The Cross Over Benefits of Willpower
The photo above was taken 18 years ago moments before I took the stage in a regional bodybuilding competition in New Zealand.
The Myth That Criterion Related Validity Is a Simple Correlation Between Test Score and Work Outcome
This is a myth that can be discussed with relative simplicity: Criterion validity is far more than the simple correlations that are
Attacking the Myth That Personality Tests Don’t Add Value
For this month’s myth, the last on the topic of psychometrics, I have chosen a slightly different approach. I’m coming out in
The Myth of Impartiality: Part 2
This month, I look at the myth of impartiality from the perspective of the users (HR professionals and recruiters) and suppliers of psychometrics.
The Myth of Measurement
I would like to begin by apologising for not getting a myth out last month. I was working in the Philippines. Having
The Myth of Significance Testing
When I decided to leave work and go to University to study psychology I did so because of a genuine fascination with
The Signal and the Noise: Why So Many Predictions Fail
In a recent book, Nate Silver illustrates the limitations of people to think in probabilistic terms and build models that incorporate uncertainty.
Replication, Measurement, and the Advancement of I/O Psychology: Two Years On
Two years ago when this blog was started, the key driver was to have a forum, not only to discuss best practice
New Zealand: The Home Of Culturally Appropriate Testing
New Zealand is a fantastic country. This statement will come as no surprise to many but it is often taken for granted
The Social Implications If Traits Exist
In a previous post, I presented arguments for whether traits do exist at all. The leading proponent of this is the likes