We focus on the problem of ignoring statistical independence. A binomial experiment is used to determine whether judges could match, based on looks alone, dogs to their owners. The experimental design introduces dependencies such that the probability of a given judge correctly matching a dog and an owner changes from trial to trial. We show how…

The current investigation examined the form and magnitude of the relationship between political skill and two intrapersonal worker reactions--job satisfaction and job tension. Political skill was hypothesized to demonstrate an inverted U-shaped nonlinear relationship with job satisfaction and a U-shaped relationship with job tension. Data from…

In this study we investigated how alcohol consumption affects women's responses to unwanted sexual advances in a hypothetical dating situation. Sixty female social drinkers participated in a 2 times 2 between-subjects experiment, which examined the effects of moderate alcohol intoxication and relationship characteristics on behavioral responses to…

In this theoretical article, we take an exercise to be a collection of procedural questions or tasks. It can be useful to treat such an exercise as a single object, with individual questions seen as elements in a mathematically and pedagogically structured set. We use the notions of dimensions of possible variation and range of permissible change,…

This research examines the effect of achievement goals on performance attainment and the moderating role of performance contingencies. Results from 3 experiments strongly support the authors' hypotheses. Performance-avoidance goals undermined performance relative to performance-approach and mastery goals, regardless of contingency condition.…

This study extended research on prejudice against lesbian and gay (LG) persons by examining theoretically grounded links between intrapersonal and interpersonal manifestations of such prejudice. On the basis of G. A. Kelly's (1955/1991a, 1955/1991b) conceptualization of threat, the authors operationalized intrapersonal homophobia, or LG threat, as…

This paper comments on the response offered by Cheng and Novick to Luhmann and Ahn's initial comments on Cheng's and Cheng and Novick's previous articles. Cheng and Novick argue that people's willingness to generalize across contexts contradicts our hypothesis. They argue that previous studies demonstrate that participants generalize their…

While studies of cerebellar involvement in learning and memory have described plasticity within the cerebellum, its role in acquisition of plasticity elsewhere in the CNS is largely unexplored. This study set out to determine whether the cerebellum is needed for acquisition of the spinal cord plasticity that underlies operantly conditioned…

The study explored early syntactic development, and tested the hypothesis that children use similarity of meaning in order to move beyond the learning of individual item-based multiword constructions. The first 6 types of verb-object (VO) constructions in Hebrew-speaking children were analysed for the occurrence of transfer of learning and…

The purpose of this tutorial is threefold: (a) review the state of statistical science regarding effect-sizes, (b) illustrate the importance of effect-sizes for interpreting findings in all forms of research and particularly for results of clinical-outcome research, and (c) demonstrate just how easily a criterion on reporting effect-sizes in…

Histories of the environmental movement have emphasized the importance of a shift in focus from those issues traditionally associated with the movement, such as resource and wildlife protection, towards "new" quality of life issues, such as environmental pollution and its human health effects. Here, time-series data between 1970 and 2000…

A generally-educated individual should have some insight into how decisions are made in the very wide range of fields that employ statistical and probabilistic reasoning. Also, students of introductory probability and statistics are often best motivated by specific applications rather than by theory and mathematical development, because most…

An introduction to hypothesis testing using a mathematician's claim that his dog knows calculus and can intuit a minimum path.

The authors present a method that ensures control over the Type I error rate for those who visually analyze the data from response-guided multiple-baseline designs. The method can be seen as a modification of visual analysis methods to incorporate a mechanism to control Type I errors or as a modification of randomization test methods to allow…

The authors present a comprehensive consideration of the process characteristics of visual search in contexts that vary in their meaningfulness. The authors frame hypotheses regarding process architecture, stopping rule, capacity, and channel independence, using analytic results and a rigorously specified dynamic system to characterize a set of…