Contrary to duties (CTD) are dealt with in the framework of standard deontic logic (SDL), and ordinary Kripke possible world models. Given a world t, one associates statically a non-empty set I(t) of ideal worlds for t and t Oq (q is obligatory for t) if q holds in all the worlds of I(t). This is a static perception of obligation. If we have to list as t the set of all obligations for the world...

Reversal is the current stylized fact of weekly returns. To the contrary, we find a robust and dominant momentum in one-week returns. The brief reversal that follows extreme weekly returns is itself followed by an opposing stream of continuation in returns. These subsequent momentum profits are strong enough to offset the initial reversal and to produce a significant momentum effect over the fu...

This study describes undergraduate casual-leisure information behaviors relevant to online videos. Diaries and in-depth interviews were used to collect data. Twenty-four undergraduates participated in this study (9 men, 15 women; all were aged 18–22 years). This study presents a model of casual-leisure information behaviors and contributes new insights into user experience in casual-leisure set...

Most young adults have had some casual sex experience. However, it is important to understand the motivations for such behavior because of potential health consequences. We investigate the motivations for and consequences of casual sex using a life course lens. We use the Toledo Adolescent Relationship Study to examine a diverse sample of young adults with recent casual sex experiences (N=210)....

Many people do not get the recommended 30 minutes of exercise per day, which can result in health problems such as obesity, muscle atrophy and chronic disease. Based on the principles of casual games and exergames, we propose and define casual exergames for motivating people to exercise in multiple small chunks of time throughout the day. We designed, implemented, and tested a casual exergame c...

Economists have for long expressed dissatisfaction with the complex models of strict rationality that are so pervasive in economic theory. There are several objections to such models. First~ casual empiricism or even just simple introspection lead to the conclusion that even in quite simple decision problems, most economic agents are not in fact maximizers, in the sense that they do not scan th...