The "Split-Brain" Leader: Why You Can’t Innovate and Execute with the Same Strategy

Research shows that "transformational" leadership isn't a catch-all solution; to succeed, leaders must toggle between "Inspirational Motivation" to drive execution through alignment and "Intellectual Stimulation" to spark creativity through disruption.



Introduction

Leaders have a dual mandate: on one hand, they must deliver flawless results in the present, while also inventing solutions for the future. Management experts often suggest that a “transformational” leader can achieve both simultaneously. However, recent research suggests otherwise.

A 2015 study by Boies et al. reveals that behaviours that drive efficiency (reducing errors) are distinct from those that drive creativity. Therefore, to succeed, leaders must rethink performance. Instead of treating it as one metric, it has to be split into two: inspirational motivation (IM) and intellectual stimulation (IS). Depending on the required outcome, one must toggle between the two.

The Execution Lever: Inspirational Motivation

For cases where the objective is task performance (minimising errors and hitting targets), Boies et al. point to IM.

This style is focused on offering a compelling vision, expressing confidence in the team, and creating a collective identity. In the study’s experimental trials, teams led by such a leader committed significantly fewer errors than teams led by intellectually stimulating managers.

In large part, this is a consequence of IM creating a unified focus. A 2018 McKinsey report finds that having a clear, shared purpose can help guide a team through complex execution without deviation. Indeed, to successfully complete a task, alignment is paramount.

The Creativity Lever: Intellectual Stimulation

Nevertheless, if the objective of your task is innovation, IM is likely to fail. Boies et al. found that IS is superior at engendering novelty.

IS involves challenging existing paradigms, questioning assumptions, and encouraging the team to be unconventional. Such frictions are likely to risk short-term efficiency; however, they are highly effective at breaking existing cognitive patterns.

Furthermore, a McKinsey report has found that leaders who shift from a mindset of certainty (i.e. playing not to lose) to discovery (i.e., playing to win) foster the agility required for innovation.

The Black Box of Communication and Trust

These two differing approaches are effective because they unlock the black box of team dynamics: communication and trust.

Boies et al.’s research demonstrates a clear chain of events:

Firstly, leadership triggers communication. Both IM and IS styles are correlated with teams speaking more words per minute than control groups.

This communication builds trust. The exchange of information enables team members to assess each other’s competence and integrity, developing collective trust.

Finally, trust drives performance by reducing errors and improving execution.

Ultimately, a leader cannot demand trust directly; at best, it is inefficient, and at worst, it creates unnecessary friction. Rather, it is a leader’s role to stimulate the communication that organically develops trust.

Conclusion

Overall, leadership is not about having a particular style. Instead, possessing a diagnostic mindset is key.

If a team is failing to execute, one must switch to an IM mindset to align the team to a single vision, thereby reducing errors. Conversely, if a team is stagnant, shifting to an IS mindset enables the team to bulldoze existing paradigms and innovate. However, above all, the underlying mechanism is communication, which enables the creation of the trust required to succeed.


Sources

Boies, K., Fiset, J., & Gill, H. (2015). Communication and trust are key: Unlocking the relationship between leadership and team performance and creativity. The Leadership Quarterly, 26(6), 1080–1094.

McKinsey & Company. (2018). Leading agile transformation: The new capabilities leaders need to build 21st-century organizations.

 

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