Pyramid Power: Searching for an Error in Test Scoring with 830,000 Helpers

A mathematics question that was asked on the Preliminary Scholastic Aptitude Test was scored incorrectly. This subsequently was discovered and became the subject of national attention. In this article we examine the data generated by this item from almost 830,000 examinees and find that detailed statistical analysis with even this enormous sample size would not have yielded clues to the blunder. The epistemological and practical consequences of this are also discussed.     

Engaging undergraduate social work students in research through experience-based learning

Social work programmes internationally have taken diverse approaches to research training in their curricula. This paper presents an Australian case study of engaging undergraduate social work students in research using experience-based learning. The case study explores the potential of experience-based learning to assist in overcoming the ‘anxiety’, students are observed to report in relation to research training and education. The social work programme at the University of Newcastle, Australia has embraced an experience-based learning model since 1991. Despite a research active and engaged staff and a commitment to research-informed pedagogy, educators continue to observe students as indifferent and reluctant to engage in research training. To address this, work-integrated learning was strengthened in the research course to enable students to design, develop and deliver practice-relevant research in partnership with local support services. Preliminary evaluation of the course highlights both potential and the pitfalls of experience-based learning approaches to research training. While found to enhance research engagement and demystify its role in practice, experience-based learning was associated with significant resource and time imposts. These findings suggest cautious consideration of structure and scope is essential for experience-based learning to be a feasible approach to research training at the undergraduate level.     

Trends in Gambling Studies Research: Quantifying, Categorizing, and Describing Citations

As opportunities to gamble have increased during the 20th century, so has gambling research. This study used new strategies, methods, and technology to examine citation trends and the growth of knowledge in the field of gambling studies. The sample included 2,246 citations that were published between 1903 and 2003. By using multiple keywords to classify each citation into distinct topic areas, this study yielded a more comprehensive analysis than was previously available. The results reveal that gambling-related research has grown at an exponential rate. The most prevalent topics explored within gambling studies citations have been pathology, risk-taking, decision-making and addiction. Between 1999 and 2003, studies addressing epidemiology, drug abuse, comorbidity and neuroscience have become increasingly prevalent. Based on these trends and their implications, this paper provides several recommendations for both future areas of inquiry within the field of gambling studies and better classification techniques for citations within all fields of psychology.     

The Proxy Effect: Gender and Gambling Problem Trajectories of Iowa Gambling Treatment Program Participants

Recent research has found that men and women who end up in gambling treatment tend to follow different trajectories to that endpoint: women generally begin gambling later in life, but progress to problems and seek treatment more quickly. With women’s prevalence rates of gambling and disordered gambling increasing, it has become important to identify the causes and consequences of these trajectory differences. The current study used a sample of 2,256 gamblers enrolled in the Iowa Gambling Treatment Program to examine the relationship of gender and other demographic, economic and health-related (i.e., psychosocial) factors to empirically-identified gambling problem trajectories. The results indicated that gender made a statistically significant contribution to the prediction of trajectory, but increased predictive accuracy by only 1–2% beyond a model with psychosocial predictors. Gender’s contribution was limited to its relationship to age of initiation; men and women’s problem progression did not differ meaningfully once age of gambling initiation was taken into account. Gender is a unique contributor to the development of gambling problems among treatment seekers, but it is only one small part of the myriad psychosocial characteristics that influence gambling problem development.

Comparing Iraq to Vietnam: Recognition, Recall, and the Nature of Cohort Effects

Cross-section samples in five states were asked in December2004 and July 2005 whether the Iraq war is more like the VietnamWar or more like World War II. The Vietnam analogy was chosendisproportionately by those who were alive during that war,though the choice was not limited to exposure to the Vietnamperiod during what have been called the "critical years" ofadolescence and early adulthood. The distinction between twoforms of remembering, recall and recognition, helps situatethe results with regard to past research on cohort effects oncollective memory. Evidence is also presented against interpretingthe present effect as related to the biological and social correlatesof aging. Other results are included on the relations of analogychoice to partisan identification, gender, education, race,and region.     

Emerging dragonfly diversity at small Rhode Island (U.S.A.) wetlands along an urbanization gradient

Natal habitat use by dragonflies was assessed on an urban to rural land-use gradient at a set of 21 wetlands, during two emergence seasons (2004, 2005). The wetlands were characterized for urbanization level by using the first factor from a principal components analysis combining chloride concentration in the wetland and percent forest in the surrounding buffer zone. Measurements of species diversity and its components (species richness and evenness) were analyzed and compared along the urbanization gradient, as were distributions of individual species. Dragonfly diversity, species richness, and evenness did not change along the urbanization gradient, so urban wetlands served as natal habitat for numerous dragonfly species. However, several individual species displayed strong relationships to the degree of urbanization, and most were more commonly found at urban sites and at sites with fish. In contrast, relatively rare species were generally found at the rural end of the gradient. These results suggest that urban wetlands can play important roles as dragonfly habitat and in dragonfly conservation efforts, but that conservation of rural wetlands is also important for some dragonfly species.