Groups Make Better Self Interested Decisions, from Carder Dimitroff

September 19, 2012 |

Groups make better self interested decisions.

This is confirmed by the process used to judge Olympic and NCAA diving. Judging diving is a subjective process. Actual scores are not important; consistency is very important. So if a judge consistently judges low, it doesn't matter to the diver.

To eliminate favoritism and mathematical fairness, a diver's overall score for an individual dive is calculated in the following way:

Each of the seven judges awards a score to a diver for his or her dive. (Ex: 6-5-5-5-5-5-4) The two highest and two lowest scores are eliminated. (Ex: 6 and 4 and two of the 5s are eliminated.) The remaining scores are totaled. (Ex: 5 + 5 + 5 = 15) This total (15) is then multiplied by the predetermined degree of difficulty rating associated with the particular dive performed to calculate the overall score. These degree of difficulty ratings range between 1.2 to 4.1, in one-tenth increments. (Ex: 15 × 2.0 = 30)

So groupthink generally works if outliers are eliminated.

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