大学生问题发现过程的问题行为图研究

在潜藏式与矛盾式情境两类问题发现任务中,采用出声思维的方法研究问题发现能力高与低两类各10名大学生问题发现过程的内部认知活动。利用问题行为图技术进行个案分析,着重考察大学生在知识状态、思维操作及问题行为图等方面的表现。基于加工性质把知识编码为陈述性、程序性和策略性知识;基于信息来源编码为情境、内部和推断信息;基于思维关联与转换,把思维操作编码为独立、横向、纵向与元认知思维。研究表明:(1)问题发现中,在内部信息、纵向思维以及纵横交错型行为图的使用频次上,潜藏情境高于矛盾情境;在情境信息、横向思维以及横向平行和横向归纳型行为图的使用频次上,矛盾情境高于潜藏情境。(2)高低能力组被试在知识状态、思维操作与问题行为图的使用上差异均不显著,可能是由于上述方面涉及问题发现的基本认知过程和思维规律,具有普遍性特征。     

Putting lexical constraints in context into the visual-world paradigm

Prior eye-tracking studies of spoken sentence comprehension have found that the presence of two potential referents, e.g., two frogs, can guide listeners toward a Modifier interpretation of Put the frog on the napkin… despite strong lexical biases associated with Put that support a Goal interpretation of the temporary ambiguity (Tanenhaus, M. K., Spivey-Knowlton, M. J., Eberhard, K. M. & Sedivy, J. C. (1995). Integration of visual and linguistic information in spoken language comprehension. Science, 268, 1632–1634; Trueswell, J. C., Sekerina, I., Hill, N. M. & Logrip, M. L. (1999). The kindergarten-path effect: Studying on-line sentence processing in young children. Cognition, 73, 89–134). This pattern is not expected under constraint-based parsing theories: cue conflict between the lexical evidence (which supports the Goal analysis) and the visuo-contextual evidence (which supports the Modifier analysis) should result in uncertainty about the intended analysis and partial consideration of the Goal analysis. We reexamined these put studies (Experiment 1) by introducing a response time-constraint and a spatial contrast between competing referents (a frog on a napkin vs. a frog in a bowl). If listeners immediately interpret on the… as the start of a restrictive modifier, then their eye movements should rapidly converge on the intended referent (the frog on something). However, listeners showed this pattern only when the phrase was unambiguously a Modifier (Put the frog that’s on the…). Syntactically ambiguous trials resulted in transient consideration of the Competitor animal (the frog in something). A reading study was also run on the same individuals (Experiment 2) and performance was compared between the two experiments. Those individuals who relied heavily on lexical biases to resolve a complement ambiguity in reading (The man heard/realized the story had been…) showed increased sensitivity to both lexical and contextual constraints in the put-task; i.e., increased consideration of the Goal analysis in 1-Referent Scenes, but also adeptness at using spatial constraints of prepositions (in vs. on) to restrict referential alternatives in 2-Referent Scenes. These findings cross-validate visual world and reading methods and support multiple-constraint theories of sentence processing in which individuals differ in their sensitivity to lexical contingencies.     

Cognitive effects of racial diversity: White individuals’ information processing in heterogeneous groups

Two experiments tested the hypothesis that mere anticipation of membership in a racially heterogeneous group can lead White individuals to exhibit more thorough information processing. In Study 1 White participants who expected to discuss a race-relevant topic with a racially diverse group exhibited better comprehension of topical background readings than did Whites assigned to all-White groups. Study 2 replicated these results and indicated that the processing effects were attributable in part to an increase in race-relevant thought activation among White individuals in a diverse setting. No such anticipatory effects of racial composition were observed for Whites expecting to discuss race-neutral topics. Taken together, these studies render untenable the assumption that the observable effects of racial diversity are wholly attributable to the novel contributions of non-White group members. More generally, they emphasize the need for additional empirical investigation of the cognitive processes through which racial heterogeneity influences individual and group performance.     

Psychosocial factors and reading difficulties: students with reading difficulties drawn from a representative population sample

In a representative sample of 2,464 Norwegian adolescents, aged 12-15 years, 7.8% (n= 191) reported reading difficulties (RD). No gender difference was found. Adolescents with RD were compared to classmates on psychosocial variables. In univariate analysis, RD adolescents report higher levels of depressive symptoms, more school stress, worried more about going to school, had lower school grades and lower attachment to parents than those without RD. They also scored lower on Global Self-worth and on Social Acceptance scales. Further, they reported reduced levels of psycho-functioning during the previous year because of mental health problems, they had received more help and had used more medication for such problems. In a multivariate logistic regression analysis, receiving help for mental health problems and reduced psycho-functioning showed the strongest associations with student RD status. No gender interactions were found. The study demonstrated important differences between adolescents with and without RD.     

Teaching Beginning Braille Reading Using an Alphabet or Uncontracted Braille Approach

This study examined the effects of using a research based print reading program modified to accommodate beginning braille readers using an alphabet or uncontracted braille reading approach with five beginning braille readers. Four of the 5 participants displayed a clear increase in their ability to read high frequency words when they began using the Early Steps reading program modified to an Early Steps Alphabet Braille Reading Program. Study findings indicate that access to reading activities and materials afforded to sighted peers resulted in improved reading outcomes for children with visual impairments. Teachers, participants, and family members all viewed the use of the uncontracted braille reading program and materials favorably. Specialized reading instruction was also perceived as beneficial by teachers of students with visual impairments when the training addressed the specific needs of braille readers.     

样例的编码方式对问题解决迁移的影响及心理机制

以概率原理为材料,通过两个实验考察了样例的编码方式对问题解决迁移的影响及其心理机制。实验1探讨了样例的变异性与不同的自我解释模式结合对被试解决不同程度迁移问题的影响;实验2运用大声思维技术,进一步探讨不同样例的变异性和不同自我解释模式编码样例的条件下学习者的学习活动和问题解决的特点。结果表明:样例的变异性和诱发自我解释模式结合能有效地促进原理图式的获得和迁移;自我解释对理解原理和获得原理的概化图式有着重要作用。不同的学习者自我解释的特征并不一致,存在着个体差异。     

The Role of Native-Language Phonology in the Auditory Word Identification and Visual Word Recognition of Russian–English Bilinguals

Does native language phonology influence visual word processing in a second language? This question was investigated in two experiments with two groups of Russian-English bilinguals, differing in their English experience, and a monolingual English control group. Experiment 1 tested visual word recognition following semantic categorization of words containing four phonological vowel contrasts (\({/{{\rm i}}/-/{{\rm u}}/, /{{\rm I}}/-/\wedge/, /{{\rm i}}/-/{{\rm I}}/, /{{\varepsilon}}/-/\ae/}\)). Experiment 2 assessed auditory identification accuracy of words containing these four contrasts. Both bilingual groups demonstrated reduced accuracy in auditory identification of two English vowel contrasts absent in their native phonology (\(/{{\rm i}}/-/{{\rm I}}/, /{\varepsilon}/-/\ae/\)). For late- bilinguals, auditory identification difficulty was accompanied by poor visual word recognition for one difficult contrast (/i/-/I/). Bilinguals’ visual word recognition moderately correlated with their auditory identification of difficult contrasts. These results indicate that native language phonology can play a role in visual processing of second language words. However, this effect may be considerably constrained by orthographic systems of specific languages.     

Naming problems do not reflect a second independent core deficit in dyslexia: Double deficits explored

The double deficit hypothesis states that naming speed problems represent a second core deficit in dyslexia independent from a phonological deficit. The current study investigated the main assumptions of this hypothesis in a large sample of well-diagnosed dyslexics. The three main findings were that (a) naming speed was consistently related only to reading speed; (b) phonological processing speed and naming speed loaded on the same factor, and this factor contributed strongly to reading speed; and (c) although general processing speed was involved in speeded naming of visual items, it did not explain the relationship between naming speed and reading speed. The results do not provide support for the existence of a second independent core naming deficit in dyslexia and indicate that speeded naming tasks are mainly phonological processing speed tasks with an important addition: fast cross-modal matching of visual symbols and phonological codes.     

Incremental and predictive utility of formative assessment methods of reading comprehension

Formative assessment measures are commonly used in schools to assess reading and to design instruction accordingly. The purpose of this research was to investigate the incremental and concurrent validity of formative assessment measures of reading comprehension. It was hypothesized that formative measures of reading comprehension would contribute more to our understanding of students' overall reading abilities than simply oral reading fluency (ORF). It was also hypothesized that measures could be modeled in a meaningful way to explain student performance on criterion measures of academic competence. Four formative measures of reading comprehension – maze (MZ), retell fluency (RTF), written retell (WRT), and sentence verification technique (SVT) – were used to measure unique aspects of reading comprehension through production-type responses. Results suggested that reading comprehension measures, when combined with ORF, added to the total variance associated with reading ability and were reliable indicators of student performance on a high stakes criterion-referenced assessment of grade-level literacy.     

Increasing Elementary-aged Students’ Reading Fluency with Small-group Interventions: A Comparison of Repeated Reading, Listening Passage Preview, and Listening Only Strategies

Although reading fluency is one of the five essential early-reading skills students must develop, many elementary-aged students in the United States do not read age-appropriate material fluently. As such, small-group interventions are practical and often more time efficient than individualized interventions aimed to address this problem. However, few small-group interventions targeting students’ reading fluency have been empirically evaluated. The primary purpose of this study was to examine three small-group reading interventions that have been used to improve students’ reading fluency (repeated reading, listening passage preview, and listening only). Using an alternating-treatments design, the effects of each intervention were evaluated with four-second-grade students with average to below average reading skills. Students’ words read correctly per minute (immediately following and 2 days after intervention) served as the outcome measures. Results supported the repeated reading intervention, followed by listening passage preview, as most effective. Findings also suggested that improvements from each intervention remained 2 days later.