This time we'll begin a look at the relationships between the facet scores on the MBTI Step II Interpretive Report and the six themes of the Strong Interest Inventory. We'll start with the five facet scales involving Extraversion and Introversion. The sample size used was quite small and mostly male engineering students, so we cannot generalize too much from these results. Still, it's interesting to see the patterns.
As a quick review, a correlation might be positive or negative. That means scores either move in tandem or in the opposite direction on the two tests. The direction is not the same as the strength of the relationship. It could be strong or weak in either direction.
Let's start with the Realistic theme. The strongest relationship was positive with the Enthusiastic – Quiet scale, which means someone who was on the Quiet side of the facet scale likely scored on the Realistic theme on the Strong. The only negative correlation was with Initiating – Receiving, which means those who came out on the Initiating side were less likely to show up on the Realistic theme.
The Investigative theme has the greatest positive correlation with Expressive – Contained, meaning those on the Contained side of the facet where likely to show up as Investigative types. The greatest negative correlation was with Active – Reflective, meaning it was less likely for Active types to test as Investigative on the Strong.
For Artistic types, all but one correlation were negative. The greatest was on the Gregarious – Intimate facet, meaning they were likely to be on the Intimate side. The only positive correlation was on the Expressive – Contained facet, which means they were likely to be Contained.
For Social types, all the correlations were negative. The greatest effect was on the Active – Reflective facet, meaning they were likely to be Active. The smallest effect was on the Gregarious – Intimate facet.
Enterprising types had the greatest correlation with Gregarious – Intimate. They tend towards the former. The greatest positive correlation was with Enthusiastic – Quiet.
Finally, Conventional types had all positive correlations, with the Expressive – Contained facet scale the strongest and the Active – Reflective the weakest.