Adrenocortical reactivity and social competence in seven year-olds

We examined temporal changes in salivary cortisol in response to a peer self-presentation task in a group of seven year-olds, some of whom scored high, average, and low on the Harter, 1983 Perceived Social Competence Scale. Salivary cortisol was measured pre-task, and 20 and 35 min post-task. We found a significant relation between individual differences in perceived social competence and salivary cortisol reactivity in response to the task. Children who perceived themselves as socially competent exhibited a significantly greater decrease in salivary cortisol from 20 to 35 min following the task compared with children who self-reported a relatively lower degree of social competence. We speculate on the meaning of salivary cortisol changes in childrens socio-emotional development.     

Use of a structured investigative protocol enhances young children's responses to free-recall prompts in the course of forensic interviews

One hundred alleged victims of child sexual abuse (ages 4-12 years; M = 8.1 years) were interviewed by police investigators about their alleged experiences. Half of the children were interviewed using the National Institute of Child Health and Human Development's structured interview protocol, whereas the other children--matched with respect to their age, relationship with the alleged perpetrator, and seriousness of the alleged offenses--were interviewed using standard interview practices. Protocol-guided interviews elicited more information using open-ended prompts and less information using option-posing and suggestive questions than did standard interviews; there were no age differences in the amount of information provided in response to open-ended invitations. In 89% of the protocol interviews, children made their preliminary allegations in response to open-ended prompts, compared with 36% in the standard interviews.     

Toward a unified theory of human reasoning

This article presents a unified theory of human reasoning. The goal of the theory is to specify what constitutes reasoning, as opposed to other psychological processes, and to characterize the psychological distinction between inductive and deductive reasoning. The theory views reasoning as the controlled and mediated application of three processes— selective encoding, selective comparison, and selective combination—to inferential rules. The first two of these processes are essentially inductive in nature; the third is essentially deductive. The theory describes these three processes, specifies the kinds of inferential rules and their use in several reasoning tasks, and specifies the mediators that affect how well the processes can be applied to the rules. The theory is shown to apply to a variety of reasoning tasks and is compared to other theories as well.     

In defence of high-speed memory scanning

This paper reviews some of the evidence that bears on the existence of a mental high-speed serial exhaustive scanning process (SES) used by humans to interrogate the active memory of a set of items to determine whether it contains a test item. First proposed in the 1960s, based on patterns of reaction times (RTs), numerous later studies supported, elaborated, extended, and limited the generality of SES, while critics claimed that SES never occurred, that predictions from SES were violated, and that other mechanisms produced the RT patterns that led to the idea. I show that some of these claims result from ignoring variations in experimental procedure that produce superficially similar but quantitatively different RT patterns and that, for the original procedures, the most frequently repeated claims that predictions are violated are false. I also discuss evidence against the generality of competing theories of active-memory interrogation, especially those that depend on discrimination of directly accessible “memory-strength”. Some of this evidence has been available since the 1960s but has been ignored by some proponents of alternative theories. Other evidence presented herein is derived from results of one relevant experiment described for the first time, results of another described in more detail than heretofore, and new analyses of old data. Knowledge of brain function acquired during the past half century has increased the plausibility of SES. The conclusion: SES is alive and well, but many associated puzzles merit further investigation, suggestions for which are offered.     

Asset-Based,Sustainable Local Economic Development: Using Community Participation to Improve Quality of Life Across Rural,Small-Town,and Urban Communities

Applied Research in Quality of Life - We analyze survey data from 5,487 residents of 85 Texas communities, including rural communities, small towns, medium-sized cities, and the five largest urban...     

Creativity: The individual,the systems,the approach

The theory that different ideation-evaluation (I-E) ratios are optimal for creative problem solving in different fields of endeavor in organizations is presented. Preliminary field data (n = 622), which support the theory, are reported. As predicted, higher I-E ratios were found for work classified as more problem finding in nature, such as research; lower ratios were found for work classified as more solution implementation in nature, such as manufacturing; moderate ratios in-between were found for work classified as more problem solving in nature, such as nonprofit organization administration. Implications for training and for increasing the understanding of innovation in organizations are discussed.     

Revisiting the Investment Theory of Creativity

This research further examines Sternberg and Lubart's (1995) investment theory of creativity by testing the newly constructed Multifaceted Assessment of Creativity (MAC). The MAC measures the extent to which people take into account the 6 resources for creativity (intelligence, knowledge, intellectual styles, personality, motivation, and environment) when they evaluate (a) hypothetical cases and (b) the importance of the six resources for identifying creativity. Two forms of the MAC (one assessing school boys and the other assessing school girls) were administered to 270 (120 male and 150 female) Chinese university students. Overall, results strongly supported the investment theory of creativity. Meanwhile, the 2 types of evaluation tasks yielded diverse results centered on the importance of intelligence and of styles. Furthermore, differential expectations were expressed for boys versus girls regarding what counts in creativity.     

Whence Creativity?

In this article, I explicate where my theoretical work on creativity has been and where it is going. I describe earlier three‐facet and investment theories, as well as a propulsion model. I then describe my new triangular theory of creativity.     

Components of syllogistic reasoning

The present research sought to understand the components of syllogistic reasoning used in a syllogistic evaluation task. In this task, subjects must indicate whether a conclusion such as “Some Yale professors are humbugs” is definitely true, or never true of a set of premises such as “Some humbugs study syllogistic reasoning; some Yale professors study syllogistic reasoning”. A modified form of componential analysis (Sternberg 1977, 1978) was used to decompose the syllogistic evaluation task with abstract content into encoding and encoding plus combination subtasks. The response-choice data from these subtasks were used to provide (a) direct tests of a proposed theory of syllogistic reasoning, and in particular, of its assumptions about sources of error in syllogistic reasoning; and (b) direct inferences regarding the representation of relations between the subject and predicate of the premises as encoded and combined. The results supported a proposed transitive-chain model of syllogistic reasoning.