)搜索自我快乐表情比自我愤怒表情及两类他人表情速度更快、正确率也更高; (2)自我快乐表情对N1、N2、LPP成分的激活显著大于自我愤怒表情及两类他人表情。自我表情加工存在积极加工偏向, 且这种加工优势在面孔加工早期视觉编码阶段就已出现。
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