title: Hoarders Only Discount Consumables and Are More Patient for Money.
abstract: Individuals with hoarding disorder (HD) excessively acquire and retain goods while also exhibiting characteristics of impulsivity and addiction. However, HD individuals do not always perform impulsively in experiments, they do not appear interested in money, and they exhibit many features of risk-aversion and future-planning. To examine impulsivity in HD, we compared validated community participants high and low in hoarding tendencies on questionnaire measures of hoarding and impulsivity as well as a standard experimental measure of impulsivity (intertemporal discounting) that was modified to compare decisions about money, pens, and snacks. Common discounting effects were replicated. Compared to the low hoarding group, the high hoarding group was more impatient for consumables (pens and snacks) but they were more patient for money. This increased patience for money in high hoarding individuals is in contrast to all other studies on discounting in disordered populations, but consistent with the phenomenology of HD. HD does not appear to be driven by a fundamental inability to wait, but rather a specific, potent desire for consumable rewards.
authors.affiliation: Department of Psychology, University of Michigan, Ann Arbor MI, USA.
authors.forename: Brian D
authors.initials: BD
authors.lastname: Vickers
authors.affiliation: Department of Psychology, University of Michigan, Ann Arbor MI, USA.
authors.forename: Stephanie D
authors.initials: SD
authors.lastname: Preston
authors.affiliation: Department of Psychology, University of Michigan, Ann Arbor MI, USA.
authors.forename: Richard
authors.initials: R
authors.lastname: Gonzalez
authors.affiliation: Department of Psychology, University of Michigan, Ann Arbor MI, USA.
authors.forename: Andrea M
authors.initials: AM
authors.lastname: Angott
keywords: addiction; consumption; discounting; hoarding disorder; impulsivity