Form-Function Correspondences in Children's Inference

Perceptual similarity among concept members has been viewed as inadequate to motivate concept formation. Instead, it has been argued that intuitive beliefs about the world offer more structured motivation for concepts. Our research explores children's beliefs about the relations between perceptually based similarity among things and their predicted behaviors. We focus on form-function correspondences as fundamental components of very young children's belief systems. Groups of 2- and 4-year-old children were asked to choose which of 2 line-drawn animals evidenced a particular "function," a special behavior. Even the youngest children showed sensitivity to form-function correspondences by selecting the animal whose form afforded the particular function. A second study investigated how form-function correspondences affect the relative influences of perceptual similarity and shared labels over patterns of children's inference. Perceptual similarity, if "motivated" by intuitive beliefs about correspondences between form and function, was found to be sufficient basis for inference and a more robust basis than shared labels when children attributed meaningful functions to novel animal forms.     

Children and Adults Learn Family-Resemblance Categories Analytically

3 experiments examined the modes of processing used by children and adults in learning family-resemblance categories. The materials were cartoon faces (Experiments 1 and 2) and bugs (Experiment 3) divided into categories that possessed no single defining attributes, but rather several characteristic attributes that were each partially predictive of category membership. The categories were structured so that a holistic mode of processing in which the individual did not selectively weight any given attributes could have led to success. Nevertheless, preschoolers (Experiments 2 and 3), first and third graders (Experiment 1), and adult college students (all experiments) all exhibited primarily analytic modes of learning that consisted of single- and dual-attribute approaches. Although the proportion of analytic learners among the preschoolers was lower than among the adults in Experiment 3, in no case were holistic modes of learning evident. The results are discussed in terms of their implications for young children's apparent relative success in learning natural categories. It is suggested that children's success in learning real-world categories may be based, in part, on an interaction between a basically analytic processing style and natural category structures that provide many partially informative attributes.     

Children's attention to rigid and deformable shape in naming and non-naming tasks

In four experiments with three-year-olds (N = 67), we investigate children's understanding of the differential importance of shape for categorization of solid rigid objects with fixed shapes and solid but deformable objects with shapes that can be changed. In a non-naming task we find that young children categorize rigid and deformable things differently and know that material is important for deformable things and shape for rigid things. In two naming tasks, however, children generalize names for both solid and deformable objects by shape similarity and disregard rigidity. To understand this pattern of results we examine a corpus of early-learned nouns and the kinds of rigid and nonrigid things named by nouns in that corpus. The results suggest that names for categories of solid, rigid objects in which instances are similar in shape dominate children's early noun vocabularies. We suggest that children's novel word generalizations for deformable things may be overgeneralizations of this dominant pattern.     

The Role of Classification Skill in Moderating Environmental Influences on Children's Gender Stereotyping: A Study of the Functional Use of Gender in the Classroom

Sandra Bem has suggested that societal use of gender as a functional category increases gender stereotyping. The present study tests Bem's theory and the additional hypothesis that children's classification skill moderates environmental effects on gender stereotyping. Elementary school children ( N = 66) were given pretest measures of gender stereotyping and of classification skill and assigned to 1 of 3 types of school classrooms in which teachers made: (1) functional use of male and female groups, (2) functional use of "red" and "green" groups, or (3) no explicit groups. After 4 weeks, children completed posttest measures of gender and intergroup attitudes. As predicted, the functional use of gender categories led to increases in gender stereotyping, particularly among those children with less advanced classification skills. The functional use of color categories did not result in highly stereotypic perceptions of groups. Theoretical and educational implications are discussed.     

Category-use effects in children

Three experiments examined the changes in category representation that take place when children use exemplars for tasks other than classification. In Experiments 1 and 2, 6- and 10-year-old children learned to classify exemplars of a novel category and then used the same exemplars in an inferential prediction task. In a subsequent classification task, features that were predictive for both classification and inference were classified more accurately than features that were predictive only of category membership. Experiment 3 showed that features with multiple uses were also more likely to be retrieved in feature listing. The findings show that children's category representations are affected by the way exemplars are used after they have been categorized.     

Young children's feelings about school

This study examined factors associated with young children's feelings about school in kindergarten and first grade, using a new measure, the Feelings about School (FAS). The FAS measures children's perceptions of academic competence, their feelings about the teacher, and their general attitudes toward school. Findings provided support for the reliability and validity of the FAS for kindergartners (N = 225) and first graders (N = 127). Variables presumed to predict children's feelings about school were the classroom structure, academic performance, and relationships with teachers. Feelings about school were expected to predict academic engagement. Correlational analyses indicated that kindergartners' and first graders' feelings about school were associated with their academic skills, as measured by direct assessments and teacher ratings. The evidence for first graders was stronger than for kindergartners. Kindergartners' general attitudes toward school were more negative in highly structured, teacher-directed classroom environments. First graders' perceptions of competence were more negative in classrooms lacking structure and control. First graders', but not kindergartners', perceptions of competence were significantly associated with academic engagement.     

Beyond Beliefs: Parent and Child Behaviors and Children''s Perceived Academic Competence

Examined the relations of parent and child behaviors with children's perceptions of their academic competence. 74 high-achieving third-grade children, with varying levels of perceived academic competence, were observed working with mothers and fathers both on solvable tasks (Period 1) and during a period that included some unsolvable tasks (Period 2). Results indicated that children's perceived academic competence was positively related to father warmth, both at Period 1 and at Period 2. Children's perceived academic competence was also positively related to their own behavior when working with fathers at Period 2. Specifically, children with higher perceived academic competence showed more emotional restraint and were more self-reliant when working on tasks at Period 2 than were children with lower perceived academic competence. The results indicate that there are systematic, observable correlates of children's self-reports of their perceived academic competence.     

Learning through Feature Prediction: An Initial Investigation into Teaching Categories to Children with Autism through Predicting Missing Features

Individuals with autism have difficulty generalising information from one situation to another, a process that requires the learning of categories and concepts. Category information may be learned through: (1) classifying items into categories, or (2) predicting missing features of category items. Predicting missing features has to this point been little used in special education. Children with autism were taught novel category information through either classification or feature prediction tasks. Both methods resulted in successful category learning. Furthermore, feature prediction learning resulted in better performance when predicting missing features of items at test. These results suggest that while both tasks are valuable tools for teaching categories to children with autism, the feature prediction task provides more successful post-learning use of the information acquired.     

Establishing New Subcategories: The Role of Category Labels and Existing Knowledge

Previous research has revealed that novel nouns highlight category relations at superordinate and basic levels but, paradoxically, make subordinate classification more difficult for preschool children. In Experiment 1, we provide additional evidence that novel nouns put 3-year-old children at a disadvantage in subordinate classification. We suggest that this reflects young children's inclination to label and classify objects at the basic level. In Experiments 2 and 3, we identify 2 circumstances under which 3-year-old children alter their basic level expectation. In Experiment 2, we provide children with specific information to distinguish the relevant subclasses. In Experiment 3, we introduce the novel nouns in conjunction with the familiar basic level labels. Under each of these circumstances, novel nouns do not present an obstacle to subordinate classification. Children's linguistic biases (e.g., the noun-category bias) and their existing knowledge and vocabularies jointly influence early conceptual development.     

Origin and Truth: Young Children's Understanding of Imaginary Mental Representations

In 2 studies, we address young children's understanding of the origin and representational relations of imagination, a fictional mental state, and contrast this with their understanding of knowledge, an epistemic mental state. In the first study, 54 3- and 4-year-old children received 2 tasks to assess their understanding of origins, and 4 stories to assess their understanding of representational relations. Children of both ages understood that, whereas perception is necessary for knowledge, it is irrelevant for imagination. Results for children's understanding of representational relations revealed intriguing developmental differences. Although children understood that knowledge represents reality more truthfully than imagination, 3-year-olds often claimed that imagination reflected reality. The second study provided additional evidence that younger 3-year-olds judge that imaginary representations truthfully reflect reality. We propose that children's responses indicate an early understanding of the distinction between mental states and the world, but also a confusion regarding the extent to which mental contents represent the physical world.     

Tertiary Students' Perceptions of their Learning Environments: A New Procedure and Some Outcomes

The use of student perceptions in improving teaching and learning is briefly reviewed along with an analysis of potential limitations of procedures commonly used to gather those perceptions. An alternative procedure, the Perceptions of Learning Environments Questionnaire (PLEQ), is suggested in an attempt to overcome the limitations. 1249 students from ten schools in five faculties at the Queensland University of Technology (QUT) in Brisbane. Australia were given the opportunity, using the semi‐structured but open‐ended format of the PLEQ, to write about events that they felt helped or hindered their learning ('statements')‐ In each case, they were also asked to indicate why ('reasons'). The data were classified into 55 categories of ‘statements’ and 47 categories of ‘reasons’ where each category had a positive and negative dimension. Analysis of the students' views indicate that, for them, effective teaching is relevant, experiential and interactive while ineffective teaching lacks structure, is inappropriately paced, lacks variety and occurs in a classroom that lacks discipline. The implications of these views are examined in terms of contemporary approaches to teaching and learning.     

儿童分类发展的特点及影响因素的实验研究

用有差异的同类事物的刺激图片为实验材料,采有全部呈现刺激图片和逐一呈现刺激图片以及有无样例图片的方法,在4－9岁儿童的被试中探讨儿童分类依“相似性”向依“理论性”转变的问题及影响分类结果的因素,结果表明：儿童依“相似性”分类向依“理论性”分类的转折点是8岁,两种呈现刺激方式的对儿童的分类结果没有造成显著性差异;按目标图分类方式（有样例）的分类结果显著好于自由分类方式（无样例）的分类结果。     

The development of forward search planning in preschoolers

Previous evidence suggesting that young children have some ability to plan by means of forward search suffers from typical findings that individual performance is inconsistent and group performance is low. In the present study, evidence is sought that children's imperfect performance results from unstable execution of the correct component processes of forward search, rather than from use of flawed or incomplete rules. 4- and 5-year-olds participated in a route-planning task in which they collected items from several locations in a large space. Incorrect routes required having to backtrack to locations previously visited. Forward search in this task required 3 component processes: representing a possible route, evaluating the route for backtracking, and if necessary, repeating the procedure for an alternate route. Evidence from stochastic parameter estimation and from children's self-corrections and explanations showed that 5-year-olds engaged in forward search, but that 4-year-olds used only a rudimentary form of forward search. Developmental changes involved children's ability to foresee and avoid backtracking, to consider alternate routes, and to spontaneously self-correct errors. Results are discussed in terms of implications for our understanding of the structure and development of early problem-solving skills in general.     

Ecological correlates of children's subjective school outcomes

The study used path analytic techniques to examine relations between children's subjective school outcomes and measures of their family and school learning environments. Included in the sample were 250 twelve-year-old Australian children, 120 girls and 130 boys, and their parents. A home interview schedule was used to assess parents' aspirational, instrumental, and expressive orientations in relation to education while children's perceptions of the regulative, instructional, innovative, and interpersonal contexts of their schools were obtained. The findings indicated that when a refined measure is used, children's perceptions of their school environment have moderate to strong links with school-related outcomes even when family influences are assessed by detailed social—psychological process variables. For future research, however, the study suggests that parallel measures of children's perceptions of their family and school environments should be developed for a more complete understanding of the ecological correlates of children's characteristics.     

The Development of Category-based Induction

In a category-based induction, knowing that a property is true of some category members leads one to conclude that the property is true of other category members. An example is: Cardinals have ulnar arteries. Therefore hawks have ulnar arteries. Recently, Osherson et al. (1990) demonstrated a number of phenomena involving category-based inductions, and proposed that these phenomena can be explained by variations in 2 processes: (a) the similarity between the premise category (cardinals in the above example) and the conclusion category (hawks in the above example), and (b) the degree to which the premise category "covers" (roughly, is similar to) instances of the lowest-level category that includes both the premise and conclusion categories (birds in the above example). The present paper traces the developmental course of the relevant phenomena and of the similarity and coverage processes that presumably underlie them. Studies 1 and 2 demonstrated that the inductions made by kindergartners are sensitive only to the similarity between the premise and conclusion categories. Studies 3 and 4 showed that second graders' inductions are sensitive to both premise-conclusion similarity and coverage, as long as there is no need actually to use a generated category that includes both the premise and conclusion categories. These developmental findings reveal an orderly process in the growth of category-based inductions, and also decompose the Osherson et al. model into 3 basic components that have not previously been explicitly distinguished.     

婴幼儿基于概念的归纳推理研究

近年来,关于婴幼儿归纳推理能力的发展研究受到国际心理学界的重视,其中婴幼儿是否能够基于概念进行归纳推理是一个焦点问题。Mandler等人利用概括化模仿技术对婴儿的归纳推理进行了研究,发现:9-20个月的婴儿的归纳推理受到领域水平的概念类别所限制,是一个基于概念的过程;Gelman等人探讨了类别成员关系、语言标签、心理本质主义在幼儿的归纳推理中的作用,发现:2-4岁幼儿的归纳推理受基本水平的类别成员关系所限制,也是一个基于概念的过程。二者的分歧可以用语言的作用加以解释。     

Socioeconomic status, parental investments, and the cognitive and behavioral outcomes of low-income children from immigrant and native households

The current study examines the effects of socioeconomic status (SES) on preschool children's cognitive and behavioral outcomes and if these relations are mediated by the quality of children's home environment and moderated by family nativity status. Data come from 1459 low-income families (n = 257 and 1202 immigrant and native families, respectively). Results indicated that among both immigrant and native households, maternal education, as compared to household income or welfare receipt, was the strongest predictor of a composite of SES. Path analyses estimated direct and indirect effects of SES and revealed greater similarity than difference in the processes by which SES influences immigrant and native children's preschool outcomes. Language/literacy stimulation and maternal supportiveness mediated the relations of SES to children's cognitive outcomes among both immigrant and native families. In contrast, parenting stress mediated the effects of SES on children's aggressive behavior among native, but not immigrant, households.     

One Cow Does Not an Animal Make: Young Children Can Extend Novel Words at the Superordinate Level

Six match-to-sample picture/object selection experiments were designed to explore children's knowledge about superordinate words (e.g., "food") and how they acquire this knowledge. Three factors were found to influence the learning and extension of superordinate words in 3- to 5-year-old children (N = 230): The number of standards (one versus two), the type of standards presented (from different basic-level categories versus from the same basic-level category), and the nature of the object representations used (pictures versus objects). A different pattern of superordinate word acquisition was found between 3-year-olds and 4- and 5-year-olds. Although 4- and 5-year-olds could learn and extend novel words to superordinate categories in the presence of two picture exemplars from different categories or a single three-dimensional (3-D) exemplar, 3-year-olds could do so only in the presence of two 3-D exemplars. These findings indicate that young children's acquisition of superordinate words is influenced by multiple factors and that there is a developmental progression from multiple exemplars to single exemplars in superordinate word learning.     

The Development of a Linkage between Count Nouns and Object Categories: Evidence from Fifteen- to Twenty-One-Month-Old Infants

Recent research suggests that, although young children appreciate many different kinds of conceptual relations among objects, they focus specifically on taxonomic relations in the context of word learning. However, because the evidence for children's appreciation of this linkage between words and object categories has come primarily from children who have made substantial linguistic and conceptual advances, it offers limited information concerning the development of this linkage. In the experiments reported here, we employ a match-to-sample task to focus specifically on the development of an appreciation of the linkage between words (here, count nouns) and object categories in infants in the period just prior to and just subsequent to the naming explosion. The results demonstrate that, for 21-month-old infants, most of whom have recently entered the vocabulary explosion (Experiment 1), and for 16-month-old infants, most of whom have yet to commence the vocabulary explosion (Experiment 2), novel nouns focus attention on taxonomic relations among objects. This is important because it reveals a nascent appreciation of a linkage between words and object categories in infants who are at the very onset of language production. Results are interpreted within a developmental account of infants' emerging appreciation of a specific linkage between count nouns and object categories.     

Longitudinal study of young children's responses to challenging achievement situations

Three studies were conducted to replicate and extend Dweck's findings regarding young children's responses to challenging achievement situations. Dweck's dichotomous helplessness classification system (i.e., task choice, task choice reason) was replicated with kindergartners, n = 235 (50% male), and first graders, n = 70 (46% male). To test whether individual differences in young children's responses to challenging situations are stable over time, 1- and 5-year follow-ups of the kindergartners were conducted. On the basis of children's responses on age-appropriate behavioral tasks, a composite of cognitive, behavioral, and affective helplessness indices predicted helplessness at 1 and 5 years later, n = 114 (50% male), above and beyond kindergarten task ability and gender, p<.05. Kindergarten helplessness predicted teacher ratings of children's helplessness 5 years later as well, p<.05. The implications of these findings for early intervention are discussed.