Building Bridges: Cognitive Development in Typical and Atypical Populations

Most research reported in the Journal of Cognition and Development focuses on typically developing children—those who are following what is assumed to be the most common path. This special issue was designed to foster a dialogue between cognitive developmentalists who work on typical development and those who work on atypical development, with the goal of illustrating how recent findings can advance thinking in both fields. The 6 target articles and 2 commentaries in this special issue provide a compelling demonstration of the symbiotic nature of the study of typical and atypical cognitive development.     

Bridge Building and Other Possible Metaphors for Patching Over Discrepancies Between Typical and Atypical Development

The next several pages are intended as a Commentary on the six target articles bundled together as a Special Issue of the Journal of Cognition and Development — literature reviews and research reports all intended to “build bridges” between the study of cognitive development in typical and atypical populations.     

分心抑制的年龄差异

通过对负启动范式的说明,从年龄发展的角度对分心抑制作了理论上的探讨,介绍了几个有代表性的理论与假说,包括抑制衰退理论、多样化抑制系统模型和最佳测试时间假说;并从工作记忆能量与分心抑制的关系上探讨了基于年龄发展的资源依赖抑制模型和抑制控制假说。     

Parsing Reality: The Interactive Effects of Complex Syntax and Time Pressure on Cognitive Processing of Television Scenarios

In a variety of domains, complexity has been shown to be an important factor affecting cognitive processing. Complex syntax is 1 of the ways in which complexity has been shown to burden cognitive processing. Research has also shown that the determination of a message's truth, or reality, is affected by message complexity. Cognitive burden has been shown to cause unrealistic events to be judged as more real. Two experiments investigate the effects of syntactic complexity on the typicality assessment of previously rated typical and atypical television scenarios. Complex syntax exhibited a curvilinear effect on reality assessment, such that highly typical events became more unreal and highly atypical events became more real, whereas moderately typical scenarios were unaffected. The cognitive load added by complex syntax appeared to limit the processing of both reality and unreality cues. Adding time pressure was expected to increase cognitive load; however, it appeared to reverse the effects of complex syntax. Participants' syntax recognition results suggested that the complex syntax did burden processing as predicted. Tests with response latencies indicated that atypical scenarios and scenarios described with complex syntax were more slowly recognized.     

Getting Vygotskian about theory of mind: Mediation,dialogue, and the development of social understanding

The ideas of Vygotsky [Vygotsky, L. S. (1987). Thinking and speech. In The collected works of L. S. Vygotsky, (Vol. 1). New York: Plenum. (Original work published 1934.)] have been increasingly influential in accounting for social–environmental influences on the development of social understanding (SU). In the first part of this article, I examine how Vygotskian ideas have to date been recruited to explanations of the development of SU. Next, I present a model of SU development which draws on two implications of Vygotsky’s ideas: the importance of semiotic mediation for mental functioning, and the dialogic nature of the higher mental functions. I then consider the value of the proposed model in accounting for evidence from three areas of enquiry: the typical development of SU in infancy and early childhood, relations between individual differences in SU and social–environmental variables, and atypical development. The model is suggested to be particularly helpful in understanding the transition from intentional-agent to mental-agent understanding, and the role of language in SU. Remaining challenges include a need to specify further the cognitive processes underlying internalization, and to gather more extensive evidence on the roles of typical and atypical social experience in SU development.     

Learning to read and write in Spanish: phonology in addition to which other processes? / Aprendiendo a leer y escribir en español: además de la fonología, ¿qué otros procesos?

Abstract

This study reviews some of the most relevant cognitive skills related to literacy acquisition in Spanish. Beyond the well-known influence of phonological segmental skills, it highlights the growing importance of other cognitive skills needed for acquisition, whether explicit or implicit in nature, to which too little attention has been devoted, including suprasegmental or prosodic skills, morphological skills and the implicit learning of linguistic regularities. It appears that all these skills constitute relevant factors that should be taken into account in order to understand typical as well as atypical literacy development.     

Category typicality effects in children's memory performance: Qualitative and quantitative differences in the processing of category information

Kindergarten, third, and sixth graders (6, 9, and 12 years of age, respectively) received a cue-at-input/cue-at-output recall task, using category typical and atypical items that were based on either (1) children's conceptions of item typicality, or (2) adults' conceptions of item typicality. At each grade level, recall was greater with the child-defined lists than with the adult-defined lists, and typical items were recalled to a greater extent than atypical items. Further analyses items were recalled to a greater extent than atypical items. Further analyses revealed that the recall of typical items varied as a function of children's typicality ratings of items, and that the “typicality effect” in the adult-norm condition was due primarily to the childrennot realizing that many of the atypical items were appropriate category exemplars. In contrast, typicality effects in the child-norm condition were attributed to qualitative differences in the judged “goodness of example” of the typical and atypical items. The results were discussed in terms of the appropriateness of typicality as a dimension of children's natural language concepts, the role of age differences in knowledge base in affecting performance on a cognitive task, and of the importance of using child-generated norms in studies of children's processing of category information.     

Typical and atypical self‐regulation in adolescence: the importance of studying change over time

Researchers, parents, and teachers alike are concerned with the healthy development of self‐regulation, particularly because of its influence on a wide range of academic, economic, social, and health outcomes. However, little is known about how to characterize typical and atypical self‐regulation development, especially among adolescents, a population that is uniquely challenged with competing demands and expectations. The arguments of the present review are twofold: (1) it is critical to use fine‐grained longitudinal data to study change over time in self‐regulatory traits among youth, in order to fully understand typical and atypical self‐regulation; and (2) one compelling way to study the typical and atypical development of self‐regulation is through its intersection with externalizing problems. A thorough examination of the literature reveals that, on average, youth struggle with self‐regulation in adolescence, as evidenced by a decline in self‐regulatory capacities from age 10 to 14 and an improvement in self‐regulatory skills from age 14 to 19. Concomitantly, youth show mean‐level increases in externalizing problems (e.g., delinquency, aggression, alcohol/drug use, school behavioral problems) during adolescence. Further, co‐developmental associations indicate that poor self‐regulation leads adolescents to show greater increases in externalizing problems over time (vulnerability model); the act of engaging in these problematic behaviors leads youth to experience greater decreases in self‐regulation over time (scar model); self‐regulation and externalizing problems are distinct developmental constructs (spectrum model). The implications of studying trait and behavior change over time are highlighted, and future directions in this area of research are discussed.     

Is a bear white in the woods? Parallel representation of implied object color during language comprehension

Color is undeniably important to object representations, but so too is the ability of context to alter the color of an object. The present study examined how implied perceptual information about typical and atypical colors is represented during language comprehension. Participants read sentences that implied a (typical or atypical) color for a target object and then performed a modified Stroop task in which they named the ink color of the target word (typical, atypical, or unrelated). Results showed that color naming was facilitated both when ink color was typical for that object (e.g., bear in brown ink) and when it matched the color implied by the previous sentence (e.g., bear in white ink following Joe was excited to see a bear at the North Pole). These findings suggest that unusual contexts cause people to represent in parallel both typical and scenario-specific perceptual information, and these types of information are discussed in relation to the specialization of perceptual simulations.     

In any way,shape, or form? Toddlers’ understanding of shapes

Using the intermodal preferential looking paradigm, two-year-old children’s ability to discriminate valid (typical and atypical) squares, rectangles, triangles, and circles from invalid distractors was examined. The cognitive and environmental factors that might predict this ability were also investigated. Two-year-old children (N = 33) were able to discriminate squares, triangles, and circles, but not rectangles. No significant cognitive or environmental predictors of this ability were found. The results suggest that the ability to shape discriminate at age two is under considerable development and that other factors may be responsible for children’s ability to discriminate shapes.     

Microstructural integrity of the corpus callosum linked with neuropsychological performance in adolescents

Background: Diffusion tensor imaging (DTI) has revealed microstructural aspects of adolescent brain development, the cognitive correlates of which remain relatively uncharacterized. Methods: DTI was used to assess white matter microstructure in 18 typically developing adolescents (ages 16–18). Fractional anisotropy (FA) and mean diffusion (MD) were evaluated within the splenium and body of the corpus callosum in relation to cognitive performance. Results: Visuospatial construction abilities were associated with white matter integrity in both the splenium and body of the corpus callosum, while only splenium integrity was associated with language and psychomotor function. Conclusion: Results suggest that, for typically developing adolescents, white matter coherence positively relates to visuospatial, psychomotor, and language skills. These findings may have implications for the cognitive functioning of clinical populations in which typical white matter development is altered.     

Exploring face perception in disorders of development: Evidence from Williams syndrome and autism

Individuals with Williams syndrome (WS) and autism are characterized by different social phenotypes but have been said to show similar atypicalities of face‐processing style. Although the structural encoding of faces may be similarly atypical in these two developmental disorders, there are clear differences in overall face skills. The inclusion of both populations in the same study can address how the profile of face skills varies across disorders. The current paper explored the processing of identity, eye‐gaze, lip‐reading, and expressions of emotion using the same participants across face domains. The tasks had previously been used to make claims of a modular structure to face perception in typical development. Participants with WS (N=15) and autism (N=20) could be dissociated from each other, and from individuals with general developmental delay, in the domains of eye‐gaze and expression processing. Individuals with WS were stronger at these skills than individuals with autism. Even if the structural encoding of faces appears similarly atypical in these groups, the overall profile of face skills, as well as the underlying architecture of face perception, varies greatly. The research provides insights into typical and atypical models of face perception in WS and autism.     

Verification of Statements about Story Worlds That Deviate from Normal Conceptions of Time: What Is True aboutEinstein''s Dreams?

College students read chapters from a novel written by Alan Lightman (Einstein's Dreams) and later provided verification judgments on the truth/falsity of test statements. Each chapter described a different fictional village that incorporated assumptions about time that deviate from our normal TIME schema, e.g., citizens knowing exactly when the world will end, time flowing backward instead of forward. These novel assumptions about time provided interesting insights about life and reality. In two experiments, we examined whether readers could accurately incorporate these novel assumptions about time in the fictional story worlds, as manifested in the verification judgments for statements after story comprehension. The test statements included verbatim typical, verbatim atypical, inference typical, and inference atypical information from the perspective of mundane reality that meshes with a normal TIME schema. Verification ratings were collected on a 6-point scale in Experiment 1, whereas Experiment 2 used a signal–response technique in which binary true/false decisions were extracted at −.5, 1.5, 3.5, 5.5, and 10.0 s. The college students were measured on literary expertise, reading skill, working memory span, and reading time. Readers with comparatively high literary expertise showed truth discrimination scores that were compatible with aschema copy plus tagmodel, which assumes that readers are good at detecting and remembering atypical verbatim information; this model predicts better (and faster) truth discrimination for verbatim atypical statements than for verbatim typical statements. In contrast, fast readers with comparatively low literary expertise were compatible with afilteringmodel; this model predicts that readers gloss over (or suppress) atypical verbatim information and show advantages for verbatim typical information. All groups of readers had trouble inferentially propagating the novel assumptions about time in a fictional story world, but the slower readers were more accurate in their verification of the atypical inferences. Aconstruction–integrationmodel could explain the interactions among literary expertise, reading time, and the typicality of test statements.     

Considering Development in Developmental Disorders

Various theorists have argued for the importance of a developmental approach to studying typical development (Karmiloff-Smith, 1998; Lerner, 1996; Lerner & Hood, 1986; Masten & Cicchetti, 2010; Overton, 2014; Overton & Lerner, 2012, 2014), and there are reasons to believe that this issue is even more critical to the study of atypical development (Thomas, 2016; Thomas et al., 2009). In this article, we bring together perspectives from a variety of theorists to outline the importance of conceptualizing both typical and atypical development as a not-necessarily-linear, interconnected, and multifaceted set of individual trajectories embedded in real-world contexts (Karmiloff-Smith, 1998; Masten & Cicchetti, 2010; Overton & Lerner, 2012). Using examples from studies of atypical brain and behavior, we describe 6 lenses that can be applied to developmental research.     

Cognitive extension: the parity argument,functionalism, and the mark of the cognitive

During the past decade, the so-called “hypothesis of cognitive extension,” according to which the material vehicles of some cognitive processes are spatially distributed over the brain and the extracranial parts of the body and the world, has received lots of attention, both favourable and unfavourable. The debate has largely focussed on three related issues: (1) the role of parity considerations, (2) the role of functionalism, and (3) the importance of a mark of the cognitive. This paper critically assesses these issues and their interconnections. Section 1 provides a brief introduction. Section 2 argues that some of the most prominent objections against the appeal to parity considerations fail. Section 3 shows that such considerations are nevertheless unsuitable as an argument for cognitive extension. First, the actual argumentative burden is carried by an underlying commitment to functionalism, not by the parity considerations themselves. Second, in the absence of an independently motivated mark of the cognitive, the argument based on parity considerations does not get off the ground, but given such a mark, it is superfluous. Section 4 argues that a similar dilemma arises for the attempt to defend cognitive extension by a general appeal to functionalism. Unless it can be independently settled what it is for a process to be cognitive, functionalism itself will be undermined by the possibility of cognitive extension. Like parity considerations, functionalism is thus either unable to support cognitive extension or superfluous. Hence, nothing short of the specification of an appropriate mark of the cognitive that can be fulfilled not only by intracranial but also by extended processes will do as an argument for cognitive extension.     

Direct-to-Consumer Genetic Testing: Introduction to the Special Issue

This issue of the Journal of Genetic Counseling is devoted to direct-to-consumer (DTC) genetic testing. The 15 articles in this special issue address practice considerations for genetic counselors and other health care professionals; the benefits and limitations of DTC genetic testing; consumer and provider attitudes towards and experience with DTC testing; and the roles and educational needs of genetic counselors and other health care providers in providing and interpreting DTC genetic testing. In this introduction to the special issue, we provide a brief background on DTC genetic testing, summarize the important contribution of the articles included in this issue, and outline the essential work that still needs to be done as genetic counselors are increasingly engaged in discussions, education, and research about DTC genetic testing.     

汉语句子理解中物体隐含颜色心理模拟的ERPs研究

当前研究采用事件相关电位(ERPs)技术,同时沿用经典的句图匹配范式,考察句子理解中物体典型颜色与非典型颜色的心理加工过程在脑电活动上的反映。实验中被试先阅读句子再判断句子后呈现的图片物体是否在句子中出现过,句子中隐含的物体颜色或是关键物体的典型颜色或是非典型颜色。实验结果发现,典型颜色句子版本下句图不匹配条件比句图匹配条件引发了更大的N400效应;而非典型颜色句子版本下两者N400差异不显著。研究结果表明,人们在汉语句子理解过程中会实时对隐含的物体颜色信息进行心理模拟。并且,句子隐含物体颜色的典型性是造成匹配易化或不匹配易化的关键因素之一。     

Managing,Understanding, Applying,and Creating Knowledge in the Information Age: Next-Generation Challenges and Opportunities

New media, new knowledge practices, and concepts point to the need for greater understanding of cognitive processes underlying knowledge acquisition and generation in open informational worlds. The authors of the articles in this special issue address cognitive and instructional challenges surrounding multiple document comprehension—a prerequisite of digital literacy and knowledge work in the information age. In this article, we raise issues of conceptual clarity regarding constructs such as source and document, and discuss work in disciplinary literacy and knowledge-building communities to clarify uses of information resources to support knowledge creation. The discussion aims to (a) provide insights into the cognitive and social practices needed for students to manage, understand, apply, and create knowledge and (b) suggest research directions to advance these goals.     

Telemetric monitoring in the behavior sciences

This article reviews recent advances in telemetrics, a class of wireless information systems technology that can collect and transmit a wide variety of behavioral and environmental data remotely. Telemetrics include wearable computers that weave on-body sensors into articles of clothing, ubiquitous computers that embed sensors and transmitters seamlessly into the environment, and handheld devices, such as mobile phones and personal digital assistants, that can record cognitive and affective states. Examples of telemetric applications are provided to illustrate how this technology has been used in the behavioral sciences to unobtrusively and repeatedly gather physiological, behavioral, environmental, cognitive, and affective data in natural settings. Special issues relating to privacy and confidentiality, practical considerations, and statistical and measurement challenges when telemetrics are used are also discussed.     

To what extent does typicality boost semantic priming effects between members of their categories?

Atypical items of their semantic category yield more generalisation than their typical members when relearning in connectionist networks (Plaut, D. C. (1996). Relearning after damage in connectionist networks: toward a theory of rehabilitation. Brain and Language, 52(1), 25–82) and in empirical studies (Kiran, S., & Thompson, C. K. (2003). The role of semantic complexity in treatment of naming deficits: Training semantic categories in fluent aphasia by controlling exemplar typicality. Journal of Speech, Language, and Hearing Research, 46(4), 773–787). It seems therefore that atypical words provide more information about the overall structure of the semantic category due to their specific and shared features. In this view, atypical primes could strongly facilitate the processing of targets compared to typical primes, because typical primes contain little information about the variation between members within a category. In contrast, three semantic priming experiments in visual word recognition showed an advantage with the typical context, but not with the atypical one. These findings were observed in a variety of tasks, including lexical decision, categorisation and semantic judgment. Our results do not support the findings about generalisation in relearning and suggest that typicality effects in semantic priming mostly come from the activation of representative features of categories.