The tragedy of the commons revisited: The importance of group decision-making

We use a laboratory experiment to compare the way groups and individuals behave in an inter-temporal common pool dilemma. The experimental design distinguishes between a non-strategic problem where players (individuals or groups of three) make decisions without interaction and a strategic part where players harvest from a common pool. This allows us to correct for differences between individuals and groups in the quality of decisions when testing for differences in competitiveness. Group decisions are either made by majority rule or unanimity. The results show that groups are less myopic than individuals (i.e., they make qualitatively better decisions) but that they are more competitive than individuals when placed in a strategic setting. The net result for groups deciding by majority rule is that they make less efficient decisions in the strategic game than individuals do. We are able to show that this is caused by the median voter departing from her original preference in early periods with a shrinking pool. When groups have to make unanimous decisions they start playing the strategic game more efficiently then individuals do, but they rapidly become more competitive with repetition of the game.     

Zur Dogmengeschichte des Begriffes einer „Umlaufsgeschwindigkeit der Güter“ und seines Verhältnisses zur Umlaufsgeschwindigkeit des Geldes

Ohne ZusammenfassungÜbersetzt von Paul Brüll, Wien.     

Gender and Performance in Accounting Examinations: Exploring the Impact of Examination Format

This paper addresses the question of whether the increasing use of multiple-choice questions will favour particular student groups, i.e. male or female students. Using data from Belgium, this paper empirically examines the existence of a gender effect by comparing the relative performance of male and female students in both multiple-choice and constructed-response questions in financial accounting examinations. The study is motivated by the increasing number of students in accounting classes, changes in the gender mix in accounting classes, and debates over appropriate means of assessment. We find that female students outperform male students in answering questions in both formats, but their superiority in multiple-choice questions is diminished in comparison with constructed-response questions. This might suggest that multiple choice questions favour male students more than female students. The results hold even if we restrict the comparison to multiple-choice and constructed-response questions having the same general content (e.g. exercise type). Furthermore, the diminishing result was found both for undergraduate and postgraduate students. These results should prompt those involved in assessment to be cautious in planning the type of assessment used in evaluating students.     

Exploratory study in tourism: designing an initial,qualitative phase of sequenced,mixed methods research

Exploratory studies in the social sciences are being increasingly advocated, particularly in relation to new research themes or when addressing an existing issue from a new perspective. Although exploration is usually the starting point, it is frequently part of a sequence of research stages. However, until recently the actual process of conducting such exploratory research within the leisure and tourism field has received little attention. This is due not just to perceptions that exploration is merely the initial step in a longer research process, but significantly, because there is a lack of guidance on how to conduct such research. This paper argues that when the overall tourism research study involves the use of mixed methods, an initial exploratory stage conducted as part of a sequential research process, requires a systematic approach to achieve a reliable platform for further investigation. The paper shows how and why a systematic research design process in the exploratory stage can enhance the value of studies, when the initial qualitative stage is to be followed by a quantitative phase. Three phases of an exploratory qualitative research design process are identified: preparation, development and refinement. Criteria for assessing the suitability of qualitative data collection techniques are proposed. It is argued that careful attention to the process of designing the initial exploratory qualitative stage constitutes the necessary condition for achieving results that will form a sound basis for the next quantitative sequence of research. Copyright © 2009 John Wiley & Sons, Ltd.     

The modelling of business profitability: A new approach

Various methods are in use for the ‘top down’ assessment and comparison of the future profitabilities of businesses. The most advanced is the PAR equation of the PIMS programme, which combines quantitative evaluations of the average effect of various business characteristics on profitability. However it is not a true model in the OR sense being essentially a linear regression equation. The proposed new approach is a first attempt to combine the characteristics in a way which models the bargaining of customers with suppliers who are in competition for the supply of a bulk product. All the constants in the resulting non-linear equation (called 5C) are meaningful in marketing or production terms. The model is in a preliminary non-optimized state, but seems to offer opportunities for ongoing development. It is in this spirit that it is offered for discussion.