Developing new online calibration methods for multidimensional computerized adaptive testing

Multidimensional computerized adaptive testing (MCAT) has received increasing attention over the past few years in educational measurement. Like all other formats of CAT, item replenishment is an essential part of MCAT for its item bank maintenance and management, which governs retiring overexposed or obsolete items over time and replacing them with new ones. Moreover, calibration precision of the new items will directly affect the estimation accuracy of examinees’ ability vectors. In unidimensional CAT (UCAT) and cognitive diagnostic CAT, online calibration techniques have been developed to effectively calibrate new items. However, there has been very little discussion of online calibration in MCAT in the literature. Thus, this paper proposes new online calibration methods for MCAT based upon some popular methods used in UCAT. Three representative methods, Method A, the ‘one EM cycle’ method and the ‘multiple EM cycles’ method, are generalized to MCAT. Three simulation studies were conducted to compare the three new methods by manipulating three factors (test length, item bank design, and level of correlation between coordinate dimensions). The results showed that all the new methods were able to recover the item parameters accurately, and the adaptive online calibration designs showed some improvements compared to the random design under most conditions.     

Child Characteristics,Parent Education and Depressive Symptoms,and Marital Conflict Predicting Trajectories of Parenting Behavior from Childhood Through Early Adolescence in Taiwan

The study examined how child and parent characteristics, and contextual sources of stress, such as marital conflict predict initial status and trajectories of parent involvement, support, and harsh control, over a 4‐year period in families in Taiwan (n = 4,754). Based on Belsky's (1984) ecological model of parenting, three domains predicting parenting were tested, child characteristics (age cohort and gender), father and mother characteristics (education and depressive symptoms), and contextual sources of stress (marital conflict). The study followed two cohorts of children; the younger cohort was followed from first to fourth grade and the older cohort from fourth to seventh grade. Initially, fourth graders reported more parental involvement, support, and harsh control than first graders. However, involvement, support, and harsh control decreased across the 4 years for the older cohort as they transitioned to early adolescence. In the first year, girls reported more parental involvement and support and less harsh control than boys. Across the 4 years, involvement and support increased, and harsh control decreased for boys; whereas involvement stayed the same, support slightly decreased, and harsh control slightly increased for girls. Children whose parents were more educated reported more parent involvement, support, and harsh control in the first year. Children whose fathers were chronically depressed and whose parents were experiencing marital conflict reported decreasing parent involvement and support over the years.     

心理分离研究进展*

心理分离指的是个体在非工作时间里从工作中分离出来,个体不仅身体上远离工作场所,精神上也摆脱掉工作的事情,对员工工作压力的恢复过程非常关键。首先,文本概述了心理分离的概念及其进展;其次,论述了心理分离研究现状;最后,阐述了心理分离的已有研究存在的问题和未来研究的方向。     

焦虑对学生创造性的影响

以138名初二学生为被试,研究了特质焦虑和状态焦虑对学生创造性影响的问题。由于国外在此方面的研究结果不一致,研究的方法也缺乏生态化效度,因此本文试图通过教学现场实验,运用实际教学情境中的刺激来诱发学生的焦虑情绪,以探索在教学情境中学生焦虑对其创造性影响状况。研究结果表明,特质焦虑和状态焦虑对学生创造性的影响存在差异,其中特质焦虑对学生的创造性没有显著影响,而状态焦虑对学生的创造性有显著影响,即状态焦虑低分组在创造性测试的总分上明显高于状态焦虑高分组,且主要体现在流畅性和变通性两个方面。     

辩证法与过程哲学的对话 --科布教授访谈录

问:科布教授,很感谢您就"辩证法与过程哲学的对话"这一话题接受我的访问.正如您所知,辩证法是马克思哲学极为重要的理论基础之一.中国一些学者试图充分吸取现当代哲学的理论成果,从更大的理论视野对辩证法的当代形态及其哲学内涵进行新的阐释.在您看来,在辩证法与过程哲学之间,是否存在可沟通和对话的思想空间?如果答案是肯定的,那么,这种沟通和对话何以成为可能?     

分散注意条件下前瞻记忆的完成水平及其影响因素初探

本研究试图探讨在分散注意条件下前瞻记忆的完成水平及其影响因素。被试为98名大学生。在实验中,当前任务为数字听写,同时放映一段无声动画短片,将前瞻记忆任务(即看到某一靶线索画面时在相应数字上做记号)嵌入其中,动画片结束后要求被试完成若干与动画片内容有关的问题(事先通过指导语告知)。结果发现：1、前瞻记忆任务的成绩与被试的性别几乎无关,与材料熟悉程度也无显著相关;2、与被试对材料的喜好程度显著相关,提示即使在分散注意条件下,被试在完成前瞻记忆任务时也可能会根据偏好自动调整注意的分配。     

任务价值研究的回顾与展望

文章阐述了以往研究者对任务价值及内部结构的界定,回顾了任务价值研究的历史,介绍了任务价值研究的现状,讨论了目前任务价值研究中存在的问题和未来的发展趋势。     

时间顺序关系对语言理解的影响

通过2个实验探讨在语言理解中时间顺序相关性(顺时序、反时序、不相关)和时间间隔(200ms、500ms、1000ms)在日常事件认识中的作用。实验采用关系——认知范式(relarion-recognition paradigm)。结果表明：被试在有明显时间信息影响下,优先对将来取向(顺时序)的事件进行加工处理。对时间上不相关的事件比对顺时序和反时序的事件加工得快而准。但在无明显时间信息影响时,首先受到本身词义的影响,继而受到隐含的时间信息的影响。     

教师教学风格的调查研究

采用教师教学风格量表(TST1),对142名教师的教学风格进行了调查。结果表明：(1)从总体上看,教师的教学风格以激进型、立法型、评判型和整体型四种教学风格为主,这四种教学风格是相对复杂、有创造性、效率较高的教学风格;(2)相对于教龄较短的教师,教龄在20年以上的教师教学风格更加倾向于保守型;(3)相对于文科教师,理科教师和其它学科教师更加倾向于执行型教学风格;(4)一般教师相对于高效能教师更加倾向于执行型、保守型的教学风格,而执行型、保守型是相对简单、效率低和不受欢迎的教学风格(5)1—4年教龄教师中高效能教师的比例远低于5年以上教龄的教师,说明教师进入成熟阶段以后在教学经验、教学风格等方面不断完善,教学效能得以极大提高。