Identification accuracy of a single culprit in a multiple-perpetrator mock crime

IntroductionEyewitness identification research has mainly examined the identification accuracy of a single perpetrator but many actual crimes involve not one but several perpetrators.ObjectiveThe aim of the study was to examine the identification accuracy if only one lineup for one of the two perpetrators is presented in a multiple perpetrator crime.MethodThe sample consisted of 180 participants who saw a theft video followed by distraction tasks. One group of participants saw lineups for both of the perpetrators (one target present and one target-absent) whereas the other saw only a single lineup (either target-present or target-absent) for one of the two perpetrators.ResultsParticipants who saw a single lineup did not make more inaccurate identification decisions then participants who saw two lineups. Decision accuracy in the first lineup was not associated with the decision accuracy in the second lineup.ConclusionThe results are discussed in terms of the number of perpetrators and line-up presentation types.     

Is motion extrapolation employed in multiple object tracking? Tracking as a low-level, non-predictive function

In a series of five experiments, we investigated whether visual tracking mechanisms utilize prediction when recovering multiple reappearing objects. When all objects abruptly disappeared and reappeared mid-trajectory, it was found that (a) subjects tracked better when objects reappeared at their loci of disappearance than when they reappeared in their extrapolated trajectories, (b) disappearance episodes ranging from 150 to 900 ms had virtually no differential effect on performance, (c) tracking deteriorated monotonically as a function of displacement magnitude during disappearance, and (d) tracking did not depend on whether objects moved in predictable paths. Even objects that reappeared backward in their trajectories were tracked dramatically better than objects that reappeared in their extrapolated trajectories. When all objects disappeared and reappeared in ways that implicated the presence of an occluder (i.e., with occlusion and disocclusion cues along fixed contours), tracking again was not predictive, and performance deteriorated with increased displacement. When objects reappeared predictably in 75% of trials, they were still tracked better when they reappeared at their points of disappearance. Theoretical implications of a non-predictive multiple object tracking mechanism are discussed.     

成就动机的多重目标理论

基于成就目标的三分法,Harackiewicz等人提出多重目标理论。该理论认为,学生在学习过程中采用多种类型的成就目标将会带来最佳的适应性结果,这种观点与单纯强调掌握目标正性作用的传统目标理论相对立。根据多重目标对成就结果的作用模式,理论学家分别提出了四种模型：累加目标模型、交互目标模型、特定目标模型以及选择目标模型。最近的实证研究支持了选择目标模型的观点,并为如何提升个体的成就水平提供了重要的理论依据。     

Promoting Generalization of Oral Reading Fluency: Providing Drill versus Practice Opportunities

Extensive evidence exists demonstrating the benefits of repeated readings (RR) interventions at increasing students’ fluency on intervention passages. Few studies however have examined the extent to which repeatedly reading one passage improves students’ reading fluency on similar passages. Using an alternating treatment design, we examined the extent to which two interventions resulted in improvements in students’ fluency on generalization passages. While both interventions incorporated RR, one intervention involved students reading one passage four times and the other involved students reading two similar passages each twice. Intervention effects were evaluated by having students read a generalization passage prior to and following intervention implementation. Results indicate that both interventions were effective in increasing students reading fluency on generalization passages. For 3 participants the RR intervention produced greater gains in fluency on the generalization passages, while data for the remaining 3 participants are inconclusive. Implications of these findings for practice and for better understanding application of the instructional hierarchy to the development of reading interventions are discussed.

Memory transfer for emotionally valenced words between identities in dissociative identity disorder

The present study aimed to determine interidentity retrieval of emotionally valenced words in dissociative identity disorder (DID). Twenty-two DID patients participated together with 25 normal controls and 25 controls instructed to simulate DID. Two wordlists A and B were constructed including neutral, positive and negative material. List A was shown to one identity, while list B was shown to another identity claiming total amnesia for the words learned by the first identity. The identity claiming amnesia was tested for intrusions from list A words into the recall of words from list B and recognition of the words learned by both identities. Test results indicated no evidence of total interidentity amnesia for emotionally valenced material in DID. It is argued that dissociative amnesia in DID may more adequately be described as a disturbance in meta-memory functioning instead of an actual retrieval inability.     

Rejection sensitivity as a mediator of the relationship between experienced rejection and borderline characteristics

Experiences of rejection in childhood play an important role in the etiology of borderline personality disorder (BPD). Additionally, individuals who report borderline symptoms report high levels of rejection sensitivity. The current study aimed to disentangle the relationship between experiences of rejection, rejection sensitivity and borderline characteristics. Therefore, we retrospectively assessed experiences of parental and peer rejection, collected data of self-reported rejection sensitivity and social support and prospectively investigated borderline characteristics in a sample of 193 students. Results indicated that rejection sensitivity fully mediated the previously significant relationship between experiences of parental rejection and borderline characteristics, whereas peer rejection maintained a significant effect on borderline traits. Social support was identified as a protective factor. Results indicated a crucial role of rejection sensitivity in borderline symptomatology.     

Perfectionism and exam performance: The mediating effect of task-approach goals

Perfectionistic strivings are positively correlated with students’ achievement goals and exam performance. However, so far no study has employed a prospective design investigating whether achievement goals mediate the positive relationship between perfectionistic strivings and exam performance. In the present study, 100 university students completed a measure of self-oriented perfectionism and socially prescribed perfectionism (Hewitt & Flett, 1991) and received a chapter from a textbook to study for 2–4 days. Then they returned to the lab to complete a measure of achievement goals following the 3 × 2 model (Elliot, Murayama, & Pekrun, 2011) and sit a mock exam testing their knowledge of the chapter. Multiple regressions showed that socially prescribed perfectionism negatively predicted exam performance when the overlap with self-oriented perfectionism was controlled for. In contrast, self-oriented perfectionism—a defining indicator of perfectionistic strivings—positively predicted exam performance. Moreover, task-approach goals mediated the positive relationship between self-oriented perfectionism and exam performance. The findings suggest that perfectionistic strivings make students adopt task-approach goals that help them achieve better results on exams.     

Establishing versus preserving impressions: Predicting success in the multiple audience problem

People sometimes seek to convey discrepant impressions of themselves to different audiences simultaneously. Research suggests people are generally successful in this “multiple audience problem.” Adding to previous research, the current research sought to examine factors that may limit this success by measuring social anxiety and placing participants into situations requiring them to either establish or preserve multiple impressions simultaneously. In general, participants were more successful when preserving previously conveyed impressions than when establishing impressions for the first time. In contrast, social anxiety did not affect multiple audience success. In all, this research offers valuable insight into potential challenges that people face in many social situations.     

Multiple Levels of Family Factors and Oppositional Defiant Disorder Symptoms Among Chinese Children

Family factors are closely associated with child developmental outcomes. This study examined the relationship of oppositional defiant disorder (ODD) symptoms and factors at whole family, dyadic, and individual levels in Chinese children. Participants, who were recruited from 14 primary schools in north, east, and south‐west China, included 80 father‐child dyads and 169 mother‐child dyads. Children in the participating dyads were previously diagnosed with ODD. Results revealed that family cohesion/adaptability was indirectly associated with ODD symptoms via parent–child relationship and child emotion regulation. Parent–child relationship affected ODD symptoms directly and indirectly through child emotion regulation. In addition, the effects of family cohesion/adaptability on parent emotion regulation and child emotion regulation were mediated by the parent–child relationship. The tested model provides a comprehensive framework of how family factors at multiple levels are related to child ODD symptoms and highlights the importance of understanding child emotional and behavioral problems within the family context, more specifically within the multiple levels of family relationships.     

Adaptive Tasks in Multiple Sclerosis: Development of an Instrument to Identify the Focus of Patients' Coping Efforts

Objective : Adaptive tasks, referring to the subjective evaluation of disease-related stressors in relation to personal concerns, have been neglected in the extensive literature on coping with chronic disease. In this study, the development of an instrument for measuring adaptive tasks is described: the Questionnaire Adaptive Tasks in Multiple Sclerosis (QuAT-MS). Method : The QuAT-MS is based on a bottom-up categorization of patients' statements on the losses, threats, and challenges brought about by their disease, and employs 10 scales to measure the importance attached to particular disease-related stressors. Validity and reliability of this bottom-up categorization were established in a sample of MS patients ( N = 259) by examining their associations with related concepts relevant in adaptation to disease, such as coping (CISS), coping resources (LOT, self-efficacy), and quality of life (SIP). We also investigated whether patients' backgrounds and disease characteristics were related to adaptive tasks. Results : Adaptive tasks are more closely related with concepts relevant for adaptation (coping and coping resources) than with physical functioning (SIP) and disease-related characteristics (illness duration). Adaptive tasks are also associated with gender and level of education. Conclusion : It is concluded that adaptive tasks can be distinguished from related concepts like coping and quality of life. Furthermore, the QuAT-MS offers a reliable and patient-centred instrument for measuring the tasks which MS patients identify in their adaptation process.