User Experience Is an Elusive Thing, or Conversion Rate & Average Order Value Are Not UX Metrics!

In this article, I review six metrics commonly used to measure UX: conversion rate (CR), average order value (AOV), task success rate, time on task, Net Promoter Score® (NPS), and the System Usability Scale (SUS). CR, AOV, and NPS do not fulfil the definition of a UX metric while task success rate, time on task, and SUS do. Still, none of the metrics (alone) is suitable to reliably measure the UX of a digital product.

My Ultimate List of Books You Need to Read If You Want to Truly Understand Digital Design: A Work in Progress

This list contains the books I believe everyone who wants to truly understand what digital design is all about needs to read. I've tried to roughly categorize them into more foundational topics and then somewhat along the double diamond: finding the right problem and finding the right solution. To provide a glimpse into the future, I also list some books on designing for an with (a selection of) novel types of interfaces.

5 Foolproof Conversion Rate Optimizations for Your E-commerce Business

When hearing conversion rate optimization, many think of the application of psychological principles such as social proof or scarcity. But before employing those, e-commerce businesses first have to get their fundamentals down—which many don't. In this article, I present five foolproof (and proven) ways to optimize your conversion rate: optimizing your checkout, getting rid of shipping costs (as much as possible), focusing on usability, getting rid of dark patterns, and gaining a deep understanding of your customers.

The Design Philosophy Behind My New Website

After analyzing my old website, I decided to put more emphasis on (1) identifying and highlighting the pieces of information that are actually useful and (2) a two-dimensional approach to displaying my CV along traditional categories and skills/topics. Moreover, I set myself design constraints that forced me to keep my new website as clean and simple as possible, following the design philosophies of brutalism and Mies van der Rohe.

Schrödinger’s Website

Before you receive feedback from users, the user experience and usability of your website are both 'good' and 'bad' at the same time.* Through a good design process you can only raise the chances of user experience and usability manifesting as 'good'** once the feedback arrives. * That is, the factors $latex x$ and $latex… Continue reading Schrödinger’s Website

The U Score: Redesigning Usability Testing

Usability testing is often perceived as cumbersome and time-consuming and therefore not thoroughly applied. This was one of the key observations leading to the topic of my PhD thesis. Particularly conducting tests with actual users is often omitted, which results in the release of suboptimal products and websites. In my thesis, I tackle this problem through more… Continue reading The U Score: Redesigning Usability Testing