Trauma Researchers Assure World That After 204 Factor Analysis Studies of PTSD, Factor Analysis #205 Will Finally Reveal The Secret Structure.
(a parody).
With the world riveted in anticipation, the new analysis was published last month. They found a 7-factor model fit slightly better than 4- and 6-factor models!
This was, however, unsurprising considering that in prior studies the model with the most factors fits best 87% of the time because the ’best fit’ is a mathematical fit rather than a measure of construct validity.
Everyone, relax, the authors said. Despite validity concerns, the 7-factor model still “may have theoretical and psychometric value in capturing nuanced PTSD symptom dimensions.”
At press time, those values had not been disclosed.
Hidalgo JE, Burt KB, Davidson TM, Ruggiero KJ, Andrews AR, Contractor AA, Peck K, McGinnis EW, Ha J, Noble NC, Kim JN, Ramirez V, Price M. Posttraumatic stress disorder factor structure in hurricane-affected Puerto Ricans: A PTSD Checklist for DSM-5 comparison with non-Latiné White individuals. J Trauma Stress. 2026 Feb;39(1):44-56.
More fun facts in my review below: