- Tips for data analysis with Excel May 7, 2013Last week, I commented on a prominent data analysis blunder in Excel. Even if this particular problem seems to result from the spreadsheet's design, anybody doing data analysis has experienced coding errors, no matter the tool. That doesn't mean that nothing can be done to reduce their occurrence. Phil Price shared some tips on avoiding […]
- Reinhart and Rogoff's Excel blunder and human-computer interaction April 25, 2013If you follow any stats blog, you have probably heard of Reinhart and Rogoff's paper “Growth in a Time of Debt” by now. If you missed it, it's a paper arguing that public sector debt levels over 90% are associated with much lower growth. It was published three years ago but it has been much […]
- Neuromarketing: What lies beyond the hype? January 31, 2013Neuromarketing is once again making some (discrete) headlines. This time, it's a study purporting to show that eating chocolate is more pleasurable than many things (but less than finding money). The problems with such studies have already been discussed at length elsewhere but there is a small detail that is often overlooked: Even if you […]
- Repeated tests, product tests and A/B tests December 7, 2012The Atlantic just published a profile of Uri Simonsohn (noticed via Andrew Gelman and Sanjay Srivastava). Simonsohn recently made headlines as he uncovered several cases of scientific fraud but this article also reminded me of some interesting earlier work done by Simosohn's group on how some simple mistakes or “tricks” can severely alter threaten the […]
- Tips for data analysis with Excel May 7, 2013
I am a post-doctoral researcher working with Pieter Desmet in the Design Aesthetics group of Delft University of Technology’s Industrial Design faculty. I have a background in computer science, cognitive science and psychology and recently completed a PhD on the moment-to-moment measurement of emotion during person-product interaction under the supervision of Paul Hekkert and Pieter Desmet. I am currently developing a questionnaire to measure feelings like freshness or femininity across cultures.
I am interested in everything that happens between people and the things they use or work with and the ways to study them from psychophysiology and behavioral observation to machine learning and online research. In the course of my work on the measurement of emotion, I also developed an interest in psychometrics and the practical implications of measurement reliability and validity for real life product evaluation.
If you are interested in my research, you might want to check out Pieter’s labmark.