Final answer:
A homogeneous set of experiences and talents was not identified as an attribute of an effective board of directors.
Step-by-step explanation:
The attribute that was not identified in the textbook as an attribute of an effective board of directors is a homogeneous set of experiences and talents. While it is important for board members to have diverse skills and backgrounds, a homogeneous set of experiences and talents may limit the board's ability to make well-rounded decisions.
The other attributes mentioned in the options - decisiveness, strong communication with the CEO, customer-focused point of view, and ability and willingness to stand up to the CEO and top managers of the firm - were identified as important attributes of an effective board of directors.