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
Response Style Indicators And The Concept Of Integrity
Two recent papers have questioned the assumption that validity scales in personality testing, such as social desirability, address inherent problems of self-report
The Problem with Academia as a Medium of Change or Critique
I have received a lot of correspondence that notes a genuine surprise at the reality of the discipline of I/O psychology. Many
What Are The Areas Where Qualitative Methodologies May Be Appropriate?
What are the areas where qualitative methodologies may be appropriate? I have discussed before the limitations of the discipline as a quantitative
Psychometricians Take a Bow!
Today I only have time for a very short blog. This is a tribute blog to one of the areas of psychology
Ipsative Tests: Psychometric Properties
In this final blog, I want to look at the psychometric properties of ipsative measures and also look at the supporting evidence for ipsative tests.
Computer Adaptive Testing (CAT) and Ipsative Personality Assessments
There appears to be a resurgence of ipsative testing under the veil of CAT (Computer Adaptive Testing) for personality. Clearly, there is