Individuation of pairs of objects in infancy

Looking-time studies examined whether 11-month-old infants can individuate two pairs of objects using only shape information. In order to test individuation, the object pairs were presented sequentially. Infants were familiarized either with the sequential pairs, disk-triangle/disk-triangle (XY/XY), whose shapes differed within but not across pairs, or with the sequential pairs, disk-disk/triangle-triangle (XX/YY), whose shapes differed across but not within pairs. The XY/XY presentation looked to adults like a single pair of objects presented repeatedly, whereas the XX/YY presentation looked like different pairs of objects. Following familiarization to these displays, infants were given a series of test trials in which the screen was removed, revealing two pairs of objects in one of two outcomes, XYXY or XXYY. On the first test trial, infants familiarized with the identical pairs (XY/XY) apparently expected a single pair to be revealed because they looked longer than infants familiarized with the distinct pairs (XX/YY). Infants who had seen the distinct pairs apparently expected a double pair outcome. A second experiment showed outcomes of a single XY pair. This outcome is unexpected for XX/YY-familiarized infants but expected for XY/XY-familiarized infants, the reverse of Experiment 1. This time looking times were longer for XX/YY infants. Eleven-month-olds appear to be able to represent not just individual objects but also pairs of objects. These results suggest that if they can group the objects into sets, infants may be able to track more objects than their numerosity limit or available working memory slots would normally allow. We suggest possible small exact numerosity representations that would allow tracking of such sets.     

“绝对自我”：寻求哲学的拱顶石——赖因霍尔德哲学与费希特知识学第一原理

康德哲学因其“自在之物”的赘疣及将认知、情感、欲求诸先验机能“单纯并列”的致思格局,引发了其后的康德主义者们重新塑造“先验唯心主义”体系,以使其成为严格意义上的科学的种种努力。赖因霍尔德关于哲学作为严格意义上的科学应置根于一个单一、绝对无条件的原理的思想,被包括费希特在内的哲学家们广为接受,但其作为第一原理推出的“意识命题”却因着对主体及其能动性的漠视而未能经受住他自己所提出的第一原理标准的检视。基于独断论思维的怀疑论者针对康德哲学因“自在之物”引发的内在学理上的扦格向先验唯心主义发起严峻挑战,这亦促使费希特思索建构一个将主体性原则贯彻到底的新的学思体系。费希特通过对人的“自我意识”所做的独立而深彻的思考,为其知识学体系寻获了坚实的立足点——“绝对自我”。作为绝对自发、自我圆足的原初存在,“绝对自我”集主体的能动性与客体的受动性于一身,具备一种自我眷顾、自作贞认的本质。知识学通过“绝对自我”将康德哲学倚重主体的精神性状推向极致,彻底放逐了“自在之物”,亦有力回应了怀疑论者的诘难。     

不同加工任务下情绪词的掩蔽重复启动效应

重复可促进信息的加工,人们对一定时间范围内重复出现的刺激能够更快更准的做出反应.本研究采用掩蔽重复启动范式,考察了情绪与非情绪判断任务中积极与消极词的阈下重复所产生的启动效应.结果发现.情绪判断任务下积极词反应优于消极词,并且表现出更大的重复启动效应;而具体抽象判断任务中,非重复启动条件下积极词反应仍优于消极词,但消极词重复产生了更大的启动作用,在启动条件下其反应优于积极词.     

汉、英句法结构相似性对英语句法加工的影响

本研究采用句法判断任务,考察了汉英句法结构相似性对英语句法加工的影响.30名英语高熟练和29名英语低熟练水平的汉语母语者参加了实验.结果发现,汉英句法结构的相似性和英语的熟练程度均影响英语句法的加工.具体表现为,与汉语句法结构相似性越高的英语句子,句法判断的准确率越高;被试英语熟练度越高,句法判断的准确率越高.研究结果表明,母语经验是影响第二语言句法加工的重要因素.     

城乡未成年人网络成瘾及其归因研究

未成年入网络成瘾问题已成为社会关注的热点之一,但多在城区抽取样本进行研究.本课题采用分层整体抽样法,在河南省城镇和乡村随机抽取未成年人930名,应用网络成瘾界定量表及青少年生活事件、EPQ问卷进行调查分析,发现河南省城乡未成年人网络成瘾率为4.52%,城镇未成年人网络成瘾率显著性高于农村学生,男性网络成瘾率显著性高于女性;网络成瘾与未成年人生活事件、人格特质呈显著相关,并进入回归方程.     

老年人社会适应性与主观幸福感的结构关系

该研究通过编制适应老年人的社会适应性与主观幸福感问卷,探讨了老年人社会适应性与主观幸福感的结构关系。结果表明,问卷具有良好的结构效度和内部一致性信度,人际交往适应性和角色转换适应性对主观幸福感各维度具有显著的预测价值,生活自理适应性对积极情感具有显著预测作用,但预测力不如人际交往适应性和角色转换适应性,而社会整体变化适应性对主观幸福感不存在预测的价值。地区差异对老年人社会适应性和主观幸福感结构预测关系存在显著的调节效应。     

Sensory memory consolidation observed: Increased specificity of detail over days

Memories are usually multidimensional, including contents such as sensory details, motivational state and emotional overtones. Memory contents generally change over time, most often reported as a loss in the specificity of detail. To study the temporal changes in the sensory contents of associative memory without motivational and emotional contents, we induced memory for acoustic frequency by pairing a tone with stimulation of the cholinergic nucleus basalis. Adult male rats were first tested for behavioral responses (disruption of ongoing respiration) to tones (1–15 kHz), yielding pre-training behavioral frequency generalization gradients (BFGG). They next received three days of training consisting of a conditioned stimulus (CS) tone (8.00 kHz, 70 dB, 2 s) either Paired (n = 5) or Unpaired (n = 5) with weak electrical stimulation (～48 μA) of the nucleus basalis (100 Hz, 0.2 s, co-terminating with CS offset). Testing for behavioral memory was performed by obtaining post-training BFGGs at two intervals, 24 and 96 h after training. At 24 h post-training, the Paired group exhibited associative behavioral memory manifested by significantly larger responses to tone than the Unpaired group. However, they exhibited no specificity in memory for the frequency of the tonal CS, as indexed by a flat BFGG. In contrast, after 96 h post-training the Paired group did exhibit specificity of memory as revealed by tuned BFGGs with a peak at the CS-band of frequencies. This increased detail of memory developed due to a loss of response to lower and higher frequency side-bands, without any change in the absolute magnitude of response to CS-band frequencies. These findings indicate that the sensory contents of associative memory can be revealed to become more specific, through temporal consolidation in the absence of non-sensory factors such as motivation and emotion.     

情绪感染问卷的中国化修订与信效度检验

该研究旨在编制情绪感染问卷并探讨问卷的信度与效度,问卷以Doherty编制的《情绪感染问卷》(the emotional contagion scale)作为蓝本,删除了不适合东方文化的项目,增加了符合中国人的情绪情境和展现情绪方式的项目,经过预测修订后,最终问卷包含5个维度25个项目,正式施测共回收747份有效问卷,并对数据进行了信效度检验。结果表明,探索性因素分析KMO为0.802,总问卷的标准化的Cronbach’sα系数为0.852,项目分析表明项目的鉴别指数D值在0.340~0.479之间,验证性因素分析具有较好的模型拟合度,问卷的重测信度与效标关联效度均达到显著水平。情绪感染问卷的信效度均达到了测量学的要求。     

Restraint and Cancellation: Multiple Inhibition Deficits in Attention Deficit Hyperactivity Disorder

We used variations of the stop signal task to study two components of motor response inhibition—the ability to withhold a strong response tendency (restraint) and the ability to cancel an ongoing action (cancellation)—in children with a diagnosis of attention deficit hyperactivity disorder (ADHD) and in non-ADHD controls of similar age (ages 7–14 years). The goal was to determine if restraint and cancellation were related and if both were deficient in ADHD. The stop signal task involved a choice reaction time task (go task) which required a rapid response. The demand for inhibitory control was invoked through the presentation of a stop signal on a subset of go trials which required that the ongoing response be suspended. The stop signal was presented either concurrently with the go signal (restraint version) or after a variable delay (cancellation version). In Study 1, we compared ADHD and control children on the cancellation version of the stop task; in Study 2, we compared ADHD and controls on the restraint version. In Study 3, a subset of ADHD and control participants completed both tasks so that we could examine convergence of these dimensions of inhibition. Compared to control participants, ADHD participants showed a deficit both in the ability to cancel and to restrain a speeded motor response. Performance on the restraint version was significantly correlated with performance on the cancellation version in controls, but not in ADHD participants. We conclude that ADHD is associated with deficits in both restraint and cancellation subcomponents of inhibition.     

小学优等生与学习不良学生智力特征的比较研究

本研究运用 WISC-CR研究了小学阶段一、三、五年级优生与学习不良儿童在智力水平与智力结构上的异同。研究结果表明 :1优生与学习不良儿童在智力水平上有十分显著的差异 ,优生的平均智商为 1 2 0 .1 ,学习不良儿童的平均智商为 97.4;2优生在操作分量表与语言分量表上的得分比较均匀 ,但学习不良儿童的操作智商显著地优于语言智商 ;3优生与学习不良儿童在智力结构上也不尽相同 ,优生在词汇、积木、类同等分测验上的得分高 ,在算术、背数、排列等分测验上的得分较低 ;学习不良儿童在拼图、译码、填图、词汇等分测验上的得分较高 ,在常识、算术、背数等上的得分较低。