Not All Rookie Directors Are the Same

Rookie directors accounted for 9.01% of directors on S&P 1500 boards in 2007. By 2022, their share had risen to 26.07%. This sharp increase raises an important governance question: do inexperienced directors weaken boards, or can they make boards more effective?

Our paper, ‘Rookie Directors and Board Efficacy’ shows that rookie status alone does not provide the answer. What matters is whether an appointment changes what the board already has and which board function the company needs to strengthen.

Measuring board change

We define rookie directors as those with less than three years of prior board experience and seasoned directors as those with three years or more.

We distinguish the percentage of rookies already serving from rookie and seasoned refreshment. Refreshment captures whether a new appointment changes the board relative to the previous year across seven characteristics: gender, nationality, age, board interlocks, insider or outsider status, education, and financial expertise.

This distinction matters. Appointing a rookie financial expert to a board that already has several financial experts is different from appointing the same candidate to a board that previously lacked such expertise. The director is a rookie in both cases, but only the second appointment materially refreshes the board.

Using S&P 1500 firms from 2007 to 2022, we examine how rookie and seasoned refreshment affect the board’s two central functions: monitoring management and advising on major corporate decisions.

Rookie refreshment strengthens monitoring

Rookie refreshment is associated with stronger monitoring across several measures.

A one-standard-deviation increase in rookie refreshment strengthens the sensitivity of CEO turnover to accounting performance by about 22.5% and to stock performance by about 13.2%. It also increases pay-for-performance sensitivity by 4.42% and pay-for-risk sensitivity by 5.46%, and is associated with lower discretionary accruals.

These results point to stronger CEO accountability, sharper compensation incentives, and better financial-reporting oversight.

The percentage of rookies on the board does not produce comparable effects. The monitoring benefits appear when rookie appointments change the board’s existing composition, not simply when the board contains more inexperienced directors.

The effects are stronger where fresh oversight may be especially valuable, including firms with highly experienced incumbent directors, seasoned CEOs, and more opaque financial reporting. They are also stronger in less complex firms and more stable industries, where new directors may find it easier to understand the business and challenge management effectively.

Seasoned refreshment strengthens advising

The results differ for the board’s advising function.

Rookie refreshment does not significantly improve investment efficiency or acquisition outcomes, but it does not weaken them either. Seasoned refreshment, by contrast, is associated with more efficient investment, fewer acquisitions, stronger announcement returns, and better long-term acquisition performance.

These findings are consistent with seasoned refreshment adding boardroom experience, strategic judgment, and external resources that are particularly useful when boards advise management on investment and acquisition decisions.

The two forms of refreshment are therefore complementary: rookie refreshment is associated mainly with stronger monitoring, while seasoned refreshment is associated mainly with stronger advising. Boards may benefit from both, but through different channels.

Why the findings matter

The results challenge how board renewal is commonly evaluated.

Investors, proxy advisers, and nomination committees often assess boards through static indicators such as independence, diversity, expertise, and prior experience. These measures are useful, but they provide only a snapshot. They do not show whether a new appointment adds a capability the board previously lacked.

A diversity measure captures what a board is; refreshment captures how it is changing. A board may satisfy diversity benchmarks yet remain largely unchanged for years, while a single appointment may add an important capability that static diversity measures do not capture. Diversity and refreshment are therefore related, but they measure different dimensions of board quality.

The practical implication is that appointments should be evaluated against the board’s existing composition and the function that needs strengthening. A company seeking stronger oversight may benefit from rookie refreshment that introduces a genuinely new perspective or skill. A company facing difficult investment or acquisition decisions may benefit more from seasoned refreshment.

The paper does not imply that every board needs more rookies or that seasoned directors are always better advisers. The value of an appointment depends on what the board already has, what the company needs, and what the new director changes.

The key question is not whether boards should choose rookies or seasoned directors. It is whether rookie or seasoned refreshment adds the capability the board currently needs.

See the full paper here.

Bilal Al Dah is an Assistant Professor of Accounting at Kean University. 

Mustafa A. Dah is an Associate Professor of Finance at Lebanese American University.

Konstantinos Stathopoulos is a Professor of Accounting and Finance at the University of Manchester.