Determination of sex from juvenile crania by means of discriminant function analysis

This study provides evidence of craniofacial growth variation between the sexes in juveniles of European descent. Data were collected from lateral cephalometric radiographs belonging to the Michigan Craniofacial Growth Study. The collection consists of longitudinal lateral radiographs that represent individuals 5-16 years of age. Each radiograph was manually traced on hyprint vellum from which eight craniometric points were identified. From these points, 20 craniofacial measurements were recorded and then analyzed by means of a canonical discriminant function analysis. Sex classification equations were then created by applying a backward stepwise procedure to the discriminant functions. The analysis demonstrates the presence of sexually dimorphic differences in craniofacial growth. The neurocranium is the most sexually dimorphic region of the juvenile craniofacial skeleton, until the onset of puberty. Size is the main source of variation with males having taller and longer heads than females. Overall, sex classification in the sample ranges from 78 to 89% accuracy.     

Vote Buying and Social Desirability Bias: Experimental Evidence from Nicaragua

Qualitative studies of vote buying find the practice to be common in many Latin American countries, but quantitative studies using surveys find little evidence of vote buying. Social desirability bias can account for this discrepancy. We employ a survey‐based list experiment to minimize the problem. After the 2008 Nicaraguan municipal elections, we asked about vote‐buying behavior by campaigns using a list experiment and the questions traditionally used by studies of vote buying on a nationally representative survey. Our list experiment estimated that 24% of registered voters in Nicaragua were offered a gift or service in exchange for votes, whereas only 2% reported the behavior when asked directly. This detected social desirability bias is nonrandom and analysis based on traditional obtrusive measures of vote buying is unreliable. We also provide systematic evidence that shows the importance of monitoring strategies by parties in determining who is targeted for vote buying.     

The feasibility of a desirable minimal state

Dwight Lee (1989) argues on utilitarian grounds that the minimal state of classical liberalism cannot be both desirable and feasible: if desirable, it is not attainable; if attainable, it is not desirable. Lee's article provides an intriguing new perspective on the long debate about the optimal size of government. His conclusions, however, do not hold if some of his restrictive assumptions are relaxed. In a more general model, the minimal state can be both desirable and feasible.     

Child-to-Parent Violence in Adolescents: The Perspectives of the Parents,Children, and Professionals in a Sample of Spanish Focus Group Participants

This study explored the characteristics of child-to-parent violence (CPV) in Spain based on the narrations of adolescents who perpetrate this kind of violence, their parents, and the professionals who work in this area. A qualitative design was used. Focus groups were asked about the risk factors associated with CPV, such as exposure to family violence, discipline, and psychological characteristics of the adolescents. Interviews were videotaped, transcribed, and reviewed independently by each investigator to identify and group distinct comments into categories with specific themes. Results suggest that CPV is mainly linked to exposure to marital conflict and family violence, permissive discipline, emotional disengagement in the father-child relationship, and symptoms of emotional stress and substance consumption in the children. Lastly, acts of CPV seem to be an attempt by the children to gain power in the context of family relations in which the parents display their incapacity to establish control. As several family and personal characteristics appear to be involved in CPV, it is recommended that family and individual approaches be considered for treatment.     

Does Observance of Religious Holidays Affect Agricultural Productivity and Household Welfare? Evidence from Rural Ethiopia

This study examines whether traditional customs affect household's welfare by taking the case of the work prohibition related with religion in rural Ethiopia. Although the anecdotal evidence suggests that work prohibition by the Ethiopian Orthodox Church, to observe the religious holidays, is one of the reasons for the high poverty incidence in Ethiopia, the estimation results do not show that there is a significant effect of the number of religious holidays observed on agricultural productivity and household welfare. Observance of religious holidays affects crop choice and income source.