Orientation tuning of shapefrom shading

Four experiments were performed to assess the effect of different orientations and direction of lighting on the visual processing of shaded or bipartite disks. In the first two experiments, observers were presented with nine different shading orientations from 0° to 180°. Targets were detected in a rapid and parallel fashion for shaded disks when the orientation of the shading gradient was not horizontal (90°) or oriented at 67.5°. Search asymmetries favoring the detection of “pock” targets over “ball” targets were found for all orientations. The search rates for bipartite disks were similar to the shaded disks at 0°, 22.5°, and 90° but not for intermediate orientations, and no search asymmetries were found. These differences suggest that shaded displays and bipartite displays are processed by different underlying mechanisms. The third experiment showed that the direction of the light source (left or right) had no influence on search asymmetries around the 90° point. Shading gradient orientation affected magnitude estimates of depth in the fourth experiment. These experiments show that the visual system’s “as-sumption” of overhead lighting is broadly tuned.     

A cross-cultural study of rape

Rape is often considered a crime and, as such. is subject to punishment. This paper reports a test of a “deterence theory” of rape with a cross-cultural study which uses a sample of societies drawn from the Human Relations Area Files. Fraternal interest group theory is also tested. This theory argues that the presence of fraternal interest groups, power groups of related males, predicts the occurrence of rape in a society. Although the results support both theories, a composite theory, using both deterrence and fraternal interest group theories, was found to provide a better explanation for the occurrence of rape than either theory alone.     

THE HISTORICAL CONNECTION BETWEEN THE GOLDEN RULE AND THE SECOND GREATEST LOVE COMMAND

The golden rule, perhaps the most recognizable moral maxim in Western culture, is an inadequate basis for morality. In light of its flaws as a precept and its apparent lack of moral content, it is initially perplexing that the historic Judeo‐Christian tradition has often linked the golden rule with the second greatest command to love one's neighbor as oneself. However, after examining the presuppositions behind this link and investigating the biblical context of these sayings, it is clear that the Judeo‐Christian tradition is justified in making this connection. Although the golden rule and the love command should not be conflated and their distinctions should not be abandoned, the biblical intention of the golden rule can only be understood and properly practiced in connection with the love command.     

How Often Does Deliberate Self‐Harm Occur Relative to Each Suicide? A Study of Variations by Gender and Age

Deliberate self‐harm (DSH; i.e., nonfatal self‐poisoning or self‐injury) occurs much more frequently than suicide, yet there has been little detailed investigation of the comparative rates of DSH and suicide. We conducted a study of how rates of DSH relate to suicide rates across the life cycle by gender and by method of estimation of DSH rates, using 10 years of data from a local system for monitoring DSH presentations to a general hospital and national and local suicide statistics. The rate‐ratio of DSH to suicide was 36 (95% CI 34.9–37.1) based on annual person‐based rates of DSH episodes and was nearly five times higher in females (87.9; 95% CI 84.4–91.6) than in males (18.7; 95% CI 17.9–19.6). The ratio varied markedly across the life cycle, decreasing from more than 200 in teenagers to less than 10 in persons aged 60 years and over. The difference in the ratio between females and males also decreased over the life cycle. There were very similar findings when local suicide rates were used. These patterns were replicated when the data were analyzed, first, on the basis of all episodes of DSH during the study period, but with expectedly larger DSH:suicide ratios (e.g., overall 52.7; 95% CI 51.4–54.1), and second, on the basis of individual persons only engaging in DSH during the study period, but with smaller ratios (e.g., overall 26.2; 95% CI 25.4–27.2). The DSH:suicide rate ratios for those with high and low suicidal intent were similar within age groups except for those aged 60 years and over, in whom there was a greater proportion of high intent acts. These findings illustrate how the nature of self‐harming behavior may vary in intention across the life cycle and between the genders, and provide a basis for further comparative work of this kind.     

On small world statistics

Thesmall-world problem revolves around the tracing of a line of acquaintances linking any two persons chosen at random. This paper discusses the statistical analysis of data arising out of two experimental studies of the small-world problem. The estimation of parameters in two previously proposed models is discussed, and the goodness-of-fit of these models is considered.     

Love and Privacy

How much privacy must be sacrificed by the partners in a romantic relationship? I begin by showing that we are obligated to reveal to our lovers information about ourselves that we believe could possibly cause them to withdraw their affections from us. If we were to conceal this information, then the lover would be mistaken about whom they loved, yet continue to respect obligations towards, and make sacrifices for, us. I conclude, though, by discussing some problems with both the intelligibility of this obligation and our ability to fulfil it. These problems arise from epistemological and metaphysical problems connected with the notion of a self.