On probabilistic parametric inference

This paper formulates a theory of probabilistic parametric inference and explores the limits of its applicability. Unlike Bayesian statistical models, the system does not comprise prior probability distributions. Objectivity is imposed on the theory: a particular direct probability density should always result in the same posterior probability distribution. For calibrated posterior probability distributions it is possible to construct credible regions with posterior-probability content equal to the coverage of the regions, but the calibration is not generally preserved under marginalization. As an application of the theory, the paper also constructs a filter for linear Gauss–Markov stochastic processes with unspecified initial conditions.     

Learning discrete decomposable graphical models via constraint optimization

Statistical model learning problems are traditionally solved using either heuristic greedy optimization or stochastic simulation, such as Markov chain Monte Carlo or simulated annealing. Recently, there has been an increasing interest in the use of combinatorial search methods, including those based on computational logic. Some of these methods are particularly attractive since they can also be successful in proving the global optimality of solutions, in contrast to stochastic algorithms that only guarantee optimality at the limit. Here we improve and generalize a recently introduced constraint-based method for learning undirected graphical models. The new method combines perfect elimination orderings with various strategies for solution pruning and offers a dramatic improvement both in terms of time and memory complexity. We also show that the method is capable of efficiently handling a more general class of models, called stratified/labeled graphical models, which have an astronomically larger model space.     

Disconnected Lives: Trends in Time Spent Alone in Finland

Discussions about social isolation have been extensive over the past few decades. A less sociable nature of social ties has been identified in Western societies. The phenomenon has been associated with demographic changes such as aging and living alone as well as changes in the use of new technologies. In this study we employ representative Finnish Time Use Surveys from three decades, 1987–1988 (n?=?1887), 1999–2000 (n?=?2673) and 2009–2010 (n?=?1887) to examine the trends in social isolation, measured as time spent alone. Our results showed that between 1987 and 2010 the time spent alone increased by 124 min per day. The increase was linear and occurred in nearly all population groups. Structural factors, such as aging and an increase in the number of single households, are strongly associated with increased time spent alone. Time spent alone has increased, especially during leisure activities. Specifically, time spent watching television and using computers is associated with the decreasing tendency for face-to-face interaction.

     

The gender gap in teenagers’ incomes. A 30-year trend in Finland 1983–2013

In this article, we examine the gender differences in disposable incomes of teenagers during a 30-year period 1983–2013, using large nationally representative survey data. Since the gender pay gap in working life has been rather persistent in Finland and the EU, it was necessary to see whether the gap persists in teenagers’ incomes as well. Although teenagers do not receive much income from work, they adapt to the structures of society during their teenage years and learn gender roles in consumption, education, and working life. Our results reveal that the gender pay gap has been rather persistent in Finland, particularly among 14- and 16-year-old teenagers. It is only among 18-year-olds that the gender difference in income has narrowed. There were interactions between gender and socio-economic indicators such as the father's education and family's place of residence. The persistent gender pay gap cannot be explained solely by wage differences in any age group, because full-time work of teenagers is nowadays very rare, and in Finland they do not work very much even part-time. Although it is rather obvious that boys get higher incomes than girls from external work, the allocation of money by parents seems to be unequal, too.     

Is Graduate Social Work Education Promoting a Critical Approach to Mental Health Practice?

A sample of 71 psychopathology course syllabi from 58 different graduate schools of social work was analyzed to determine whether different viewpoints and the concomitant empirical evidence were presented regarding 4 significant mental health topics: concepts of mental disorder, reliability and validity of psychiatric diagnoses, biological etiology, and drug treatment. There is little evidence that graduate psychopathology courses cover viewpoints other than the most conventional and institutional—that of biomedical psychiatry. A small handful of secondary (textbooks) rather than primary (research articles) sources provide the majority of the mental health content in these courses. Implications are discussed. The article includes an overview of both the relevant conventional and critical literature.     

Academic writing as autocommunication – the case of doctoral dissertations on CSR

In this article, we explore the self‐oriented rather than socially‐oriented reasons why a doctoral dissertation in the field of corporate social responsibility (CSR) is written. We base our article on Yuri M. Lotman’s idea on autocommunication which we use as tool in analysing a group interview conducted with six doctoral students studying in the field of CSR. We suggest that autocommunicational aspects might play a much more important role in rationalized Western culture and science than is often realized, and our main thesis is that one essential reason for writing a doctoral dissertation in the field of CSR might be to communicate with oneself and that this even might contain a therapeutic dimension. Implications for students, supervisors and future research are discussed at the end of the article.     

Cultural and peer influences on homicidal violence: a Finnish perspective

Two case examples of school shootings in Finland illustrate the interplay between the distal, international influence of the Columbine shooting and the more immediate impact of local peer interactions involving both peer bullying at school and peer encouragement of violence through the Internet. Both cases involved emotionally troubled young men who identified with the Columbine attackers and aspired to attain notoriety through similar acts of violence. There was a sequence of missed opportunities for prevention in these shootings that occurred when the student was chronically bullied, developed serious emotional problems, became fascinated with Columbine-type events, and subsequently began to discuss interests and plans to commit a similar act.