自闭症幼儿自主性共同注意的实验研究

为探索和发现自闭症幼儿的自主性共同注意的特征,以6名自闭症幼儿,以及在心理年龄与之匹配的弱智和正常儿童各6名作为研究对象,以实验和准实验的方法,进行此研究。同时还以秒为单位对实验过程与结果进行编码分析。结果表明,自闭症幼儿的自主性视觉方向所及目标物多于人,而人的目标中叉更多地锁定同伴而非教师。自闭症幼儿在唤起他人共同注意时多以“拉”和“抱”来替代指点行为。自主性共同注意的发生率与情绪有密切关系。     

自闭症幼儿的视觉性自我认知实验研究

通过对平均心理年龄为23个月的6名自闭症幼儿的实验研究．甄别他们是否能从视觉上进行自我与他人的分化认知并进一步探索自闭症幼儿对镜像自我认知与录像自我认知上的差异;以秒为单位．对实验结果和过程进行了编码分析。结果表明：这6名幼儿在看自己的录像时,比看同伴的表现出更多的关注和喜悦;对录像的自我进行认知寸表现出更大的关注和积极情绪。由此推断他们已具有初步的自我认知。     

自闭症儿童行为评定与社会认知发展的研究

本研究用自闭症儿童发展评定量表,自闭症儿童基本社会认知问卷以及“ＴｏＭ”实验,对４９名自闭症儿童及３０名弱智儿童进行了行为评定与社会认知的研究。研究结果为目前国内自闭症的诊断和治疗提供了新的有效工具及进一步明确化的理论依据,并为其教育训练提供了标准的新的启示。     

四岁儿童的自我参照效应研究

本研究通过两个实验探讨4岁儿童的自我参照效应。实验1与实验2分别采用3(4岁、5岁与7岁儿童)×2(自我参照与他人参照)与2(3岁与4岁儿童)×2(自我参照与他人参照)的混合设计。120名被试对物品进行所有权(ownership)识别并报告"这是我的××"或"这是李明的××",然后将图片放入相应的纸盒并再次报告,两分钟后进行自由回忆。结果显示:(1)自我参照条件下4岁组、5岁组与7岁组儿童自由回忆率有显著差异,他人参照条件下没有差异;(2)自我参照条件下4岁组儿童的自由回忆率显著高于3岁组,他人参照条件下没有差异。这说明,4岁儿童已经具有自我参照效应,同时,随着年龄的增长,自我参照条件下的自由回忆率呈现递增趋势,表明儿童自我参照效应的发展性特点。     

学前儿童朴素情绪理论的发展

对情绪的心理层面的理解是幼儿心理理论发展中出现得相对较迟的能力, 他们如何通过愿望和信念等不同的心理状态对人们的情绪做出判断？随着年龄的增长, 他们采用不同策略推测情绪的能力又发生了什么变化？本研究结合主人公愿望是否得到满足的状态, 通过利用图片故事个别测查的方法探查了90名3~5岁学前儿童在“内容错误信念”任务中对他人情绪的推测。结果显示, 年幼儿童、尤其是3岁幼儿的高兴情绪理解受其对情境是否满足愿望的认知的影响, 呈现出显著的“积极情绪偏差效应”; 学前儿童对情绪的认知表现出从不能采用信念—愿望策略到错误地采用信念—愿望策略、到正确采用信念—愿望策略的发展模式, 且其基于信念的情绪理解在一定程度上呈现出落后于其错误信念理解的“滞后效应”。结果还显示幼儿的惊奇情绪判断不仅由信念成分决定, 也受愿望理解的影响。这些结果突显出心理状态在儿童情绪理解中的重要作用, 揭示出学前儿童相对完整的朴素情绪理论发展模式。     

鼓励条件下幼儿提问的发展

以7所幼儿园的141名3～6岁儿童为被试,采用实验方法,探讨幼儿在8种新异刺激条件下提问的发展.结果表明:(1)3～6岁幼儿提问生成的数量随着年龄的增长而提高;(2)幼儿在对当前刺激产生陌生感或出现认知混乱时更容易生成问题;(3)立体刺激材料和平面刺激材料在引发幼儿提问生成上不存在差异;(4)3～6岁幼儿提问元认知随年龄的增长而提高.3～4岁期间是提问原因元认知快速发展时期.     

教师态度与指导方式对幼儿坚持性影响的实验研究

本研究采用3×2×2(年龄×教师态度×言语指导方式)三因素完全随机实验设计,考察了教师态度和言语指导对3~6岁幼儿坚持性的影响。其中幼儿年龄、教师态度及言语指导方式为实验的自变量,幼儿坚持完成任务的时间为实验因变量,设计4种实验情境,并随机选择沈阳市两所幼儿园,分层选取小、中、大班的幼儿作为实验研究的被试,年龄分布在3~6岁之间,每种情境下每个年龄段的有效被试各为30人,男女各半,共360人。研究结果表明:(1)3~6岁幼儿的坚持性随着年龄的增长而逐渐发展,且4~5岁是幼儿坚持性发展的转折期;(2)不同的教师态度对幼儿的坚持性影响显著;(3)不同的言语指导方式对幼儿坚持性影响显著;(4)教师积极态度下,多次言语指导对幼儿的坚持性会产生最积极的影响。     

任务、年龄和性别对幼儿情绪理解成绩的影响

以69名3-6岁幼儿为被试,考察了在简单面部表情识别任务、基于愿望的情绪理解任务、基于信念的情绪理解任务和冲突情绪理解任务四种条件下幼儿情绪理解的表现。结果表明:1)幼儿的情绪理解能力随年龄发展不断提高,各层次的情绪理解上存在先后顺序,情绪理解性别差异不显著;2)幼儿在情绪类型识别上表现出一定的偏好;3)幼儿在情绪理解任务上的表现总体上存在潜在的认知一致性,在不同层次上又具有显著的任务特异性。     

情绪效价与面孔类型对幼儿无意视盲的影响

幼儿对不同的情绪面孔图片存在不同的注意偏向,考察情绪效价与面孔类型对幼儿无意视盲的影响,可以帮助我们进一步认识幼儿对情绪面孔的注意偏向。本研究采用静态无意视盲的实验范式,通过2（面孔类型：符号化卡通、真人）×2（情绪效价：积极、消极）被试间完全随机设计,考察了111名幼儿（62.5±3.6个月,男生60名）在无意注意条件下对不同情绪效价和不同类型面孔的觉察情况。结果表明：（1）幼儿对积极情绪面孔的觉察率显著高于消极情绪面孔;（2）符号化卡通面孔与真人面孔的整体觉察率不存在显著差异;（3）积极情绪面孔中符号化卡通面孔的觉察率高于真人面孔。综上,情绪效价对无意视盲的影响会基于面孔类型的不同而不同,幼儿对卡通积极情绪面孔有更显著的注意偏向。     

情绪效价与面孔类型对幼儿无意视盲的影响

幼儿对不同的情绪面孔图片存在不同的注意偏向,考察情绪效价与面孔类型对幼儿无意视盲的影响,可以帮助我们进一步认识幼儿对情绪面孔的注意偏向。本研究采用静态无意视盲的实验范式,通过2（面孔类型：符号化卡通、真人）×2（情绪效价：积极、消极）被试间完全随机设计,考察了111名幼儿（62.5±3.6个月,男生60名）在无意注意条件下对不同情绪效价和不同类型面孔的觉察情况。结果表明：（1）幼儿对积极情绪面孔的觉察率显著高于消极情绪面孔;（2）符号化卡通面孔与真人面孔的整体觉察率不存在显著差异;（3）积极情绪面孔中符号化卡通面孔的觉察率高于真人面孔。综上,情绪效价对无意视盲的影响会基于面孔类型的不同而不同,幼儿对卡通积极情绪面孔有更显著的注意偏向。     

表情强度对自闭症儿童面部表情识别影响的实验研究

为探寻自闭症儿童在识别低强度（10%,30%）、中强度（40%,60%）和高强度（70%,90%）的愤怒和开心面部表情时,识别情绪类型的既有能力和差异。采用表情标签范式,用E-prime软件在电脑上呈现不同强度的3D合成面部表情刺激,分别对10名自闭症儿童、10名正常发育儿童和10名智障儿童进行了实验研究。结果发现,自闭症儿童在低强度表情时具有面部表情识别障碍,其对不同强度面部表情识别正确率显著低于智障儿童和正常发育儿童;自闭症儿童面部表情识别正确率与面部表情强度呈正相关,面部表情强度越大,自闭症儿童面部表情识别的正确率越高;自闭症儿童对低强度面部表情识别时,对开心表情的识别正确率高于愤怒表情,但是,在中强度和高强度面部表情识别时,存在显著的愤怒优势效应。     

Caregiver interactions with autistic children

Caregiver interactions with young autistic children were contrasted with those involving caregivers and developmentally matched mentally retarded and normal infants. Caregivers of autistic children were similar to other caregivers in their responsiveness to child nonverbal communication bids and in their engagement in mutually sustained play. Caregivers of autistic children were similar to caregivers of mentally retarded children in their greater use of control strategies. However, these two groups of caregivers differed in the particular strategies they used to shape their children's behavior. Caregivers of mentally retarded children pointed to objects while caregivers of autistic children spent more time physically holding their children on task. Individual differences within the autistic sample indicated that caregivers regulated their children's behavior less and showed more mutual play and positive feedback to more communicatively able autistic children. These findings suggest that caregivers respond differentially to the specific deficiencies shown by their children.     

STIMULUS OVERSELECTIVITY IN LEARNING DISABLED CHILDREN

Stimulus overselectivity, a phenomenon exhibited by autistic and institutionalized retarded individuals, was examined in mildly handicapped and nonhandicapped public school children. Subjects were 16 young, educable mentally retarded, 16 learning disabled, 15 nonhandicapped first- and second-graders, and 16 older, educable retarded students. The children were trained on a 3-component visual discrimination task and then tested on individual elements to determine which element or elements were controlling subject responses. Nine of the young educable mentally retarded children and eight of the learning disabled students showed some overselectivity. The majority of overselective retarded children were controlled by only one of the three components of the training cue, whereas the majority of the overselective learning disabled children responded to the discrimination task on the basis of two of the three components. No overselectivity was exhibited by the nonhandicapped students. All three cue components were also functional in controlling the responding of 14 of the 16 older retarded students, but two children were under the control of only one cue. The research indicated that in terms of overselectivity, learning disabled children respond more like young, mildly retarded children than they do like nonhandicapped ones. The demonstration of stimulus overselectivity in a sizable portion of a learning disabled sample may have implications for a more empirically based approach to this handicapped population.     

Comprehension in "hyperlexic" readers

Mentally retarded children who can read aloud written words better than one would expect from their Mental Age are often called hyperlexic. The reading comprehension thought to be impaired in such children was investigated in four experiments. Mentally retarded advanced decoders, including autistic and nonautistic children, were compared with younger nonretarded children matched for Mental Age and Reading Age. Experiment 1 established that mildly mentally retarded readers could match sentences to pictures as well as could be expected from their verbal ability. This was the same whether they read the sentences or heard them. Experiment 2 demonstrated that only the more able retarded subjects, but not the less able ones, used sentence context in a normal way in order to pronounce homographs. Experiments 3 and 4 showed that these same more able children could extract meaning at both sentence and story level, and their performance was indistinguishable from that of normal controls. Hence, it is doubtful whether these advanced decoders should be called hyperlexic. In contrast, the readers of relatively low verbal ability performed much worse than their normal controls. Although they could be induced under certain conditions to read sentence-by-sentence rather than word-by-word, they did not do so spontaneously. Furthermore, they did not make use of already existing general knowledge in order to answer questions about the stories they had read. The ability to comprehend in terms of large units of meaning seems to be specifically impaired in these low verbal ability fluent readers. We suggest that it is this impairment that marks true hyperlexia. Since there were no differences between autistic and nonautistic readers on any of our tasks, we conclude that hyperlexia is not an autism-specific phenomenon.     

TRAINING AND GENERALIZATION OF REACH-GRASP BEHAVIOR IN BLIND,RETARDED YOUNG CHILDREN

The effects of a graduated prompting treatment procedure were analyzed in three phases of an experiment on the training and generalization of reaching-grasp responding in 2- to 4-year-old blind, severely or profoundly retarded children. In Phase 1, we used a multiple-baseline across-subjects design to investigate the effectiveness of the treatment on midline reach-grasp responding. In Phase 2, we used a reversal design to investigate the effects of repeated implementations and withdrawals of the treatment. In both phases, generalization to right and left positions was measured. In Phase 3, in a multiple-baseline across-responses design, the treatment was implemented in right and left positions. Also in Phase 3, shift of stimulus control from toy-sound to verbal instructions was measured. The results showed that (a) the graduated prompting procedure was effective in training reach-grasp responding in all three children; (b) for one child, the effects were durable over repeated applications of the treatment procedure, but were not maintained during withdrawals; (c) for another child, the treatment procedure was effective in teaching reach-grasp responding in all three positions; and (d) for the same child, training of reach-grasp responding generalized to toys presented without sound, given only the verbal instruction.     

智障儿童空间参考框架的选择

采用Levinson的旋转实验,考察了智障儿童在空间任务中参考框架的选择。结果发现:(1)在非言语的空间操作任务中,智障儿童倾向于选择以观察者为中心的相对参考框架;(2)智障儿童的空间参考框架的选择倾向主要由他们的认知能力、语言能力、自我中心倾向以及习惯空间术语的影响导致。     

Stimulus overselectivity in autistic,trainable mentally retarded,and non-handicapped children: Comparative research controlling chronological (rather than mental) age

Much of the comparative research on stimulus overselectivity has been flawed by either failure to control for chronological age and language ability of the subjects or reliance on the controversial technique of matching on mental age. The present study investigated the prevalence of overselectivity in autistic, trainable mentally retarded, and non-handicapped children demonstrating some expressive speech. The ages of the children were between 6 years-6 months and 9 years-3 months. Thus, chronological age and language ability were controlled, rather than allowed to vary unsystematically. Results indicated no significant differences between the autistic and TMR samples, but significant differences between the handicapped samples and the non-handicapped group. Some, but not all, of the handicapped children displayed overselectivity.     

弱智儿童视觉-动作控制的实验研究

该研究探讨了弱智儿童视觉-动作控制能力。弱智儿童被试30人,平均年龄13.5岁,平均智商53.9。实验结果与正常人的结果作了比较。结果显示,弱智儿童的视觉-动作控制能力只相当五六岁正常儿童的水平,远落后于正常中青年及老年的水平。这表明,智力缺陷与发展水平对人的视觉-动作控制能力有明显影响。     

Speech-Language Outcomes of Hemispherectomy in Children and Young Adults

Children and young adults who had undergone right or left hemispherectomy for intractable seizures after a period of normal language acquisition were compared with respect to scores on speech and language tests. The majority of the subjects had full scale IQs in the borderline to mentally retarded range. Language scores were computed in relation to estimated mental age, not chronological age. On this basis, the left hemispherectomized children were more likely to show syntactic comprehension and rapid-rate auditory processing deficits than the right hemispherectomized. The two groups were similar to one another and to normal children in speech production. The findings are discussed in relation to developmental language disorders.     

Does medics' social identification increase handicap for mentally retarded patients?

Briefs about mentally retarded people are more negative than briefs about other social categories; professionals, such as medical doctors evaluate them most negatively of all. It was hypothesized (a) that medics' beliefs about mentally retarded people are mediated by psychological salience of their clinical social identification, rather than by personal characteristics that medics happen to share and (b) that such beliefs will bias decisions, rather than enhance accuracy. Forty-five doctors and medical students were randomly assigned to conditions designed to enhance salience of their shared clinical social identification or individual self-perceptions. Subjects completed semantic differentials about mentally retarded people and distinguished between slides of ‘mentally retarded’ and ‘normal’ children. Beliefs of subjects in the medical condition were significantly more negative than those in the personal condition. A signal detection analysis revealed no difference between conditions in subjects' ability to distinguish between children but showed that subjects in the medical condition were significantly more likely to judge a child ‘mentally retarded’ when in doubt. Results were discussed within an information processing framework and supported the idea that a salient clinical social identity can mediate beliefs that are likely to handicap patients.