Damned if You Do,Damned if You Don’t: The Stigma of Weight Loss Surgery

Willpower, as demonstrated through diet and exercise, is constructed as the only acceptable strategy for losing weight. While weight loss surgery (WLS) is an option for morbidly obese individuals, like obesity itself, WLS carries stigma. Using a 40-item survey, we measured 101 participants’ experiences with WLS stigma. We examined whether WLS is stigmatizing, how that stigma is perceived by patients, and tendencies to hide their surgery status in order to manage stigma. Results indicated evidence of perceived stigma despite support from significant others as well as a tendency to hide surgery status from some people as a stigma management technique.     

Ecological Design-Based Research for Computer Science Education: Affordances and Effectivities for Elementary School Students

Abstract

This article integrates an ecological approach and design-based research in computer science education research by following the simultaneous development of a computer programming environment and curriculum for elementary school age children over 2-1/2 years. We studied the alignment of the affordances provided by the programming environment and curriculum with the effectivities of students in 4th through 6th grade (9-12 years old). We used the computer science concept of initializing as a tracer idea and both qualitative and quantitative data to identify mismatches between the affordances provided by our programming environment and the learners’ effectivities. These included requisite mathematical skills, confusion between resetting and setting up, and incorrectly assuming that features of the programming environment conveyed information. We then describe how we addressed the mismatches by removing or adding functionality to the programming environment, adding signifiers, adapting the curriculum to include scaffolding related to the effectivities, or removing activities.     

Long-term effects of religious upbringing

Abstract

The impact of religious experiences on development is often ignored in therapeutic settings. This study examines the effects of rigidity and fear in religious upbringings and of current religious status on conformity to parental expectations, guilt, aversion to religious artifacts, family strife, independence and irrational beliefs. Questionnaires were designed to measure these effects and were completed by 129 adult men and women. Regression analyses revealed that high histories of fear, high current religiosity and older age were predictive of guilt; high current religiosity predicted conformity to parental wishes; high histories of fear and low current religiosity predicted aversion to religious artifacts; and high histories of rigidity were predictive of family strife. Histories of religious rigidity and fear were differentially associated with disaffiliation from parental religions. Family strife was also associated with similarity of beliefs between subjects and their parents. Subjects over 30 years of age were more likely to report higher histories of fear and to be affiliated with their parents’ religion. Subjects under 30 years of age reported higher histories of rigidity. Results support the importance of considering religion, including religious history, as a cultural variable in research and practice.     

Limited‐information goodness‐of‐fit testing of hierarchical item factor models

In applications of item response theory, assessment of model fit is a critical issue. Recently, limited‐information goodness‐of‐fit testing has received increased attention in the psychometrics literature. In contrast to full‐information test statistics such as Pearson’s X² or the likelihood ratio G², these limited‐information tests utilize lower‐order marginal tables rather than the full contingency table. A notable example is Maydeu‐Olivares and colleagues’M₂ family of statistics based on univariate and bivariate margins. When the contingency table is sparse, tests based on M₂ retain better Type I error rate control than the full‐information tests and can be more powerful. While in principle the M₂ statistic can be extended to test hierarchical multidimensional item factor models (e.g., bifactor and testlet models), the computation is non‐trivial. To obtain M₂, a researcher often has to obtain (many thousands of) marginal probabilities, derivatives, and weights. Each of these must be approximated with high‐dimensional numerical integration. We propose a dimension reduction method that can take advantage of the hierarchical factor structure so that the integrals can be approximated far more efficiently. We also propose a new test statistic that can be substantially better calibrated and more powerful than the original M₂ statistic when the test is long and the items are polytomous. We use simulations to demonstrate the performance of our new methods and illustrate their effectiveness with applications to real data.     

Determining the Temporal Limits of a Visual Sample for Visual Regulation

The author examined the minimum amount of time needed for vision to increase aiming accuracy and decrease movement duration. Participants selected when they would receive a visual sample during aiming movements by pressing a switch held with the left hand. The sample was one of the following durations: 40 ms, 30 ms, 20 ms, 10 ms, or 0 ms (no vision). Decreased accuracy in the no-vision condition compared to the vision conditions was observed when the duration of the impending sample was unknown (Experiment 1). Samples 40 ms in duration were sufficient to decrease endpoint variability when the duration of the sample was known before the movement (Experiment 2). These results indicate that short visual samples can be used to decrease movement time and increase accuracy and that knowledge of the impending visual context can impact the individual's subsequent behavior.     

Freely Chosen Index Finger Tapping Frequency Is Increased in Repeated Bouts of Tapping

Healthy individuals (n = 40) performed index finger tapping at freely chosen frequency during repeated bouts and before and after near-maximal muscle action consisting of 3 intense flexions of the index finger metacarpal phalangeal joint. One experiment showed, unexpectedly, that a bout of tapping increased the tapping frequency in the subsequent bout. Thus, a cumulating increase of 8.2 ± 5.4% (p < .001) occurred across 4 bouts, which were all separated by 10 min rest periods. Follow-up experiments revealed that tapping frequency was still increased in consecutive bouts when rest periods were extended to 20 min. Besides, near-maximal muscle activation, followed by 5 min rest, did not affect the tapping frequency. In conclusion, freely chosen tapping frequency was increased in repeated bouts of tapping, which were separated by 10–20 min rest periods. The observed phenomenon is suggested to be termed repeated bout rate enhancement.     

Measuring Postural Sway in Sitting: A New Segmental Approach

Global measures of trunk sway are traditionally used even though the trunk comprises a multiple number of segments. The authors’ aim was to measure the seated sway of typically developing children using a multisegment approach. Twenty typically developing children divided into 2 groups, older and younger than 10 years old, participated in this study. The children sat unsupported for 30 s while their posture and sway were quantified using stereophotogrammetry. The tendency in both age groups was to sit with a backward tilted pelvis and a kyphotic trunk. The sitting position was most varied in the younger group. Marker sway amplitude and velocity in sitting were age dependent, with reduced sway amplitude and velocity with increased age for all segments. Anteroposterior intersegmental angular sway was not age dependent. The difference in marker sway in the anteroposterior direction for the younger group appeared to result from an equally stable trunk supported on a less stable pelvis. Mediolateral marker sway and intersegmental angular sway showed a clearer age dependency. Trunk postural control does not appear to differ between children older and younger than 10 years old, but sagittal plane pelvic stability can explain the increased sway reported in younger children.     

Between a Rock and a Hard Place: Mental Causation and the Mind-Body Problem

Marx may be taken to hold that productive forces (e.g. the steam engine) explain productive relations (e.g. capitalism) more than the other way on, and that productive relations explain superstructures (e.g. the legal system) more than the other way on. There are no satisfactory standard causal understandings of these claims about explanatory primacy. That is, no standard causal understanding saves Marx from the traditional objection that relations very greatly affect forces, and superstructures very greatly affect relations. One satisfactorily articulated attempt to save Marx has been the attempt to understand the claims teleologically. Three such understandings can be distinguished, but they do not work. The first fails since it attempts to explain events by way of abstract objects. The second fails since it attempts to explain a thing by means of that thing. The third fails for a related reason. Each understanding also fails for another reason as fundamental. So‐called teleological explanations are in fact claims that standard causal explanations exist, which relevant explanations conflict with the ruling idea of Marx's philosophy, that history is somehow independent of men's consciousness and wills. There may be no evidence that Marx himself intended historical materialism to be understood teleologically. There may be evidence against.     

A Qualitative Study of Community–University Partnerships That Support Psychosocial Occupational Therapy

Community partner voices are important to understand because they provide the contexts in which occupational therapy (OT) students research community-identified needs and together, create evidence-based occupation-focused programs while developing clinical reasoning skills in a natural context. The purpose of this study is to understand how community partners experienced partnerships that support community-based research in psychosocial settings. This retrospective study explores the perspectives of community partners that hosted OT students for two-semester service-learning project over 3 years. Findings revealed partners value effective communication with faculty and students, spending time observing, listening, and developing meaningful relationships with clients and staff.