Symbolic representation across domains in preschool children

The study examines children's understanding of notational representation. Children 3 to 5 years old were shown a card containing a notation and told what it said. The children were asked to say what was printed on the card 3 times: when it was under a display named by the notation, when it was under a different display, and finally when it had been returned to the original position. In Study 1, the card contained a word or a picture indicating object identity or a numeral or an analogue indicating quantity. All the children could solve the problems containing pictures, numerals, or analogues, but the word condition was difficult and children believed that the word changed when the card moved to the new display. In Study 2, the comparison between object names and quantities was made more equitable by introducing easy and difficult versions of each condition. This time, there was little difference between cards indicating names and those indicating quantities but large differences in children's ability to solve the problem as a function of their familiarity with the notation that was written. The results point to weaknesses in children's understanding of how representations refer to meanings.     

Children's avoidance of lexical overlap: a pragmatic account

Children tend to choose an unfamiliar object rather than a familiar one when asked to find the referent of a novel name. This response has been taken as evidence for the operation of certain lexical constraints in children's inferences of word meanings. The present studies test an alternative--pragmatic--explanation of this phenomenon among 3-year-olds. In Study 1 children responded to a request for the referent of a novel label in the same way that they responded to a request for the referent of a novel fact. Study 2 intimated that children assume that labels are common knowledge among members of the same language community. Study 3 demonstrated that shared knowledge between a speaker and listener plays a decisive role in how children interpret a speaker's request. The findings suggest that 3-year-olds' avoidance of lexical overlap is not unique to naming and may derive from children's sensitivity to speakers' communicative intentions.     

Less is more: executive function and symbolic representation in preschool children

Executive function is recognized as a critical component of children's cognitive and social development. In two studies, a measure of executive function that had been used in research with chimpanzees was adapted for preschoolers. On this task, called Less Is More, children must point to a smaller reward (two candies) to receive a larger reward (five candies). In Study 1 (N= 101), performance was significantly related to age (3 vs. 4), verbal ability, and established measures of executive function. In Study 2 (N= 128), symbolic representations substituted for real candies in this task. Three-year-olds' performance improved significantly as a function of symbolic distancing. This research has implications for the role of symbol systems in the development of executive control over thought and action.     

自读、伴读和指读对2~3岁幼儿图画书阅读中文字注视的影响

幼儿对文字的关注是内化文字形式和功能（文字意识）的基本途径,如何有效提高年幼儿童对文字的关注是一个具有重要实践意义的课题。本研究以54名2~3岁幼儿为研究对象,记录和分析幼儿在自读、伴读和指读三种方式下阅读图画书的眼动行为。结果发现：1）自读和伴读方式下,2~3岁幼儿对文字和图画的关注具有相同的眼动模式,并且对文字的关注程度均较低;2）指读可显著提高幼儿对文字的关注频率,同时对文字注视时间、次数以及关注速度均表现出一定的促进作用;3）对图画的整体分析显示,指读与伴读/自读方式之间的眼动模式差异不显著;而进一步对图画的局部分析表明：指读不影响幼儿图画关注的全面性和有效性。综上所述,指读在一定程度上能够促进年幼儿童对文字的关注,同时动态手势也不抢占儿童阅读图画的注意资源。     

Semantic facilitation with pictures and words

The present experiments explored the role of processing level and strategic factors in cross-form (word-picture and picture-word) and within-form (picture-picture and word-word) semantic facilitation. Previous studies have produced mixed results. The findings presented in this article indicate that semantic facilitation depends on the task and on the subjects' strategies. When the task required semantic processing of both picture and word targets (e.g., category verification), equivalent facilitation was obtained across all modality combinations. When the task required name processing (e.g., name verification, naming), facilitation was obtained for the picture targets. In contrast, with word targets, facilitation was obtained only when the situation emphasized semantic processing. The results are consistent with models that propose a common semantic representation for both picture and words but that also include assumptions regarding differential order of access to semantic and phonemic features for these stimulus modalities.     

汉语儿童英语口语词汇与阅读学习的关系

以120名四、五年级小学儿童为被试,探讨汉语儿童英语口语词汇与阅读学习的关系,并检验了英语语音意识在其中的中介作用。结果表明:(1)汉语儿童的英语口语词汇与阅读学习之间存在密切关系。控制一般认知能力和母语口语词汇的影响后,英语口语词汇对阅读学习仍具有显著的预测作用。其中,英语口语词汇产生对于英语单词认读的预测作用更重要,英语口语词汇理解则对英语单词理解的预测作用更重要。(2)英语口语词汇产生既可以直接作用于英语单词认读、理解和假词拼读,也部分通过英语语音意识的中介间接作用于英语阅读;英语口语词汇理解对英语单词理解也具有直接作用,并部分地通过英语语音意识的中介发挥间接作用     

Influence of verbal and nonverbal references to print on preschoolers' visual attention to print during storybook reading

How much do preschool children look at print within storybooks when adults read to them? This study sought to answer this question as well as to examine the effects of adult verbal and nonverbal references to print on children's visual attention to print during storybook reading. Forty-four preschool-aged children participated in this study designed to determine the amount of visual attention children paid to print in 4 planned variations of storybook reading. Children's visual attention to print was examined when adults commented and questioned about print (verbal print condition) or pointed to and tracked the print (nonverbal print condition), relative to 2 comparison conditions (verbatim reading and verbal picture conditions). Results showed that children rarely look at print, with about 5%-6% of their fixations allocated to print in verbatim and verbal picture reading conditions. However, preschoolers' visual attention to print increases significantly when adults verbally and nonverbally reference print; both reading styles exerted similar effects. The authors conclude that explicit referencing of print is 1 way to increase young children's contacts with print during shared storybook reading.     

Relating print and speech: the effects of letter names and word position on reading and spelling performance

From an early age, children can go beyond rote memorization to form links between print and speech that are based on letter names in the initial positions of words (Treiman & Rodriguez, 1999; Treiman, Sotak, & Bowman, 2001). For example, children's knowledge of the name of the letter t helps them learn that the novel word TM is pronounced as team. Four experiments were carried out to determine whether letter names at the ends of words are equally useful. Four- and five-year-olds derived little benefit from such information in reading (Experiments 1 and 3) or spelling (Experiment 2), although adults did (Experiment 4). For young children, word-final information appears to have less influence on reading and spelling performance than does word-initial information. The results help delineate the circumstances under which children can go beyond a logographic approach in learning about print.     

The relative strengths of indirect and direct word learning

Indirect word learning lacks many of the overt social-pragmatic cues to reference available in direct word learning, yet the two result in equally robust mappings when comprehension is assessed immediately after learning. The 3 studies reported here investigated how 3-year-olds (N=96) respond to more challenging tests of the relative strengths of indirect and direct word learning. In Study 1, children's comprehension of indirectly and directly learned proper and common names was tested after a 2-day delay. Both types of learning resulted in proper name mappings that picked out an individual and in common name mappings that could be extended to another category member. In Studies 2 and 3, children's comprehension was tested after they had been provided with additional, and sometimes inconsistent, information about the scope of previously learned words. There was a hint of a difference between indirect and direct word learning. but results overall suggested that the two were equivalent.     

Children's understanding of counting

This study examines the abstractness of children's mental representation of counting, and their understanding that the last number word used in a count tells how many items there are (the cardinal word principle). In the first experiment, twenty-four 2- and 3-year-olds counted objects, actions, and sounds. Children counted objects best, but most showed some ability to generalize their counting to actions and sounds, suggesting that at a very young age, children begin to develop an abstract, generalizable mental representation of the counting routine. However, when asked "how many" following counting, only older children (mean age 3.6) gave the last number word used in the count a majority of the time, suggesting that the younger children did not understand the cardinal word principle. In the second experiment (the "give-a-number" task), the same children were asked to give a puppet one, two, three, five, and six items from a pile. The older children counted the items, showing a clear understanding of the cardinal word principle. The younger children succeeded only at giving one and sometimes two items, and never used counting to solve the task. A comparison of individual children's performance across the "how-many" and "give-a-number" tasks shows strong within-child consistency, indicating that children learn the cardinal word principle at roughly 3 1/2 years of age. In the third experiment, 18 2- and 3-year-olds were asked several times for one, two, three, five, and six items, to determine the largest numerosity at which each child could succeed consistently. Results indicate that children learn the meanings of smaller number words before larger ones within their counting range, up to the number three or four. They then learn the cardinal word principle at roughly 3 1/2 years of age, and perform a general induction over this knowledge to acquire the meanings of all the number words within their counting range.     

Less is More: How manipulative features affect children's learning from picture books

Picture books are ubiquitous in young children's lives and are assumed to support children's acquisition of information about the world. Given their importance, relatively little research has directly examined children's learning from picture books. We report two studies examining children's acquisition of labels and facts from picture books that vary on two dimensions: iconicity of the pictures and presence of manipulative features (or "pop-ups"). In Study 1, 20-month-old children generalized novel labels less well when taught from a book with manipulative features than from standard picture books without such elements. In Study 2, 30- and 36-month-old children learned fewer facts when taught from a manipulative picture book with drawings than from a standard picture book with realistic images and no manipulative features. The results of the two studies indicate that children's learning from picture books is facilitated by realistic illustrations, but impeded by manipulative features.     

Picture Naming and Lexical Access in Italian Children and Adults

Italian-speaking adults and 5- to 6-year-old children were compared in a timed picture-naming task, measuring latency as well as name agreement, in relation to frequency, age of acquisition (AoA), picture complexity, word length, word complexity, semantic category, phonological characteristics, and grammatical gender. Although children were slower and less accurate than adults, correlations of dependent variables with lexical predictors were similar in both groups. However, word complexity had effects on adults that were not seen in children, and grammatical gender had effects on children that were not seen in adults. Adult ratings of AoA had strong effects on both groups, but an objective measure of AoA only affected children. Adult and child reaction times were also differentially affected by semantic category (especially animal names). Results have implications for developmental and cross-linguistic studies of lexical access, in and out of context.     

不同汉字解码技能与小学生阅读理解的关系

探讨不同汉字解码技能在小学生阅读理解发展中的作用。208名二、四年级学生完成了认读准确性、流利性、声旁意识、形旁意识等汉字解码技能测验及阅读理解和言语理解测验。结果表明,汉字解码技能是阅读理解变异的重要来源。汉字认读准确性对二、四年级学生的阅读理解均有显著的独立贡献,汉字认读流利性仅对二年级学生有显著的独立贡献,声旁与形旁意识没有显著的独立贡献。结果对认识儿童阅读发展及有效促进阅读学习具有启示。     

What do children do in the rime-analogy task? An examination of the skills and strategies used by early readers

Despite the intense debate surrounding the use of orthographic analogy in the clue word paradigm, little is known about the skills and strategies children actually use and how these compare with their everyday reading of single words. This study, with 4- and 5-year-olds (N=125), supports previous work which suggests children rely on phonological, rather than orthographic, priming in the clue word task since children most frequently produced rhyming words in response to the clue word. The extent to which phoneme and rhyme-based skills, along with letter-sound knowledge, predicted children's performance in the analogy task and in a test of single word reading was contrasted and compared. Our findings suggested that the balance of skills which children drew upon was determined by the demands of the task. The implications of these findings for the validity of the 'orthographic'-analogy task and for teaching beginning readers is discussed.     

Children's early understanding of false belief

We investigated 3-year-olds' understanding of the representational capability of the mind by examining whether they would acknowledge that they had entertained a wrong belief. As in previous studies, children very often judged that they had believed a Smarties tube contained pencils when these were revealed as the true content, even though they had stated "Smarties" before the tube had been opened. Under another condition, when the tube was first presented, children mailed a picture into a postbox of what they thought was inside (Smarties). When asked "When you posted your picture, what did you think was in here (the tube)?" the great majority of children answered correctly with "Smarties". Additionally, children nearly always stated that the posted card displayed a picture of Smarties, and that the tube really contained pencils. On the traditional task, children may give the wrong answer because they are biased to make judgments about belief states on the basis of known physical reality. The posting task made it possible for children simultaneously to focus on physical reality and acknowledge false belief.     

Young Children's Knowledge of the Representational Function of Pictorial Symbols: Development Across the Preschool Years in Three Cultures

Three- to 5-year-old children's knowledge that pictures have a representational function for others was investigated using a pictorial false-belief task. In Study 1, children passed the task at around 4 years old, and performance was correlated with standard false-belief and pictorial symbol tasks. In Study 2, the performance of children from two cultural settings who had very little exposure to pictures during the first 3 years (Peru, India) was contrasted with that of children from Canada. Performance was better in the Canadian than Peruvian and Indian samples on the picture false-belief task and drawing tasks but not on the standard false-belief measure. In all settings, children passed drawing and standard false-belief tasks either concurrently with, or prior to, passing the picture false-belief task. The findings suggest that children's explicit knowledge of the representational function of pictorial symbols matures in the late preschool years and develops more rapidly in cultures that strongly promote the symbolic use of pictures early in life.     

Understanding print: early reading development and the contributions of home literacy experiences

This study explored the development of children's early understanding of visual and orthographic aspects of print and how this is related to early reading acquisition. A total of 474 children, ages 48 to 83 months, completed standardized measures of phonological awareness and early reading skills. They also completed experimental tasks that tapped their understanding of what constitutes "readable" print. The parents of participants completed a questionnaire regarding their children's home literacy experiences. The data showed systematic development in children's understanding of print conventions and English orthography and spelling. Regression analyses indicated that print knowledge was related to early reading skill, even after accounting for variance due to age and phonological awareness. Furthermore, parents' ratings of the extent of their children's involvement in activities that led to practice in reading and writing most consistently predicted the development of emerging literacy skills, including understanding of the conventions of the English writing system. Little relation between print knowledge and the frequency of storybook reading by adults was observed.     

Young children's use of scale models: testing an alternative to representational insight

Using a symbolic object such as a model as a source of information about something else requires some appreciation of the relation between the symbol and what it represents. Representational insight has been proposed as essential to success in a symbolic retrieval task in which children must use information from a hiding event in a scale model to find a toy hidden in a room. The two studies reported here examine and reject a proposed alternative account for success in the model task. The results with 2.5-year-olds and 3-year-olds show that children's successful use of a scale model cannot be attributed to the simple detection of the correspondences between the objects in the two spaces. A higher-level representation of the model-room relation (i.e. representational insight) is required. The results are discussed with respect to the coalescence of multiple factors in determining performance in the model task.     

Name–picture verification as a control measure for object naming: A task analysis and norms for a large set of pictures

The name–picture verification task is widely used in spoken production studies to control for nonlexical differences between picture sets. In this task a word is presented first and followed, after a pause, by a picture. Participants must then make a speeded decision on whether both word and picture refer to the same object. Using regression analyses, we systematically explored the characteristics of this task by assessing the independent contribution of a series of factors that have been found relevant for picture naming in previous studies. We found that, for “match” responses, both visual and conceptual factors played a role, but lexical variables were not significant contributors. No clear pattern emerged from the analysis of “no-match” responses. We interpret these results as validating the use of “match” latencies as control variables in studies or spoken production using picture naming. Norms for match and no-match responses for 396 line drawings taken from Cycowicz, Friedman, Rothstein, and Snodgrass (1997) can be downloaded at: http://language.psy.bris.ac.uk/name-picture_verification.html     

汉语图片命名中获得年龄的作用

不同语种的研究都发现获得年龄是影响图片命名和词汇命名的重要因素。该研究对汉语图片命名中获得年龄的作用进行了初步探讨。研究分为两部分,第一部分让20名大学生对187幅选自Snodgrass和Vanderwart图片集的线条画的名称的获得年龄进行了评定;第二部分以该187幅图片为刺激,30名大学生被试对图片进行命名反应。以命名反应时为因变量,采用多重回归分析,发现除了名称一致性和概念熟悉性,获得年龄是图片命名反应时的主要预测指标,并没有发现词频的效应。文章对此结果进行了讨论。