When people forecast, they often use analogies but in an unstructured manner. We propose a structured judgmental procedure that involves asking experts to list as many analogies as they can, rate how similar the analogies are to the target situation, and match the outcomes of the analogies with...

In important conflicts, people typically rely on experts' judgments to predict the decisions that adversaries will make. We compared the accuracy of 106 expert and 169 novice forecasts for eight real conflicts. The forecasts of experts using unaided judgment were little better than those of...

In 2007, the Intergovernmental Panel on Climate Change’s Working Group One, a panel of experts established by the World Meteorological Organization and the United Nations Environment Programme, issued its Fourth Assessment Report. The Report included predictions of dramatic increases in...

Competitor-oriented objectives, such as market-share targets, are promoted by academics and are common in business. A 1996 review of the evidence indicated that this violation of economic theory led to reduced profitability. We summarize the evidence as of 1996 then describe evidence from 12 new...

We looked at evidence from comparative empirical studies to identify methods that can be useful for predicting demand in various situations and to warn against methods that should not be used. In general, use structured methods and avoid intuition, unstructured meetings, focus groups, and data...

No one came closer to predicting the outcome of the 2004 U. S. presidential election than the team at politicalforecasting.com, also called pollyvote.com. They tell us how they did it and whether they think they can do it again. Copyright International Institute of Forecasters, 2005

Scott and Alfred describe Allan Lichtman's Keys Model as an example of an index method of forecasting, which assigns ratings of favorable, unfavorable, or indeterminate to influencing variables. They describe how index methods have been applied in other decision-making contexts, and they discuss...

The authors report the results of several forecasting experiments they conducted with university students and experts, producing some amazing results. Copyright International Institute of Forecasters, 2005

When financial columnist James Surowiecki wrote The Wisdom of Crowds, he wished to explain the successes and failures of markets (an example of a "crowd") and to understand why the average opinion of a crowd is frequently more accurate than the opinions of most of its individual members. In this...

Using findings from empirical-based comparisons, the author presents nine generalizations that can improve forecast accuracy. These are often ignored by organizations, so that attention to them offers substantial opportunities for gain. Copyright International Institute of Forecasters, 2005