Avatar of Thijs de Valk

Thijs de Valk

I have a Master’s degree in Pedagogical Sciences, which can be best understood as developmental psychology. As a behavioural scientist, I’m interested in how people interact with our products, services and how they view our brand as a whole. I’ve recently taken on the role as CEO. Yoast is an amazing company that I'm honored to lead through its next chapters!

You can find Thijs on: TwitterLinkedinFacebookWordPress

I’m married to my lovely wife and together with our two sons and daughter we live within walking distance from the Yoast office in Wijchen. I enjoy watching Netflix, drinking beer and meeting up with friends.

I’m an SEO enthusiast and thoroughly enjoy the impact Yoast and WordPress can make on the (open) web.




Shopping cart abandonment

12 April 2016 | 14 Comments | Thijs de Valk

We optimize our checkout process continually. To do so, we keep track of our shopping cart abandonment. Why won’t people complete their purchase, even after they have already added your products to their shopping carts? That’s what we’ll discuss in this article. Some of the reasons for shopping cart abandonment are so obvious, that you would almost […]

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Shopping cart abandonment

Multivariate testing: what it is and when to use it

5 August 2015 | 3 Comments | Thijs de Valk

We’ve written quite some posts on Conversion Rate Optimization and A/B testing on yoast.com in the last few years. However, we’ve never really touched the subject of multivariate testing. In this post I’ll explain what multivariate testing is, its pros and cons and when you should (and should not) be using it. What is multivariate testing? […]

Read: "Multivariate testing: what it is and when to use it"
Multivariate testing: what it is and when to use it


Visually direct and captivate your visitors

In the last month I’ve been speaking at a few conferences with a talk I’ve dubbed “The Psychology behind Conversion”. In this talk I’m trying to explain why everyone who maintains a website should be interested in psychology and how it can help them. Being interested in psychology, especially when applied to the web, is […]

Read: "Visually direct and captivate your visitors"
Visually direct and captivate your visitors



Conversion rate optimization: hypothesise first, then test

19 June 2013 | 32 Comments | Thijs de Valk

Since I began working at Yoast, I’ve been busy with a lot of things, but my personal favorite definitely is this one: conversion. Maybe this is because of my background in behavioral science. Or maybe I just prefer bigger numbers to smaller ones. In any case, the fact remains: I’m hooked. Now, for the people […]

Read: "Conversion rate optimization: hypothesise first, then test"
Conversion rate optimization: hypothesise first, then test

Thijs likes to talk about Yoast SEO, ecommerce SEO and user experience.

  • Site reviews by Yoast

    [Dutch] Thijs reviewed two websites at WordCamp NL. Check out the video to discover his findings!