This week, our latest study on hoarding symptoms in young people was published in Plos One. In this study, we used data from the Swedish Twin Registry on twins in 3 samples (ages 15, 18 and 20-28 years). We had access to data for more than 16 000 twins (largest sample to date) and estimated the heritability at every age and also conducted longitudinal analyses on twins with data at ages 15 and 18. Our results showed that hoarding symptoms were heritable at all ages although the heritability decreased somewhat with age. Symptoms of hoarding were also moderately stable between ages 15 and 18, and this stability was largely due to genetic factors while non-shared environmental factors had a time-specific effect.
Follow the link below to access the publication: