The child's social network: Sex differences from three to six years

The social networks of 85 young children as they make the transition from a home-centered to a more school-centered existence is examined using longitudinal data. When the children were three and six years of age, their mothers completed a questionnaire of network structure; at six years both the child and mother independently reported the friends that the child would invite to a birthday party. The effects of age and sex of child on the number and daily contact with peers, adults, kin, nonkin, males, and females were found. As expected, as children reached formal school age they had increased contact with peers and decreased contact with kin, while adult contact remained fairly consistent over the three- to six-year age period. Sex differences were also apparent. As predicted, children as early as 3 years, and to an even greater extent at six years, showed more same-sex compared to opposite-sex peer contact. At six years both children and mothers reported more same- as compared to opposite-sex friends who would be invited by the child to a birthday party. The findings suggest how children's social networks, as shaped by their parents and themselves, provide a framework within which experience and interaction is structured to fit cultural norms.     

Flexible and fast: Linguistic shortcut affects both shallow and deep conceptual processing

Previous research has shown that people use linguistic distributional information during conceptual processing, and that it is especially useful for shallow tasks and rapid responding. Using two conceptual combination tasks, we showed that this linguistic shortcut extends to the processing of novel stimuli, is used in both successful and unsuccessful conceptual processing, and is evident in both shallow and deep conceptual tasks. Specifically, as predicted by the ECCo theory of conceptual combination, people use the linguistic shortcut as a “quick-and-dirty” guide to whether the concepts are likely to combine into a coherent conceptual representation, in both shallow sensibility judgment and deep interpretation generation tasks. Linguistic distributional frequency predicts both the likelihood and the time course of rejecting a novel word compound as nonsensical or uninterpretable. However, it predicts the time course of successful processing only in shallow sensibility judgment, because the deeper conceptual process of interpretation generation does not allow the linguistic shortcut to suffice. Furthermore, the effects of linguistic distributional frequency are independent of any effects of conventional word frequency. We discuss the utility of the linguistic shortcut as a cognitive triage mechanism that can optimize processing in a limited-resource conceptual system.     

Personality development: an introduction toward process approaches to long-term stability and change in persons

This special issue is concerned with the systematic transformation of persons and personalities as they move through their lives. The focus is on developmental processes early in the life course that influence both long-term stability and change. Contributors represent diverse topics and viewpoints, but offer new data on classical issues of personality, including trait structure, self-regulation and internalization, self-evaluation, and self-efficacy. In addition, the issue includes empirical contributions on newer approaches to bullying, developmental processes in psychopathology, the influence of racial and ethnic discrimination on subsequent adjustment, and cultural influences on personality development. The issue also includes a special contribution addressing methodological and statistical advances in dealing with prospective longitudinal data assessing personality over time.     

The development of conceptual categories of attention during the elementary school years

The purpose of this study was to explore the development of children's conceptual understanding of attention by focusing on their awareness of various subtypes of attention. Adults, fifth graders (mean age = 11.16 years), and third graders (9.16 years) participated in a Similarity Judgment task in which they rated the similarity of pairs of cognitive scenarios involving various attentional processes. These similarity judgments were submitted to an extended similarity tree analysis (EXTREE; J. E. Corter & A. Tversky, 1986) and the interpretations of the clusters and features that emerged were confirmed by participants in an Attribute Rating task. Three changes were found with increasing age: (1) Less emphasis was placed on the surface features of the scenarios, (2) more attentional subtypes were identified, and (3) more emphasis was placed on the role of effort in attention. We conclude that during elementary school and beyond children came to understand that intentional, effortful cognitive processes can mediate between the external world and our conscious experiences of it.     

Domain specificity in conceptual development: neuropsychological evidence from autism.

To understand some aspects of conceptual development it is necessary to take cognitive architecture into account. For this purpose, the study of normal development is often not sufficient. Fortunately, one can also study neurodevelopmental disorders. For example, autistic children have severe difficulties developing certain kinds of concepts but not others. We find that whereas autistic children perform very poorly on tests of the concept, believes, they are at or near ceiling on comparable tasks that test understanding of pictorial representation. A similar pattern was found in a second study which looked at understanding of a false map or diagram: normal 4-year-olds showed a marked advantage in understanding a false belief over a false map, while the autistic subjects performed better on the map. These findings suggest that the concept, believes, develops as a domain-specific notion that is not equatable with "having a picture (map or diagram) in the head." This result supports the existence of a specialized cognitive mechanism, which subserves the development of folk psychological notions, and which is dissociably damaged in autism. We extend these ideas to outline a new model of the development of false belief performance.     

Semantic components and conceptual development

Several phenomena in the acquisition of word meanings may be accounted for by a theory of component-by-component acquisition, a mechanism analogous to that proposed for phonological development. By defining a concept as an habitual plan, and a component as a subplan, we may extend this theory to acquisition of concepts in general. This theory may be applied to logical concepts, physical reasoning and moral reasoning as well as verbal concepts. The ideas of component-by-component acquisition and of transfer of learning between concepts sharing components thus provide an alternative to developmental stage theories.     

Self-esteem development from age 14 to 30 years: a longitudinal study

We examined the development of self-esteem in adolescence and young adulthood. Data came from the Young Adults section of the National Longitudinal Survey of Youth, which includes 8 assessments across a 14-year period of a national probability sample of 7,100 individuals age 14 to 30 years. Latent growth curve analyses indicated that self-esteem increases during adolescence and continues to increase more slowly in young adulthood. Women and men did not differ in their self-esteem trajectories. In adolescence, Hispanics had lower self-esteem than Blacks and Whites, but the self-esteem of Hispanics subsequently increased more strongly, so that at age 30 Blacks and Hispanics had higher self-esteem than Whites. At each age, emotionally stable, extraverted, and conscientious individuals experienced higher self-esteem than emotionally unstable, introverted, and less conscientious individuals. Moreover, at each age, high sense of mastery, low risk taking, and better health predicted higher self-esteem. Finally, the results suggest that normative increase in sense of mastery accounts for a large proportion of the normative increase in self-esteem.     

The development of interpretations for novel noun-noun conceptual combinations during the early school years

This research investigates issues surrounding early school children's use of the similarity between head and modifier terms in deriving interpretations for novel noun-noun conceptual combinations. In these experiments, 6- and 9-year-olds and adults were asked to formulate interpretations of similar and dissimilar conceptual combinations. Both children and adults were sensitive to the similarity aspect of conceptual combinations, although the children had some difficulty with the property interpretations that high-similarity combinations require. Next, we examined 40 popular children's books for the presence of noun-noun conceptual combinations. Adult participants provided interpretations for these combinations and rated the similarity of the head and modifier nouns. Results indicated that there were few high-similarity combinations and few combinations requiring property interpretations, suggesting that children have limited exposure to highly similar combinations and property interpretations. Further analysis of children's interpretations indicates that they may have difficulty in selecting and integrating properties of the modifier onto the head, a process required by property interpretations.     

Beyond mental health: an evolutionary analysis of development under risky and supportive environmental conditions: an introduction to the special section

Evolutionary approaches to behavior have increasingly captured the attention and imagination of academics and laypeople alike. One part of this trend has been the increasing influence of evolutionary theory in developmental science. The articles in this special section of Developmental Psychology attempt to demonstrate why an evolutionary analysis is needed to more fully understand the contexts and contingencies of development. The 3 theoretical articles articulate the core evolutionary logic underlying conditional adaptation (and maladaptation) to both stressful and supportive environmental conditions over development. These theoretical articles are then followed by 9 empirical articles that test these evolutionary-developmental theories and hypotheses. Finally, 6 commentaries evaluate the prospects, pitfalls, and implications of this body of work.     

Linguistic and conceptual influences on adjective acquisition in 24- and 36-month-olds

Two hundred forty English-speaking toddlers (24- and 36-month-olds) heard novel adjectives applied to familiar objects (Experiment 1) and novel objects (Experiment 2). Children were successful in mapping adjectives to target properties only when information provided by the noun, in conjunction with participants' knowledge of the objects, provided coherent category information: when basic-level nouns or superordinate-level nouns were used with familiar objects, when novel basic-level nouns were used with novel objects, and--for 36-month-olds--when the nouns were underspecified with respect to category (thing or one) but participants could nonetheless infer a category from pragmatic and conceptual knowledge. These results provide evidence concerning how nouns influence adjective learning, and they support the notion that toddlers consider pragmatic factors when learning new words.