On the relationship between cognitive abilities and life-course-persistent offending among a sample of African Americans: A longitudinal test of Moffitt's hypothesis

Prior criminological research showed that cognitive abilities were related to delinquent and criminal activity, primarily within adolescent samples. Moffitt's developmental taxonomy anticipates that cognitive abilities will relate to criminal activity differently throughout the population of offenders, mattering more for life-course-persistent than adolescence-limited offenders. Unfortunately, prior research had not examined in great detail the long-term influence of cognitive abilities on criminal activity from birth to adulthood nor had research explored this issue within an African American sample. In this study, data from the Philadelphia portion of the National Collaborative Perinatal Project (NCPP) were used to examine the long-term effect of cognitive abilities on criminal activity from birth to adulthood.     

On assessing the mood of the public toward the police: Some conceptual issues

The use of attitudinal surveys has become a widely accepted method for the incorporation of public opinion in public policy decisions. Because of the assumption that the interpretation of such surveys is straightforward and clear, little critical attention has been devoted to the methodological and theoretical problems encountered when translating these findings into public policy. A case in point involves the proliferation of surveys aimed at assessing the mood of the public toward the police. A review of the literature reveals that the research findings about the public mood are contradictory and thus lack convergent validity. The findings of this study indicate that this lack of convergent validity in the images of the public toward the police can be explained on both methodological and theoretical grounds. More specifically, the findings indicate that the mood of the public is very different depending on the level of specificity of the items used to tap that mood. Items eliciting evaluations of a general nature show the public as supportive of the police, while items of a specific nature show much less public support. This apparent paradox is explained through the use of a theoretical framework developed by Easton (1965), which emphasizes diffuse and specific support as external influences on institutions.