Did You Know… #53

Researchers (Young, Lareau, and Pierre) calculated that in the DSM-5 there are 270 million combinations of symptoms that would meet the criteria for both PTSD and major depressive disorder. Reference: G. Young, C. Lareau, B. Pierre (2014). One quintillion ways to have PTSD comorbidity: recommendations for the disordered DSM-5. Psychol. Inj. Law, 7 (2014), pp. 61-74.

Did You Know… #52

Olbert and colleagues (2014) reported considerable heterogeneity within the criteria of individual diagnoses, showing that in the majority of diagnoses in both DSM-IV-TR and DSM-5 (64% and 58.3% respectively), two people could receive the same diagnosis without sharing any common symptoms. Reference: C. M. Olbert, G. J. Gala, L.A. Tupler (2014). Quantifying heterogeneity attributable to polythetic diagnostic... Continue Reading →

Did You Know… #51

There is a stark difference between highly specific diagnostic criteria and those with more flexibility around symptom presentation. As a result, there are almost 24,000 possible symptom combinations for panic disorder in the DSM-5, compared with just one possible combination for social phobia (Galatzer-Levy and Bryant, 2013). Reference: I. R. Galatzer-Levy, and R. A. Bryant (2013). 1636,120 Ways... Continue Reading →

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