Analyzing Stimulus-Stimulus Pairing Effects on Preferences for Speech Sounds

Several studies have demonstrated effects of stimulus-stimulus pairing (SSP) on children's vocalizations, but numerous treatment failures have also been reported. The present study attempted to isolate procedural variables related to failures of SSP to condition speech sounds as reinforcers. Three boys diagnosed with autism-spectrum disorders participated. Phase 1 was designed to assess SSP effects on production of auditory stimuli via button pressing. When SSP failed to produce a preference for the target stimulus, we instituted a series of procedural manipulations intended to address potential reasons for failure. One participant preferred the target stimulus when given the opportunity to select preferred items for pairing prior to each session, but a subsequent reversal attempt produced ambiguous results. Two participants showed no consistent preference in Phase 1 and underwent a within-session reinforcer evaluation in Phase 2, in which alternative controlling variables were demonstrated by delivering preferred stimuli contingent on button pressing.     

Labour Market Policies in Times of Crisis: A Reaction Function Approach for the Period 1985–2010

This article examines the reaction function of labour market expenditure to unemployment in 24 OECD countries, over the period 1985–2010, using the OECD panel data. The level of public debt is also introduced as a factor that is likely to influence these expenditures. Using a fixed‐effect model with interaction terms, this research focuses on two periods of crisis (1992–93 and 2007–09). The results confirm the counter‐cyclical variation of labour market policy expenditures. Nevertheless, the sensitivity of labour market expenditure to the economic cycle has in general decreased and the policy mix has changed. This could result from the important labour market reforms undertaken in the last 20 years.     

Constructions of a Lynching

This paper examines the effects of white violence as carried out against a subordinate black community in a small southern town during 1900. The aftermath, as perceived by present-day residents, and the emergent constructions of the event are explored. It is suggested that the present reality constructions of blacks and whites continue to reflect the significance these historical events have had for group meanings and intergroup relations.     

Financing of college education by single-parent and two-parent families

The financing of college education by male and female single-parent families and two-parent families is compared. Female single parents are at a significant disadvantage in being able to accumulate funds, but this is partially offset by financial aid. Variables accounting for significant variation in the parents' contribution to student education expenses are: public versus private school, financial aid, parents' saving behavior, students' contribution, race, and family type. The amount of parental contribution is positively correlated with parent net worth, family per capita income, and total student cost; it is negatively correlated with age of the student.This study utilized data from the National Postsecondary Education Student Aid Study prepared for the National Center for Education Statistics, U. S. Department of Education, by Westat, Inc. Partial support for the research was supplied by the College of Human Ecology and the Computer Science Center of the University of Maryland. The author expresses her appreciation to the Editor and Reviewers for their valuable suggestions.Her research interests include personal finance, family resource management, and personal factors affecting the handling of money. She is a graduate of Berea College, Berea, KY, and received both the M. Ed. and Ed. D. from The Pennsylvania State University.     

Causes of Civil War in Asia and Sub‐Saharan Africa: A Comparison*

Objectives. This article explores the extent to which economic development, ethnic and religious fractionalization, domestic governance, and international trade openness affect civil war in postcolonial Asia and Sub‐Saharan Africa (SSA) from 1950 through 1992. Methods. We estimate a set of multivariate logit models with the generalized estimating equation (GEE) method for time‐series cross‐sectional (TSCS) data. Results. Both in Asia and in SSA, civil war is less likely with increased economic development and trade openness, while mixed autocratic‐democratic regimes raise the likelihood that states will experience civil war. Although neither ethnic nor religious fractionalization has any statistically significant effect on civil war in SSA, civil war in Asia is more likely with greater ethnic fractionalization. Conclusions. Despite cross‐regional variation in causes of civil war, economic development and trade openness seem to play a consistent role in reducing civil war.     

Speaker abstracts

Purpose: There is no consensus on possible benefits and risks of testosterone supplementation. Here we review various controlled studies of testosterone supplementation in aging males.

Methods: We performed a PubMed search using the terms “testosterone/therapeutic use” with the limits “>65 years of age”, “randomized controlled clinical trials”, and “male gender”, starting in 1999.

Results: Forty-three articles have been published since 1999. Some of these studies also included patients in middle-age or younger. Findings reported in these articles were not entirely consistent. After weighting studies by the number of patients, hints are found that testosterone supplementation increases bone mass, lean body mass, muscle mass and hematopoiesis, and improves sexual functioning and perhaps mood, but does not affect serum lipids, cardiovascular parameters, prostate-specific antigen level, or cognition. Considering studies including only men older than 65 years, and in which testosterone supplements were compared with placebo treatment, slightly different results are obtained. In these patient groups, testosterone does not improve sexual function or mood.

Conclusion: The overall benefit of testosterone supplementation for the aging male remains unclear. Any supplementation in men with age-normal testosterone levels only on grounds of subjective symptoms is not advisable.     

A 1,408 km bicycle tour with prostate cancer patients—results of a pilot study

Negative psychological and physical effects of prostate cancer and its medical treatment may persist many years after diagnosis. The influence of a long cycling tour on rehabilitative or health-related effects with prostate cancer patients has not yet been studied. In practice, physicians and therapists rarely recommend cycling to prostate cancer. In May 2010, eight prostate cancer patients rode their bikes for over 1,408 km from Cologne to Marseille within 5 weeks. Endurance test, blood examinations (prostate-specific antigen (PSA), total testosterone, interleukin-6, oxidative stress, and antioxidant capacity) and quality of life questionnaires were completed before and after the tour. All eight subjects reached Marseille. Significant improvements could be observed in physical performance and certain quality of life scores (p?=?0.008), as well as a reduction of total testosterone (p?=?0.19). PSA levels did not change. This pilot study suggests that long bicycle tours with prostate cancer patients are feasible. Due to the missing control group and the small sample size, the results of this pilot study are limited.     

Reflexive habits: dating and rationalized conduct in New York and Berlin

This paper builds on the work of Norbert Elias to examine how conduct varies across cultural contexts. We compare courtship practices in New York and Berlin and ask how people act during the course of ‘getting together’ with a sexual or romantic partner. Drawing on interviews in both contexts, we find that conduct associated with the practice of ‘dating’ among New York respondents is more rationalized as indicated by a greater awareness of timing, a greater degree of intentionality and planning and a greater tendency to psychologize self and others. Berlin respondents report observations of themselves and others in less detail and tend to describe themselves as passive objects of the impersonal forces of love. Whereas conduct associated with dating is more reflexive in some ways, these forms of reflexive conduct are not themselves fully conscious or the object of reflection but have in turn become taken for granted and habitual. These findings challenge us to conceptualize habitus in a manner that does not reproduce the opposition between habit and reflexivity but allows us to use the concept as a tool to capture variations in how self‐monitoring and habit are combined in modes of conduct.