Certified Presenters

Kathleen Edelman has dedicated over 30 years to helping people speak kindly to one another by mastering the art of communication. She specializes in using the four temperaments as a foundation for building meaningful connections among individuals, families, and teams. With a Master's in Christian Counseling Psychology, Kathleen is a trusted counselor, coach, and trainer who has a deep heart for strengthening marriages, supporting parents, empowering educators, and equipping leaders.

Dr. Lindsay Peaster is an educator, communicator, and certified presenter with a passion for helping people understand one another and communicate more effectively. With a background in speech-language pathology and a Ph.D. in Special Education, she brings a unique blend of communication expertise, educational experience, humor, and practical application to every group she serves.

Throughout her 24 years of teaching, Lindsay has developed two innovative classroom models, including Middle Grounds, a middle school communication course where temperament principles are woven into daily lessons on leadership, teamwork, relationships, and everyday life. She brings that same practical approach to presentations with large and small groups, school staffs, sports teams, churches, businesses, couples, and families, tailoring each experience to the people in the room.

Lindsay believes relationships change when people truly understand themselves and one another. She has seen the value of temperament language firsthand in her classroom, family, friendships, and professional relationships.

Lindsay lives in Madison, Georgia, with her husband and three sons. She loves traveling, building relationships, and welcomes opportunities to share this message with groups near and far. When she isn’t teaching or presenting, you can often find her on a sideline, in the bleachers, or in the stands, cheering on her boys.

Since finishing her master’s in social work, Kim has been counseling adolescents and families for over 20 years. Kim currently works for Pathways2life as a Parent Specialist walking beside parents whose teens are struggling. After attending a women’s conference and hearing Kathleen teach the temperaments, Kim tells everyone who will listen how the temperaments have changed her family and transformed how she counsels clients. Kim was married for 32 years before her husband passed away in 2019. She two grown children and a cockapoo named Roxie.

Heidi Hinkel believes communicating with kindness has the power to change everything, from a boardroom to a living room. Using Kathleen Edelman's I Said This, You Heard That framework, she helps audiences understand not just WHY they say what they say, but how those words are heard by others.

Her fascination with human behavior started long before her work with the four temperaments. As a professional stage and voiceover actor, and later a professor of Theater, she spent years studying how people communicate through tone, timing, and presence. This background makes her engagements feel less like a lecture and more like a conversation.

Heidi feels equally at home in a corporate boardroom, a ministry gathering, a school assembly, or a multi-day conference. Whether the room holds ten people or ten thousand, her goal is the same: equip people with better tools for connection. Heidi’s motivation for doing this work is her conviction that every single spoken word of kindness creates a ripple effect farther and wider than we might possibly imagine… a message that tends to stick with a room long after she leaves it.

Heidi lives near Atlanta with her husband and three little boys, and travels anywhere the message is needed.

Cory has worked in ministry for over 15 years and has seen firsthand how lives are changed when we learn to communicate in ways that build others up. He's certified in a few personality assessments and has experience in personal coaching. Through that experience, he discovered that the temperaments are the most practical, applicable, and impactful in all types of relationships.

As a husband and a father of three, he's recently grown a passion to help men in particular learn the temperaments and apply them in their marriages and their parenting. A husband's and father's words carry more weight than we often realize!

Cory also has been doing improv comedy for over 20 years, and loves to bring fun and participation into everything he does.

Nathan Castleberry is a husband, dad, pastor, and leadership enthusiast who loves helping people understand why we think, communicate, lead, and relate so differently.

As Lead Pastor of Local Church Canton, Nathan spends his days leading teams, developing leaders, teaching Scripture, and navigating the wonderfully complicated world of people. His teaching combines humor, practical insight, and real-world experience to make temperament theory immediately useful.

Through I Said This, You Heard That, Nathan brings the temperament framework to staff teams, executives, workplaces, parents, married couples, and ministry leaders. His sweet spot is helping people understand themselves, communicate more effectively, navigate conflict, and appreciate the people who are wired differently than they are.

His goal is simple: help people understand people better.

Allison Davis is a programmatic monitor for an Area Agency on Aging. She enjoys leading Bible studies and teaching adult Sunday School at her church. Allison is most comfortable working with adults, particularly in church and business settings. Learning about the temperaments unleashed her passion for wanting everyone to learn better communication skills and how to choose kind words. As Kathleen says, “Once you learn about the temperaments, you can’t unsee it.” She is open to traveling to groups within Georgia. In her free time, she enjoys piano, creating handmade greeting cards, getting together with friends and time with her husband and two adult children. Allison would love for you to reach out to her at georgiaalli@gmail.com.

Shawn Elizabeth George is an author, wellness professional, speaker, podcast host, and certified presenter of I Said This, You Heard That. A former health educator, mom of three, and lifelong student of wellness and communication, Shawn is passionate about helping people understand themselves and others so they can communicate with greater understanding, intention, and grace.

After surgery that removed much of her palate, Shawn gained a profound appreciation for the gift of communication and the ability to speak and be heard. Her cancer journey continues to shape her desire to help others use their words to encourage, connect, and strengthen relationships.

Through I Said This, You Heard That, Shawn helps participants discover how they are uniquely wired, understand why others may communicate and respond differently, and gain practical tools to build stronger, more meaningful relationships.

Shawn lives in Connecticut with her husband and their three children. As someone who is naturally wired as a yellow-green, and whose family represents nearly every temperament combination, she has had years of firsthand experience putting this framework into practice in her personal and professional life.

To learn more about bringing I Said This, You Heard That to your organization or community, connect with Shawn at shawnelizabethgeorge@gmail.com.

Trace Blackmore is the CEO and founder of Blackmore Enterprises and The Rising Tide Mastermind, and hosts the "Scaling UP! H2O" podcast. A seasoned business owner, leadership coach, and keynote speaker, Trace offers valuable advice to clients aiming to improve team communication and leadership. With over 25 years of industry experience, Trace guides executives, teams, and entrepreneurs to elevate their leadership skills and achieve greater success. Outside of work, Trace enjoys SCUBA diving with his family. He is married and has a son, with whom he shares this passion.

Jennifer Gastley spent 22 years in education as a principal and Head of School, where she was passionate about building strong, thriving school communities. For ten years, she shared the principles of I Said You Heard with staff, administration, families, and students—seeing firsthand the 360° impact improved communication can have on an entire school community. Today she helps schools and organizations strengthen relationships and create environments where people truly feel heard.

For more than 25 years, Heather has worked with children, families, and volunteers through education and ministry. But it was being introduced to Kathleen Edelman’s work on temperaments that shifted the way she communicates and changed how she understands herself, relates to others, and approaches relationships.

What began as a desire to better relate to the people around her has become a calling. Understanding temperaments has given Heather greater insight into how people are uniquely wired and has strengthened her ability to lead with grace, extend love, and communicate in ways that connect with others.

It has transformed the way Heather and her husband communicate with one another and shaped the way they have parented their two very different children. It has also given her a passion for helping individuals, families, and teams discover how understanding temperament can create healthier, more effective communication.

Heather lives in the Atlanta area with her husband, Todd. She loves to travel, spend time with friends, and work out. And when she isn’t working or doing the things she loves, you can usually find her cheering—loudly—for her daughter on stage or cheering—quietly—for her son from the sidelines.