Editorial note – The Archive

The Social Innovation online Journal is changing its format. During this process, the archive with past publications will not be available until the end of this process. We apologize for any inconvenience. To obtain a confirmation of publication, authors or interested parties are encouraged to write to the editor, by e-mail. Thank you for your understanding.

How does certainty evolve in group decisions?

In group decisions by consensus, being more certain does not imply making a better decision. In social psychology, certainty is the degree to which a person is sure that the decision made is correct (accurate). For a while, people thought that group decisions increase decision accuracy, but recent research showed that only the certainty of the decision increases under these circumstances (Punchochar and Fox, 2004). Researchers also thought that under certain conditions, group discussions may lead to an increase in knowledge connected to the decision task, but Fidler and Kareev (2006) proposed an experiment in which an increase in the quantity of information made participants more uncertain. In their experiment, a smaller sample of information lead to an increase in the accuracy of decisions. Their observation was explained by the fact that smaller samples can have a wider variation. read more