The Joint Multivariate Modeling of Multiple Mixed Response Sources: Relating Student Performances with Feedback Behavior

The present study concerns a Dutch computer-based assessment, which includes an assessment process about information literacy and a feedback process for students. The assessment is concerned with the measurement of skills in information literacy and the feedback process with item-based support to improve student learning. To analyze students’ feedback behavior (i.e. feedback use and attention time), test performance, and speed of working, a multivariate hierarchical latent variable model is proposed. The model can handle multivariate mixed responses from multiple sources related to different processes and comprehends multiple measurement components for responses and response times. A flexible within-subject latent variable structure is defined to explore multiple individual latent characteristics related to students’ test performance and feedback behavior. Main results of the computer-based assessment showed that feedback-information pages were less visited by well-performing students when they relate to easy items. Students’ attention paid to feedback was positively related to working speed but not to the propensity to use feedback.     

The effects of culture and self-construal on responses to threatening health information

Objective: The current studies examined if cultural and self-construal differences in self-enhancement extended to defensive responses to health threats.

Design: Responses to fictitious medical diagnoses were compared between Asian-Americans and European-North Americans in Experiment 1 and between Canadians primed with an interdependent versus an independent self-construal in Experiment 3. In Experiment 2, the responses of Chinese and Canadians who were either heavy or light soft drink consumers were assessed after reading an article linking soft drink consumption to insulin resistance.

Main outcome measure: The primary-dependent measure reflected participants’ defensiveness about threatening versus nonthreatening health information.

Results: In Experiment 1, all participants responded more defensively to an unfavourable than a favourable diagnosis; however, Asian-Americans responded less defensively than did European-North Americans. In Experiment 2, all high soft drink consumers were less convinced by the threatening information than were low soft drink consumers; however, among high consumers, Chinese changed their self-reported consumption levels less than did European-Canadians. In Experiment 3, interdependence-primed participants responded less defensively to an unfavourable diagnosis than did independence-primed participants.

Conclusion: Defensive reactions to threatening health information were found consistently; however, self-enhancement was more pronounced in individuals with Western cultural backgrounds or independent self-construals.     

Slow Motor Responses to Visual Stimuli of Low Salience in Autism

ABSTRACT

The authors studied 2 tasks that placed differing demands on detecting relevant visual information and generating appropriate gaze shifts in adults and children with and without autism. In Experiment 1, participants fixated a cross and needed to make large gaze shifts, but researchers provided explicit instructions about shifting. Children with autism were indistinguishable from comparison groups in this top-down task. In Experiment 2 (bottom-up), a fixation cross remained or was removed prior to the presentation of a peripheral target of low visual salience. In this gap–effect experiment, children with autism showed lengthened reaction times overall but no specific deficit in overlap trials. The results show evidence of a general deficit in manual responses to visual stimuli of low salience and no evidence of a deficit in top-down attention shifting. Older children with autism appeared able to generate appropriate motor responses, but stimulus-driven visual attention seemed impaired.     

First things first: infants make good use of the sympathetic rhythm of imitation,without reason or language

Research on communication with infants, including newborns, has demonstrated that imitations in great variety play many different parts, and with emotions of interest and pleasure. Matching another's actions may seek attention and provoke reply, accept or reject advances, express admiration or mockery. It seems best to regard imitating as one way that persons express and receive sympathetic awareness, one manifestation of the intuitive readiness to move rhythmically with others in games of sociability. Infants exhibit growing awareness of how to cooperate with others in gaining knowledge and skills. The intersubjective intuitions that are active early in life and that build trust and companionship must be significant for therapists who work with young patients for whom communication is difficult. Imitating and accepting imitations can build reciprocal confidence.     

致癌因素与机体相互作用的损伤与抗损伤反应

损伤与抗损伤是机体对病因作出的一种防御性反应.正确地认识其在疾病发生发展过程中的作用,不仅有助于现代医学阐明疾病的发生机制,而且有利于传统医学提高辩证施治的效果.本文旨在探讨癌症致病因素与机体相互作用的抗损伤反应中的辩证关系,可望逐步提高医者在临床实践中运用唯物辩证法和方法论的自觉性.     

Behavioural and Emotional Development in Children of Divorce

This study reports on teacher perceptions of the impact of parental divorce on behaviour and emotional development in children of divorce. Participants were a purposive sampling of 80 primary school learners with parental divorce experience and a comparison group of 40 others from typical or intact families (n = 120: males = 64; females = 56; age range = 6 to 12 years). Teachers completed the Conners' Rating Scales—Revised (CRS—R: Conners, 1998; Casat et al., 1999) on each of the learners. The findings suggest that teachers perceive younger children from divorced parents were more likely to have emotional and behavioural challenges than those from intact families. By contrast, teachers perceived older children from intact were to have emotional and behavioural difficulties.     

多频稳态诱发电位在伪聋鉴别诊断中的应用

探讨多频稳态诱发电位在伪聋鉴别诊断中的作用。门诊就诊的外伤后主诉单耳听力损伤者41例及正常听力者20例（40耳）,对两组患者分剐进行纯音听阈测试和多频稳态诱发电位测试,对测试结果进行比较。纯音听阈测试结果两组比较有统计学差异（P〈0．01）,多频稳态诱发电位测试结果两组比较无统计学差异（P〉0．05）,提示患者为伪聋。...     

Feelings of vulnerability in response to threatening messages: Effects of self-affirmation

We examined effects of self-affirmation on feelings of vulnerability and behavioral intentions following exposure to personally threatening messages varying in message strength. In Experiment 1, female alcohol consumers read a strong message linking alcohol to breast cancer risk. Self-affirmed participants exhibited higher feelings of vulnerability concerning consumption levels and personal risk. In Experiment 2, female caffeine consumers read a weak or strong message linking caffeine to breast disease. Self-affirmed participants reported greater feelings of vulnerability to breast disease and greater intentions to reduce caffeine consumption (relative to control participants) only when reading the strong message. Effects on intentions were mediated by effects on feelings of vulnerability. These studies show that feelings of vulnerability can mediate effects of self-affirmation on intentions to change behavior under threat, although only in the presence of strong messages.     

Is that a “No”? The Interpretation of Responses to Unwanted Sexual Attention

In this study, we used an interactive perspective to address the issue of responses to sexual harassment. We examined the effect of the consistency across time, consistency across types of advances, and assertiveness of a rejecting response on its perceived effectiveness. Participants were presented with scenarios that described responses to unwanted sexual attention and were required to rate the effectiveness of the responses for their clarity, content, and estimated effect on the future behavior of the perpetrator. The results show significant effects of consistency across time, consistency across types of advances, and assertiveness on perceived effectiveness of the response. As expected, an assertive response that was consistent across time and types of advances was perceived to be the most effective. This effect was found to be stronger for women than for men.     

Conditional discrimination in mentally retarded adults: the effect of training the component simple discriminations.

Two subjects with retardation who exhibited generalized identity matching, but who had extensive histories of failure to acquire arbitrary matching, were exposed to a series of conditions designed to train separately the components of a two-choice conditional discrimination. First, the successive discrimination between the sample stimuli was established by programming a different schedule of reinforcement in the presence of each sample stimulus. Schedule performance was acquired and maintained by both subjects, but neither acquired arbitrary matching. To train the simultaneous discrimination between the comparison stimuli, 1 subject was then exposed to a series of simple discrimination reversals and subsequently failed to acquire arbitrary matching. Both subjects acquired arbitrary matching under a procedure that maintained both the sample and the comparison discrimination by first presenting entire sessions composed of one sample-comparison relation and then gradually reducing the number of consecutive trials with the same sample until sample presentation was randomized (schedule performance was maintained). Removal of the schedule requirement had no effect on arbitrary matching accuracy. Both subjects subsequently demonstrated control by relations symmetric to the trained relations.