A follow-up power analysis of the statistical tests used in the Journal of Research in Science Teaching

It has been two decades since the first power analysis of a psychological journal and 10 years since the Journal of Research in Science Teaching made its contribution to this debate. One purpose of this article is to investigate what power-related changes, if any, have occurred in science education research over the past decade as a result of the earlier survey. In addition, previous recommendations are expanded and expounded upon within the context of more recent work in this area. The absence of any consistent mode of presenting statistical results, as well as little change with regard to power-related issues are reported. Guidelines for reporting the minimal amount of information demanded for clear and independent evaluation of research results by readers are also proposed.     

The 2008 Presidential Election, 2.0: A Content Analysis of User-Generated Political Facebook Groups

Although Facebook is primarily known for building and maintaining relationships, the 2008 presidential election highlighted this social networking website as a viable tool for political communication. In fact, during primary season until Election Day in 2008, Facebook users created more than 1,000 Facebook group pages that focused on Barack Obama and John McCain. Using quantitative content analysis, the primary purpose of this study was to assess how both John McCain and Barack Obama were portrayed across these Facebook groups. Results indicated that group membership and activity levels were higher for Barack Obama than for John McCain. Overall, Barack Obama was portrayed more positively across Facebook groups than John McCain. In addition, profanity, racial, religious, and age-related language were also coded for and varied with regard to how each candidate was portrayed. Theoretical and practical implications are discussed.     

Revisiting the Fantasy–Reality Distinction: Children as Naïve Skeptics

Far from being the uncritical believers young children have been portrayed as, children often exhibit skepticism toward the reality status of novel entities and events. This article reviews research on children's reality status judgments, testimony use, understanding of possibility, and religious cognition. When viewed from this new perspective it becomes apparent that when assessing reality status, children are as likely to doubt as they are to believe. It is suggested that immature metacognitive abilities are at the root of children's skepticism, specifically that an insufficient ability to evaluate the scope and relevance of one's knowledge leads to an overreliance on it in evaluating reality status. With development comes increasing ability to utilize a wider range of sources to inform reality status judgments.     

Where Theories of Mind Meet Magic: The Development of Children's Beliefs about Wishing

In two studies, we probed children's beliefs about wishing. In Study 1, we gathered initial data on 50 3- to 6-year-old children's concepts of wishing and beliefs about its efficacy, with both a semistructured interview and a variety of tasks. Results revealed considerable knowledge about wishing in young children, along with an age-related decrease in beliefs about its efficacy. Parents were not found to encourage differently the beliefs of children at different ages, nor were they found to begin actively discouraging such beliefs at any particular age. A moderate relation was found between environmental supports for wishing and children's beliefs in its efficacy. In Study 2, we continued to probe these issues and also address the nature of the broader conceptual context in which children situate their beliefs about wishing. Participants were 92 3- to 6-year-old children. Results of this study suggest that children may reconcile beliefs in the efficacy of wishing with knowledge about everyday mental-physical relations by situating these beliefs more within their emerging beliefs about magic than within their theories of mind.     

Young Children's Understanding of Fictional versus Epistemic Mental Representations: Imagination and Belief

In 2 studies, 3- and 4-year-old children's ability to reason about the relation between mental representations and reality was examined. In the first study, children received parallel false belief and "false" imagination tasks. Results revealed that children performed better on imagination tasks than on belief tasks. The second study demonstrated that, when various alternative explanations for better performance on the imagination task were controlled for, children still performed significantly better when reasoning about another person's imagination than when reasoning about another person's belief. These findings suggest that children's understanding that mental representations can differ from reality may emerge first with respect to representations that do not purport to represent reality truthfully.     

The Development and Evaluation of Procedures to Assess Child Self-report Item Validity

Cognitive pretesting (CP) is an interview methodology for pretesting the validity of items during the development of self-report instruments. The present research evaluates a systematic approach to the analysis of CP data. Materials and procedures were developed to rate self-report item performance with CP interview text data. Five raters were trained in the application of that system. Estimates of inter-rater reliability found acceptable to substantial levels of inter-rater agreement. Results from the present study suggest that excellent inter-rater reliability can be achieved in the evaluation of CP data. Guidelines for systematically rating the qualitative data collected using CP methods are provided. Future research should focus on empirical demonstrations of how such rating procedures can lead to improvements in self-report instruments.     

Children’s Use of Testimony to Determine Reality Status

Verbal testimony about reality status is critical but often contradictory. These studies address whom children consider reliable sources of information about reality and how they evaluate conflicting testimony. In Study 1, seventy 4- to 8-year-olds heard an adult or child provide testimony about how to cook food and use toys, and about the reality of unfamiliar entities. Children selected the adult for food and the child for toys. Six- and 8-year-olds also selected the adult regarding reality. In Study 2, ninety 4- to 8-year-olds heard conflicting reality information from children and adults. Six- to 8-year-olds endorsed adult and child claims differentially and stated that adults knew more. By age 6, children favor adult testimony about reality over that of children.