Trust has been one of the most discussed topics in research ondecision-making processes in organizations since early 1990s. the notion ofdistrust, however, has been rarely investigated. Authors of this text analyzeexisting literature looking for possible conceptualizations of both trust anddistrust and they highlight possible sources of this imbalance in the debate. They also argue, basing on some empirical research, that distrust should be positioned as an autonomous research problem and that its dominant concept - as a mirrorimage of trust – should be finally questioned.

In the paper we present an introduction to the theory of judgment aggregation and discuss its relation to the theory of preference aggregation. We compare the formal model of judgment aggregation, based on logic, with the formal model of preference aggregation. Finally, we present a theorem in judgmentaggregation which is an exact analogue of Arrow's theorem for strict preferences.

Enrolment is a complex process. There is a number of games that can be distinguished and analysed: universities and faculties compete for applicants, applicants compete to become students, etc. The purpose of this paper was to analyse process of applicants' decision-making. In the first part of this article a model of applicants' decision-making strategies is described. In the second part consequences of applicants' strategic behaviour are examined. According to the presented model secondary school graduates with lower final exams results should avoid choosing the most popular faculties. To determine if self-selection of applicants can be observed data collected at University ofWarsaw during 2010 enrolment was used.