The effectiveness of treatment for sexual offenders: A comprehensive meta-analysis

The article reports a meta-analysis on controlled outcome evaluations of sexual offender treatment. From 2,039 documents published in five languages, 69 studies containing 80 independent comparisons between treated and untreated offenders fulfilled stepwise eligibility criteria (total N = 22,181). Despite a wide range of positive and negative effect sizes, the majority confirmed the benefits of treatment. Treated offenders showed 6 percentage points or 37% less sexual recidivism than controls. Effects for violent and general recidivism were in a similar range. Organic treatments (surgical castration and hormonal medication) showed larger effects than psychosocial interventions. However, this difference was partially confounded with methodological and offender variables. Among psychological programs, cognitive–behavioral approaches revealed the most robust effect. Nonbehavioral treatments did not demonstrate a significant impact. There was no outcome difference between randomized and other designs, however, group equivalence was associated with slightly larger effects. Various other moderators had a stronger impact on effect size (e.g., small sample size, quality of outcome reporting, program completion vs. dropout, age homogeneity, outpatient treatment, and authors’ affiliation with the program). More differentiated, high-quality evaluations are needed to clarify: What works for whom under which circumstances?     

Local autonomy, tax morale, and the shadow economy

Policymakers often propose strict enforcement strategies to fight the shadow economy and to increase tax morale. However, there is an alternative bottom-up approach that decentralises political power to those who are close to the problems. This paper analyses the relationship with local autonomy. We use data on tax morale at the individual level and macro data on the size of the shadow economy to analyse the relevance of local autonomy and compliance in Switzerland. The findings suggest that there is a positive (negative) relationship between local autonomy and tax morale (size of the shadow economy).     

Corruption and the shadow economy: an empirical analysis

This paper analyzes the influence of the shadow economy on corruption and vice versa. We hypothesize that corruption and the shadow economy are substitutes in high income countries while they are complements in low income countries. The hypotheses are tested for a cross-section of 98 countries. Our results show that there is no robust relationship between corruption and the size of the shadow economy when perceptions-based indices of corruption are used. Employing an index of corruption based on a structural model, however, corruption and the shadow economy are complements in countries with low income, but not in high income countries.     

Who’s afraid of an EU tax and why?—revenue system preferences in the European Parliament

The current revenue system of the EU is still structured like that of an organization based on intergovernmental cooperation, although the EU is already far advanced in legislative and political integration. This antagonism gives reason to discuss whether or not the EU should be granted an autonomous tax source. Our contribution to this debate explores the factors which shape the acceptance of the EU tax option among European policy makers. A self-conducted survey among Members of the European Parliament (MEPs), which resulted in a response of some 150 of the representatives, offers us a unique database. Concerning MEPs’ revenue system preferences, our findings confirm an important impact of party ideology and individual characteristics while they indicate that country-specific factors also contribute to understand the attitudes towards an EU tax. In the light of our findings the status quo bias in the revenue system of the EU can be attributed to the persistent importance of national interests with respect to tax policy.

An extreme case of undoing and posing in a case of murder-suicide. A forensic pathological approach to crime scene investigation

A 7-year-old boy was killed by his father by manual strangulation during a murder-suicide. After the killing of the son, the father showed typical "undoing" behaviour: He changed the boy's clothes and laid him down on the bed. Then he placed candles around his head, put pictures of the parents' wedding around him and a crucifix and a picture of the family into his hands. He broke off a rose in a vase next to the bed, lit the candles and took photographs of his dead son. Later he called his wife, threatened to kill the son and finally called the police to confess the murder and to announce his forthcoming suicide.     

Eruption times of permanent teeth in male children and adolescents of Tehran (Iran)

The eruption times of permanent teeth and the sequence of tooth eruption were investigated in 952 individuals aged 4 to 24 years. Wisdom teeth were excluded from the evaluation. All individuals were inhabitants of Tehran, Iran. The results were compared to results of international studies on tooth eruption of the 20th century and studies published in recent years. The teeth emerged symmetrically in each jaw. However, teeth erupted earlier in the mandible than in the maxilla, excluding the earlier eruption of maxillary premolars. The sequence of emerging teeth in the maxilla is: first molar, central incisor, lateral incisor, first premolar, second premolar, canine, and second molar. The sequence of tooth eruption of the mandible differs from the maxillary sequence: first molar, central incisor, lateral incisor, canine, first premolar, second premolar, second molar. The sequence of all teeth is: lower first molar, lower central incisor, upper first molar, upper central incisor, lower lateral incisor, upper lateral incisor, upper first premolar, lower canine, lower first premolar, upper second premolar, upper canine, lower second premolar, lower second molar, and upper second molar. The results support current theories that the differences in tooth eruption times between humans of different ethnic origin are small.