Delay discounting of different outcomes: Review and theory

Steep delay discounting is characterized by a preference for small immediate outcomes relative to larger delayed outcomes and is predictive of drug abuse, risky sexual behaviors, and other maladaptive behaviors. Nancy M. Petry was a pioneer in delay discounting research who demonstrated that people discount delayed monetary gains less steeply than they discount substances with abuse liability. Subsequent research found steep discounting for not only drugs, but other nonmonetary outcomes such as food, sex, and health. In this systematic review, we evaluate the hypotheses proposed to explain differences in discounting as a function of the type of outcome and explore the trait- and state-like nature of delay discounting. We found overwhelming evidence for the state-like quality of delay discounting: Consistent with Petry and others' work, nonmonetary outcomes are discounted more steeply than monetary outcomes. We propose two hypotheses that together may account for this effect: Decreasing Future Preference and Decreasing Future Worth. We also found clear evidence that delay discounting has trait-like qualities: People who steeply discount monetary outcomes steeply discount nonmonetary outcomes as well. The implication is that changing delay discounting for one outcome could change discounting for other outcomes.     

LETTING REALITY BECOME REAL: On Mystery and Reality in Dietrich Bonhoeffer's Ethics

In Dietrich Bonhoeffer's Ethics the notion of reality plays a central role. The present article focuses on the ethical implications of the Chalcedonian Christology underlying this concept. This approach is tied to the debate on the relationship between the universal and specific identity of Christian social ethics in public discourse. In the opening section the article outlines the pertinence of this debate with regard to Bonhoeffer's Christological ethic. In the following section the article analyzes Bonhoeffer's concept of reality and the implied Chalcedonian traits. With this foundation established the article raises the question about its social ethical implications. The final part of the article argues that Bonhoeffer's ethics and ecclesiology cannot be separated from each other, explaining why Bonhoeffer's notion of reality leads to an assertion of the church's role in letting reality become real. In the light of Bonhoeffer's notion of reality the last section argues for the reconciliation of Christian witness and participation in public discourse.