Senior executives at a large tire company learned that one line of tires had a tendency to fall apart in very warm weather. This resulted in several vehicle accidents in the Middle East and South America. However, the executives did not hear about these problems until several weeks after they were known to lower-level managers. Although the senior executives encourage staff to communicate all information, the lower-level staff held back the information for fear that they might lose their jobs. Which communication concept best describes this communication situation?