When Tarzan asks Jane "Do you like my friends?" and Jane answers "Some of them," her underinformative reply implicates "Not all of them." This "scalar inference" arises when a less-than-maximally informative utterance implies the denial of a more informative proposition. Default Inference accounts (e.g.,…

D. Trafimow presented an analysis of null hypothesis significance testing (NHST) using Bayes's theorem. Among other points, he concluded that NHST is logically invalid, but that logically valid Bayesian analyses are often not possible. The latter conclusion reflects a fundamental misunderstanding of the nature of Bayesian inference. This view…

This paper comments on the response offered by Trafimow on Lee and Wagenmakers comments on Trafimow's original article. It seems our comment should have made it clear that the objective Bayesian approach we advocate views probabilities neither as relative frequencies nor as belief states, but as degrees of plausibility assigned to propositions in…

This paper comments on the articles by Cheng and by Novick and Cheng. It has been claimed that the power PC theory reconciles regularity and power theories of causal judgment by showing how contingency information is used for inferences about unobservable causal powers. Under the causal powers theory causal relations are understood as generative…

Children tend to infer that when a speaker uses a new label, the label refers to an unlabeled object rather than one they already know the label for. Does this inference reflect a default assumption that words are mutually exclusive? Or does it instead reflect the result of a pragmatic reasoning process about what the speaker intended? In two…

Mobile Learning, or M-learning as it is often called, is a relatively new tool in the pedagogical arsenal to assist students and teachers as they navigate the options available in the expanding distance learning world. This article assesses some of the possible methods, challenges and future potential of using this approach in a college classroom…

Xu and von Davier (2006) demonstrated the feasibility of using the general diagnostic model (GDM) to analyze National Assessment of Educational Progress (NAEP) proficiency data. Their work showed that the GDM analysis not only led to conclusions for gender and race groups similar to those published in the NAEP Report Card, but also allowed…

Based on literature and research on discussion and on educational techniques to improve discussion moderators behaviors, a training program was developed for pre- and in-service teacher educators, business and industry executives and university professors (23 to 28 hours, three and a half days). This program was tested for its effectiveness with…

A dramatic shift in research priorities has recently produced a large number of ambitious randomized trials in K-12 education. In most cases, the aim is to improve student academic learning by improving classroom instruction. Embedded in these studies are theories about how the quality of classroom must improve if these interventions are to…

Students can imitate scientists at work by conducting inquiry investigations in the classroom, thereby exhibiting a multitude of skills and competencies. As stated by Bransford and Donovan (2005), learning science as a process of inquiry involves students in observation, imagination, and reasoning about the phenomena under investigation. Rather…

This article highlights the problem of omitted variable bias in research on the causal effect of financial aid on college-going. I first describe the problem of self-selection and the resulting bias from omitted variables. I then assess and explore the strengths and weaknesses of random assignment, multivariate regression, proxy variables, fixed…

Objective: Two studies examined whether accessibility of hostility-related schema influenced ratings of ambiguous child pictures. Based on the social information processing model of child physical abuse (CPA), it was expected that CPA risk status would serve as a proxy for chronic accessibility of hostile schema, while priming procedures were used…

In a well-designed experiment, random assignment of participants to treatments makes causal inference straightforward. However, if participants are not randomized (as in observational study, quasi-experiment, or nonequivalent control-group designs), group comparisons may be biased by confounders that influence both the outcome and the alleged…

Students' interpretations of their academic writing tasks has been a central concern in the cognitive-based writing research due to the prominent role such decision-making plays in determining students' subsequent thinking and composing strategies and ultimately in shaping their textual quality. Without a comprehensive understanding of how L2…

Talk is the foundation for thought and understanding and the key to literacy learning. Research demonstrates that powerful metacognitive strategies can be taught to help students self-monitor their comprehension when reading print and digital texts. This article provides a repertoire of speaking and listening strategies to develop the…