Final answer:
True, data warehousing helps evaluate multiple dimensions of risks but isn't enough for overall risk evaluation as human factors and decision-making processes also play a critical role, evidenced by the study of operators' decision accuracy and the Target data breach incident.
Step-by-step explanation:
The statement that a firm's data warehousing of risk data allows decision makers to evaluate multiple dimensions of risks, but is not sufficient for overall risk evaluation is True. Data warehousing can provide a comprehensive view of risk data, but for a thorough risk evaluation, other factors need to be considered, such as human factors, decision-making under stress, and the potential for cognitive overload. Studies in human factors psychology, such as the one conducted by Bruno & Abrahão (2012), have shown that an increase in the volume of decisions can lead to a higher rate of errors, suggesting that risk management must also account for human decision-making processes and the accuracy of the evaluations performed by people. This is supported by the example of the 2013 Target data breach where security personnel failed to correctly interpret signals of a breach.