Wealthy people may have gotten that way by working hard and saving. But they aren't immune from making behavioral financial mistakes, according to advisors who work with rich families. One of the biggest missteps is avoiding discussing money with family members -- what is the goal of that money, and what do parents expect from heirs? There are others, though, including rushing to nail down a prenuptial ahead of a marriage without having a frank discussion with one's soon-to-be spouse.

Among other most-read wealth management articles this week:

Vanguard's model portfolio push . Many financial advisors have outsourced some or all of the task of constructing portfolios to external asset managers. Low-cost fund pioneer Vanguard is hoping to gain more of that business with a recent move that allows advisors to customize existing Vanguard model portfolios to best suit clients' unique needs.

Tracking retirement fear . Retirement savers carry plenty of justified fears: running out of money, changes to Social Security, rising healthcare costs, becoming a burden to their children, and more. Guest columnist David Conti writes about how he created a retirement fear index to help financial advisors understand which collective fears are most weighing on clients. The index registered a decline in August. That is positive news, even though folks still have plenty of concerns.

Firing at Forbes . The media outlet's top editorial executive, Randall Lane, is out of a job after he accepted a $6 million gift from RJ Shook, the former head of an organization that helps Forbes produce its financial advisor rankings. Neither Lane nor RJ Shook could be reached for comment, but Lane told the New York Times that he took responsibility for not disclosing the gift to his employer.

Lessons from a fraud case . In June, Ken Leech, a former bond fund manager at Western Asset Management Company, pleaded guilty to obstructing an investigation into an alleged $600 million fraud involving cherry-picking. A new report from investment research firm MPI suggests investors could have seen signs of problems in the funds the manager oversaw long before the investigation started. "The lesson is that when one senior [portfolio manager] or team manages multiple related products with overlapping opportunity sets, those products should not be reviewed only one by one," the report says. "They should also be screened together."

Stifel settles again . The brokerage firm's bill related to former star broker Chuck Roberts continues to balloon. Stifel last month settled two more cases brought by former clients of Roberts, whose failed structured-notes strategy has resulted in a flood of customer claims seeking damages. More than a dozen cases are pending.

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