Dan Clements on "Lending Power", Mastery-Based Environments, and How Autonomy Ties to Motivation

In this week’s episode of Slappin’ Glass, we’re joined by coach developer and researcher Dan Clements for a conversation on building environments where players are motivated to learn, compete, and keep coming back.

The discussion starts with the difference between mastery-based and performance-based environments, and why the best coaches are able to chase results without letting every practice, conversation, and piece of feedback become purely outcome-driven. Clements details how voice, choice, task design, and differentiation can help players feel more invested in their own development, while still operating inside the demands of high-performance sport.

From there, the conversation moves into one of the harder parts of coaching: knowing when to intervene. Clements shares why coaches often misremember what actually happened in a session, how staff reflection can sharpen future practices, and why the best feedback compares a player to themselves, not to the person next to them.

The episode also explores strength-based coaching, the difference between honest positivity and toxic positivity, and why leaders don’t give away control as much as they “lend power” through clear values, routines, and player ownership.

This week’s Start, Sub, or Sit focuses on motivation, with Clements choosing between autonomy, competence, and relatedness, and offering practical thoughts on helping struggling players regain confidence through better task design, developmental feedback, and small wins.

What You’ll Learn

•  Why mastery-based environments can still exist inside performance-driven programs. 
•  How voice and choice increase player investment without removing structure. 
•  What differentiated coaching looks like inside a live practice. 
•  How to know when to intervene, coach on the fly, or simply observe. 
•  Why coaches often misremember their own practices. 
•  How better reflection can improve staff development and practice design. 
•  Why feedback should compare a player to themselves, not someone else. 
•  How to coach from strengths without slipping into toxic positivity. 
•  Why autonomy is more about “lending power” than giving up control. 
•  How task design and developmental feedback can help struggling players regain confidence. 

Top Moments

02:00 — Mastery vs. performance environments
Clements explains how coaches can build environments that support long-term development without ignoring the pressure to win.

03:17 — Voice, choice, and player investment
A practical look at how giving players some ownership inside a session can increase motivation and commitment.

04:25 — Differentiated coaching in practice
Clements breaks down how one task can serve different players through roles, observation, and specific feedback.

06:01 — The art of intervention
A sharp section on when to stop a drill, when to coach on the fly, and how coaches can study their own feedback habits.

07:33 — Reflective practice for coaches
Clements outlines how coaches can review sessions through intended outcomes, actual outcomes, and useful next adjustments.

10:59 — The TARGET framework
A deeper look at task design, grouping, feedback, player voice, and time as levers for building a mastery climate.

16:05 — Strength-based coaching without toxic positivity
Clements explains how coaches can be honest, demanding, and direct while still building from what players do well.

21:04 — “Lending power” as a head coach
One of the best leadership ideas in the episode: autonomy does not mean giving up authority.

26:50 — Start, Sub, or Sit: Motivation
Clements ranks autonomy, relatedness, and competence as drivers of player motivation.

31:11 — Helping struggling players regain confidence
A practical section on stretch zones, task design, developmental feedback, and creating small wins.

33:29 — The best investment: curiosity
Clements closes with a strong thought on looking outside your own sport and holding your beliefs lightly enough to keep growing.

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