The Role of Cognitive Bias in Safety Decisions: Judgments That Leaders Make about Staffing, Scheduling, Capital Expenditures and Many Other Concerns All Have Implications for the Environment of the Organization-And for Its Safety Outcomes
Krause, Thomas R., Occupational Hazards
In the last column, we discussed the importance of creating a "change-ready" culture. When the conditions are right, the likelihood increases that safety-directed initiatives will succeed. Leaders create the right conditions not only through their behaviors, but also through their decisions.
Safety leaders make decisions under many different pressures while managing the risks inherent in the working interface and seeking to satisfy a variety of constituencies. These pressures often do not explain mistaken decisions that in hindsight were preventable. For example, what causes a leader to keep a poor performing manager who fails to improve despite repeated coaching, or another to postpone equipment repair that would reduce exposure?
Judgment Under Uncertainty
Many safety-related decisions require a leader to make accurate judgments about future likelihoods. After an undesirable outcome, it frequently seems clear what should have been decided. Too often, if we look carefully at what we knew before the event, we had all the information we needed to make a safety-supporting decision, but we didn't pay attention to it. A rich scientific literature in cognitive psychology offers insight into why this is: human beings tend to make inaccurate judgments about future probabilities in predictable ways. These tendencies toward faulty judgments are called cognitive biases.
In an otherwise complex world, cognitive biases allow us to establish shortcuts that simplify decision making, make our world more predictable and absorb new information consistently with what we already know. Cognitive biases are automatic and unconscious. They shape how human beings select and process information.
It's usually ok for the organizational leader to make decisions without purposeful consideration of cognitive bias. But there are critical decision points at which cognitive bias can be disastrous. For example, when faced with an adverse event, how often does the first idea for which there is evidence capture the organization's attention and come to dominate subsequent thinking and analysis to the exclusion of other causes--especially cultural and systems issues? In this case, the cognitive bias called "anchoring" obscures the true causes of the event, leading to a course of action that perpetuates the problem.
Cognitive bias can cause leaders to underestimate exposure risk and overestimate the capability of systems to mitigate hazards. While any single decision may be insignificant by itself, a series of small decisions can create a path to disaster.
The biases that affect safety and organizational culture change decisions include:
Anchoring--Putting too much weight on the first information received or on a specific piece of information over all others. …