A comparison of units for visually measuring facial actions

Visual inspection and categorization of facial appearances constitute the most frequent and useful technique for measuring facial activity. The techniques developed, however, have different units with varying characteristics. In this paper, I discuss categorical and scalar units for facial measurement and show the relationship of categorical units listed by different researchers.     

Feedback for improving staff training and performance in behavioral treatment programs

This paper reviewed observational studies that examined feedback for changing staff performance in behavioral treatment programs for clients with cognitive, developmental, or psychiatric disorders. The research findings were integrated into the main stages of staff training and management: pretraining, training, and posttraining. Specific recommendations for using feedback are made including defining process and outcome form and content before training, providing on‐the‐job supervisory feedback while staff practice self‐generated outcome feedback until competency is demonstrated, and after training, maintaining self‐generated feedback with emphasis on evaluating staff and client interactions with social validity measures. Copyright © 2008 John Wiley & Sons, Ltd.     

Processing the facial image: a brief history

The study of the neural basis of face perception is a major research interest today. This review traces its roots in monkey neuropsychology and neurophysiology beginning with the Klüver-Bucy syndrome and its fractionation and then continuing with lesion and single neuron recording studies of inferior temporal cortex. The context and consequence of the discovery of inferior temporal neurons selective for faces is described and current lines of research on inferior temporal cortex and face processing in both monkeys and humans are outlined.     

Facial comparison behaviour of forensic facial examiners

Facial examiners make visual comparisons of face images to establish the identities of persons in police investigations. This study utilised eye-tracking and an individual differences approach to investigate whether these experts exhibit specialist viewing behaviours during identification, by comparing facial examiners with forensic fingerprint analysts and untrained novices across three tasks. These comprised of face matching under unlimited (Experiment 1) and time-restricted viewing (Experiment 2), and with a feature-comparison protocol derived from examiner casework procedures (Experiment 3). Facial examiners exhibited individual differences in facial comparison accuracy and did not consistently outperform fingerprint analysts and novices. Their behaviour was also marked by similarities to the comparison groups in terms of how faces were viewed, as evidenced from eye movements, and how faces were perceived, based on the made feature judgements and identification decisions. These findings further understanding of how facial comparisons are performed and clarify the nature of examiner expertise.     

Psychological management and body image issues in facial transplantation

Facial transplantation, although controversial, is proposed as a major advance in facial reconstructive surgery, with the first partial transplant having taken place in France in November 2005. Although the psychological impact of facial transplantation will not be understood until several procedures have been carried out, this article examines the psychological issues likely to arise with particular reference to body image. A detailed framework for anticipation and management of psychological change is proposed. Pre-operative preparation must include thorough psychological preparation for the patient and their family. The immediate post-operative period is likely to be challenging, and a detailed management plan is proposed emphasising early return to function; subsequent psychological issues including altered body image, anxiety, shame, depression, communication and behavioural avoidance are discussed and a management strategy based on cognitive behavioural principles is proposed for the first post-operative year. Previous discussion frames psychological outcome in terms of complication and risk, tending to downplay the potential advantages of a successful procedure; the focus of this paper is on ensuring psychological adjustment as an inevitable consequence of change.     

躯体表情与面部表情加工进程比较

躯体和面孔是个体情绪识别的敏感线索。与面部表情的早期视觉加工相似, P1成分对恐惧、愤怒等负性躯体表情更加敏感, 反映了对躯体威胁信息快速且无意识的加工。情绪躯体和面孔还有着类似的构型加工, 表现为二者都能诱发颞枕区视觉皮层相似的N170成分, 但涉及的神经基础并不完全相同。在构型编码加工中, 面部表情的N170与顶中正成分(Vertex Positive Potential, VPP)较躯体表情的N170、VPP更加明显。在面部表情和躯体表情的后期加工阶段, 早期后部负波(Early Posterior Negativity, EPN)反映了面孔和躯体视觉编码的注意指向加工, 随后出现的P3与晚期正成分(Late Positive Component, LPC)代表了顶额皮层对复杂情绪信息的高级认知加工。躯体表情还存在与外纹状皮层躯体区相关的N190成分, 其对躯体的情绪和动作信息敏感。今后的研究应进一步探讨动作对情绪知觉的影响、动态面孔−躯体情绪的加工机制等。     

Feedback specificity,information processing,and transfer of training

This study examines the effects of feedback specificity on transfer of training and the mechanisms through which feedback can enhance or inhibit transfer. We used concurrent verbal protocol methodology to elicit and operationalize the explicit information processing activities used by 48 trainees performing the Furniture Factory computer simulation. We hypothesized and found support for a moderated mediation model. Increasing feedback specificity influenced the exposure trainees had to different task conditions and negatively affected their levels of explicit information processing. In turn, explicit information processes and levels of exposure to different task conditions interacted to impact transfer of training. Those who received less specific feedback relied more heavily on explicit information processing and had more exposure to the challenging aspects of the task than those who received more specific feedback, which differentially affected what they learned about the task. We discuss how feedback specificity and exposure to different task conditions may prime different learning processes.     

A comparison of intraverbal training procedures for children with autism

We compared the effectiveness of three training procedures, echoic and tact prompting plus error correction and a cues-pause-point (CPP) procedure, for increasing intraverbals in 2 children with autism. We also measured echoic behavior that may have interfered with appropriate question answering. Results indicated that echoic prompting with error correction was most effective and the CPP procedure was least effective for increasing intraverbals and decreasing echoic behavior.     

A comparison of social-skills training, pharmacotherapy and psychotherapy for depression

This study compared four treatments for unipolar (non-psychotic) depression: Amitriptyline, Social-Skills Training (SST) + Amitriptyline, SST + Placebo and Psychotherapy + Placebo. In addition, 25 normal women were assessed on the behavioral measures in order to evaluate the ecological validity of the dependent measures and the changes produced by treatment. The four treatments, conducted by experienced clinicians, all produced statistically-significant and clinically-meaningful changes in symptomatology. However, there were several notable differences. The SST groups had greater improvement on measures of social skill, and were more similar to the normal women after treatment. In addition the SST + Placebo group had the lowest level of attrition and had the highest proportion of patients who were significantly improved. Significance of the results for future research on SST and role-play measures of social skill was discussed.     

A comparison of methods for assessing child compliance during behavioral parent training

The purpose of the present study was to compare four methods of computing child compliance to parental instructions. Four noncompliant boys, ages 2.5 to 7 years, participated with their mothers in behavioral parent training. In order to evaluate the training, observers recorded the boys' compliance responses in continuous 10-sec intervals. The boys' rates of compliant responding were then computed by considering behavior (A) only in the first interval following the instruction, (B) in the first three intervals following the instruction, (C) in all intervals while the instruction was ongoing, and (D) only in the final interval of the instructional trial. The findings indicated that the first three methods were correlated strongly with each other, although there were occasional differences in the levels of compliance indicated by these three methods. The implications of the findings and the merits of each of the four methods are discussed.     

A perceptually based comparison of image similarity metrics

The assessment of how well one image matches another forms a critical component both of models of human visual processing and of many image analysis systems. Two of the most commonly used norms for quantifying image similarity are L1 and L2, which are specific instances of the Minkowski metric. However, there is often not a principled reason for selecting one norm over the other. One way to address this problem is by examining whether one metric, better than the other, captures the perceptual notion of image similarity. This can be used to derive inferences regarding similarity criteria the human visual system uses, as well as to evaluate and design metrics for use in image-analysis applications. With this goal, we examined perceptual preferences for images retrieved on the basis of the L1 versus the L2 norm. These images were either small fragments without recognizable content, or larger patterns with recognizable content created by vector quantization. In both conditions the participants showed a small but consistent preference for images matched with the L1 metric. These results suggest that, in the domain of natural images of the kind we have used, the L1 metric may better capture human notions of image similarity.     

The Physical Appearance Ambiguous Feedback Scale (PAAFS): a measure for indexing body image related cognitive bias

Recent conceptualizations of body image disturbance have included an information processing model that includes a focus on an interpretive information processing bias. Study 1 involved the development and validation of a measure of appearance-based cognitive bias, the Physical Appearance Ambiguous Feedback Scale (PAAFS). In Studies 2 and 3, two samples of college females (n=313) were tested and the psychometric characteristics of the PAAFS were evaluated. Reliability was acceptable and convergence with measures of body image and eating disturbance was moderate. In Study 4, 313 college females completed the PAAFS in the laboratory based on an instructional content designed to induce processing bias. Preliminary evidence indicates that the PAAFS appears to be sensitive to instructional set manipulations and dispositional level of body dissatisfaction.