Welfare gains from optimization in dynamic planning models

This paper compares the results of two multisectoral models used to plan the dynamic consistency of sectoral investment. Solution of an optimizing model forecasts a frontier of the economy's future choice set. This frontier represents a ten year welfare gain only 2 or 3 percent greater than any investment program simulated by a dynamic Leontief system. The paper explains what efficient behavior accounts for the “better” performance of the optimizing model. Developing dynamic programming models is costly in terms of data, computational complexity, man-machine interaction, and solution interpretation. Therefore, it is recommended that the lessons derived by working with the dynamic LP be applied to improve the planner's control of the less expensive input/output simulation model.     

The impact of divorce and subsequent father absence on children's and adolescents' self-concepts

The self-concepts of 406 grade school and junior high school students were assessed in this study. It was found that children and adolescents who had experienced father loss through divorce and whose mothers hadnot remarried demonstrated significantly lower self-concepts than those who were from intact families. Interestingly, children and adolescents who had experienced father loss through divorce and whose mothers had remarried were found to possess lower self-concepts than those from intact families, but this difference was not statistically significant. These findings were found across grade levels (i.e., grades 3–8) and for both sexes. The importance of these findings are discussed in light of current trends toward an increasing divorce rate and an increasing presence of stepfathers in American families.Recieved his Ph.D. from the University of Illinois in 1972. Research has been varied, ranging from assessment and amelioration of emotional and social problems in children to the impact of father loss on children and adolescents.Currently serving in the U.S. Navy. He has pursued graduate studies at Kansas State University. Primary research interests have been in the assessment of inter- and intrapersonal attitudes of children.     

An Analysis of the Effects of Subjective and Objective Instruction Forms on Mock-Juries' Murder/Manslaughter Distinctions

Defendants' emotions at the time of their crimes may potentially serve as mitigating circumstances in murder/manslaughter cases. The present study examined whether differences between two forms of instructions given juries in such cases affected mock-juries' murder/manslaughter distinctions. Jurors' reasons for their verdicts and definitions of murder and manslaughter were also compared. In addition, three factors found to be predictive of murder/manslaughter distinctions in previous research were evaluated. It was found that, though instruction forms affected jurors' stated reasons for their verdicts and their definitions of murder and manslaughter, they did not significantly affect murder/manslaughter distinctions. Defendants were most likely to be convicted of murder if they had a history of violence with the victim and dwelt upon their emotions. We suggest jurors likely construe instructions given them to fit their a priori understandings of murder, manslaughter, and the potentially mitigating role of defendants' emotions.