Dual coding theory = Why video is #1

Justin Vajko • July 26, 2026

Your brain has a secret.

(and it’s why video works so well in marketing)


Your brain learns best when it gets 2 signals at once.


It's called dual coding theory.


When you hear something & see something at the same time, you create 2 mental files instead of

1.


Double the files = double the chance you’re going to remember, understand, and use that concept later.


(it’s why Ivy League students put such a huge emphasis on going to lectures. it’s way more effective than just reading the textbook by yourself)


Video is such a powerful tool because you’re not just reading somebody’s ideas from a LinkedIn post OR hearing someone’s hot takes on a podcast without seeing their face.


You’re hearing them & seeing them at the same time.


Your brain is taking in their tone, their confidence, and mannerisms.


Everything you’d be taking note of if you met them in person and were deciding: “Hey, is this person trustworthy? Are they legit?”


The science is clear.


If you’re running a business and trying to build trust on LinkedIn, you’ve got to turn on the camera and talk.


Dual coding: Use your face & your voice.


Trust travels faster that way.


Justin Vajko

About Justin


Justin is a marketing nerd. His gateway drug was in middle school when he and his buddies would make up brand names and draw logos for fun. He graduated with a B.A. in Graphic Design from UW Eau Claire. He then cut his teeth leading the marketing for a $4 million non-profit, moving them into the digital age with new channels and systems. He joined a $60M healthcare manufacturer as marketing team of 1, helping grow them to $90M in three years. Justin became a full-time marketing entrepreneur in 2018. He now enables founders to grow their pipeline and thought leadership through social media videos. Follow him on Linkedin here.

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Justin sits down with Justyna Ciecierka to explore what's really keeping people from creating effective video content. It is not a lack of equipment or editing skills. It is performance anxiety. Justyna shares a simple framework for creating videos that connect with buyers, build trust, and stay memorable without sounding scripted or overproduced. ----- Free Video Mini Course on getting leads with video on LinkedIn: https://www.dialogwith.us/intro Justin Vajko runs Dialog Video Marketing, a video agency for busy entrepreneurs who want to be visible online. To learn more: https://www.dialogwith.us
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