ABOUT

Get more customers by understanding why people buy—and why they say no.

ABOUT

Get more customers by understanding why people buy—and why they say no.

His research guided product & marketing decisions
affecting 45 million+ customers

His research guided decisions affecting
45 million+ customers

His research guided decisions
affecting 45 million+ customers

His work also helped bring in tens of millions of dollars in revenue.

His work also helped bring in tens of millions of dollars in revenue.

About Nii

Nii Codjoe lives with his wife in Denver, Colorado. He’s a chess nerd and avid reader who enjoys the quiet of the mountains.

For over 10 years, Nii helped organizations grow revenue and improve retention by uncovering customer needs and using those insights to guide product and marketing decisions.

He has worked with WeightWatchers, the CDC, the American Cancer Society, and InterContinental Hotels Group (IHG).

As an Inc. Magazine columnist, Nii writes Profitable Psychology, exploring how business leaders can apply consumer psychology to grow revenue. His writing has also appeared in Psychology Today.

Previously, Nii served as Director of Growth at The Cialdini Institute, joining at Dr. Robert Cialdini’s invitation.

Dr. Cialdini is a leading authority on persuasion and author of the New York Times bestseller Influence. The book has sold 7 million+ copies and been translated into 48 languages.

Nii is one of a handful of people worldwide who have worked directly with Dr. Cialdini as a business colleague. That experience shapes his work as a fractional growth advisor.

He combines customer research, business analytics, and behavioral science to uncover buying motivations, sharpen your positioning and messaging, and help you turn more interest into sales.

About Nii

Nii Codjoe lives with his wife in Denver, Colorado. He’s a chess nerd and avid reader who enjoys the quiet of the mountains. He also loves spending time with their goldendoodle, Nikos.

For over 10 years, Nii helped organizations grow revenue and improve retention by uncovering customer needs and using those insights to guide product and marketing decisions.

He has worked with WeightWatchers, the CDC, the American Cancer Society, and InterContinental Hotels Group (IHG).

As an Inc. Magazine columnist, Nii writes Profitable Psychology, exploring how business leaders can apply consumer psychology to grow revenue. His writing has also appeared in Psychology Today.

Previously, Nii served as Director of Growth at The Cialdini Institute, joining at Dr. Robert Cialdini’s invitation.

Dr. Cialdini is a leading authority on persuasion and author of the New York Times bestseller Influence. The book has sold 7 million+ copies and been translated into 48 languages.

Nii is one of a handful of people worldwide who have worked directly with Dr. Cialdini as a business colleague. That experience shapes his work as a fractional growth advisor.

He combines customer research, business analytics, and behavioral science to uncover buying motivations, sharpen your positioning and messaging, and help you turn more interest into sales.

What Experts Say

Holly Listmann

Manger & Staff UX Researcher
Managed Nii at WeightWatchers

"Nii's research skills are ability to see business opportunities is refreshing."

Dr. Chris P.

Dr. Chris Phelps, DMD, CMCT

Former CEO, The Cialdini Institute
Managed Nii at The CI Institue

Cialdini Institute

"Nii is one of the sharpest business operators I’ve worked with in my career. His strategic thinking and execution ability are well beyond his years." 

Photo of Harley J.

Harley J.

Former Associate Director of UX Research at E&Y
Managed Nii at BBDO

Logo of EY

”Their job alerts are a game-changer! I snagged two interviews before my morning coffee. But the career coaching sessions felt a bit rushed. Could have used more personalize feedback on my “

Photo of Aaron C.

Dr. Jane Goldner

CEO, The Goldner Group
National Speaker
3x author

Nii worked for me while I was writing my second book. His research and writing skills far surpassed my expectations. He was a valuable contributor. I would hire him again.

What Experts Say

Holly Listmann

Manger & Staff UX Researcher
Managed Nii at WeightWatchers

"Nii's research skills are ability to see business opportunities is refreshing."

Dr. Chris P.

Dr. Chris Phelps, DMD, CMCT

Former CEO, The Cialdini Institute
Managed Nii at The CI Institue

Cialdini Institute

"Nii is one of the sharpest business operators I’ve worked with in my career. His strategic thinking and execution ability are well beyond his years." 

Photo of Harley J.

Harley J.

Former Associate Director of UX Research at E&Y
Managed Nii at BBDO

Logo of EY

”Their job alerts are a game-changer! I snagged two interviews before my morning coffee. But the career coaching sessions felt a bit rushed. Could have used more personalize feedback on my “

Photo of Aaron C.

Dr. Jane Goldner

CEO, The Goldner Group
National Speaker
3x author

Nii worked for me while I was writing my second book. His research and writing skills far surpassed my expectations. He was a valuable contributor. I would hire him again.

What Experts Say

Holly Listmann

Manger & Staff UX Researcher
Managed Nii at WeightWatchers

"Nii's research skills are ability to see business opportunities is refreshing."

Dr. Chris P.

Dr. Chris Phelps, DMD, CMCT

Former CEO, The Cialdini Institute
Managed Nii at The CI Institue

Cialdini Institute

"Nii is one of the sharpest business operators I’ve worked with in my career. His strategic thinking and execution ability are well beyond his years." 

Photo of Harley J.

Harley J.

Former Associate Director of UX Research at E&Y
Managed Nii at BBDO

Logo of EY

”Their job alerts are a game-changer! I snagged two interviews before my morning coffee. But the career coaching sessions felt a bit rushed. Could have used more personalize feedback on my “

Photo of Aaron C.

Dr. Jane Goldner

CEO, The Goldner Group
National Speaker
3x author

Nii worked for me while I was writing my second book. His research and writing skills far surpassed my expectations. He was a valuable contributor. I would hire him again.

What Experts Say

Holly Listmann

Manger & Staff UX Researcher
Managed Nii at WeightWatchers

"Nii's research skills are ability to see business opportunities is refreshing."

Dr. Chris P.

Dr. Chris Phelps, DMD, CMCT

Former CEO, The Cialdini Institute
Managed Nii at The CI Institue

Cialdini Institute

"Nii is one of the sharpest business operators I’ve worked with in my career. His strategic thinking and execution ability are well beyond his years." 

Photo of Harley J.

Harley J.

Former Associate Director of UX Research at E&Y
Managed Nii at BBDO

Logo of EY

”Their job alerts are a game-changer! I snagged two interviews before my morning coffee. But the career coaching sessions felt a bit rushed. Could have used more personalize feedback on my “

Photo of Aaron C.

Dr. Jane Goldner

CEO, The Goldner Group
National Speaker
3x author

Nii worked for me while I was writing my second book. His research and writing skills far surpassed my expectations. He was a valuable contributor. I would hire him again.

Life Beyond Work

  • Nii has been married for 12 years.

  • He taught himself to play chess in middle school.

  • Nii taught himself to play chess in middle school.

  • Nii is a dual citizen of the U.S. and Canada.en of the U.S. and Canada.

  • With a few exceptions—including the obligatory Christmas card—he’s worn only gray since 2018. He’s cautiously adding color back into his wardrobe.

  • With a few exceptions—like the obligatory Christmas card or two—Nii has only worn gray since 2018.

  • (He’s cautiously adding pops of color back into his wardrobe.)

Stop leaving sales on the table

The Working Wise
Professionals whose influence comes not from their title, but from how they think.

They’re the insightful minority quietly reshaping their organizations through their curiosity, discernment, and subtle influence. 

If you see what others overlook, sense patterns beneath the surface, and value depth over noise, you're one of us. 

This is your invitation to The Working Wise Newsletter.

No spam. Just working wisdom.

Stop leaving sales on the table

The Working Wise
Professionals whose influence comes not from their title, but from how they think.

They’re the insightful minority quietly reshaping their organizations through their curiosity, discernment, and subtle influence. 

If you see what others overlook, sense patterns beneath the surface, and value depth over noise, you're one of us. 

This is your invitation to The Working Wise Newsletter.

No spam. Just working wisdom.

Stop leaving sales on the table

The Working Wise
Professionals whose influence comes not from their title, but from how they think.

They’re the insightful minority quietly reshaping their organizations through their curiosity, discernment, and subtle influence. 

If you see what others overlook, sense patterns beneath the surface, and value depth over noise, you're one of us. 

This is your invitation to The Working Wise Newsletter.

No spam. Just working wisdom.

Stop leaving sales on the table

The Working Wise
Professionals whose influence comes not from their title, but from how they think.

They’re the insightful minority quietly reshaping their organizations through their curiosity, discernment, and subtle influence. 

If you see what others overlook, sense patterns beneath the surface, and value depth over noise, you're one of us. 

This is your invitation to The Working Wise Newsletter.

No spam. Just working wisdom.

Inc. Magazine Columnist | Behavioral Researcher | Fractional Growth Advisor

Inc. Magazine Columnist | Behavioral Researcher | Fractional Growth Advisor

Inc. Magazine Columnist | Behavioral Researcher | Fractional Growth Advisor