Author: Editor


Leadership is about making people perform better, making people better, and, making better people, at the same time

– Alexander Pelaez, from Ammunition: Essentials of Leadership

The Impact of IT-Enabled Coordination on Group Performance in an Electronic Group Buying Market

Authors:Karl R. Lang,Baruch College, City University of New York, USA,
Martin Yuecheng YuSchool of Information Systems, Singapore Management University, Singapore
Alexander PelaezBaruch College, City University of New York, USA,

Abstract This article presents an evaluation approach for alternative electronic market designs and examines the impact of introducing an IT-enabled innovation (a social communication tool to support group coordination) in an online group-buying market in terms of group decision-making and economic performance. Drawing on theory from economics, decision theory, and information systems, we present a competitive arousal model for a social buying setting that posits that introducing competitive arousal among buyers reduces buyer profits and that social facilitation can mitigate these costs through better task completion and time to completion rates. Using an economic experiment, we found that rivalry has a negative effect on buyer profits but also that pressure increases the efficiency of social communication in terms of group formation. We discuss the implications of these results.

Citation:Lang, K. R., Yu, M. Y., & Pelaez, A. (2014). The Impact of IT-Enabled Coordination on Group Performance in an Electronic Group-Buying Market. In PACIS (p. 209).

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Ammunition: Essentials of Leadership

I wrote this book as a complement to management material found in a number of business schools. I was inspired by the book called The Goal by Eliyahu Goldratt, from my days as an MBA student. Using fiction to teach concepts taught in business school, I think, are very effective. My aim with the book was to collect stories from a number of people I have experienced in my career and weave them into a single character. The books demonstrates key aspects of management and leadership and as the story evolves, so does the character, in the same way every good manager/leader does in their occupation.

Note to instructors in colleges there is an accompanying instructors guide for use with the books. It contains questions and case material for discussion. Contact me @ for more information. 



Ammunition: Essentials of Leadership demonstrates the qualities of great leadership through the eyes of a young Information Technology Manager, Ryan Sheridan, who believes in the glory and laurels of leadership, but discovers it to be a challenging role whose benefits are intangible and infinitely rewarding. He struggles with issues of micromanagement, petty jealousies and the pressures of corporate politics as they impede his career ambitions. However, Ryan, using his experience and knowledge, creates a strategy and employs tactics skillfully, enabling him to overcome operational challenges and personal tragedy. Through the use of a story, the reader experiences the effect of Ryan’s decisions, which can help aspiring and seasoned leaders understand the key qualities of leadership.


The book can be ordered from Amazon: Ammunition: Essentials of Leadership