The purpose of this study is to understand the neural mechanisms of decision making in hoarding disorder.

Hoarding disorder is a common and disabling disorder that represents a significant public health problem. This study aims to build on current research on decision making by examining these processes in hoarding disorder.

Identify inclusion criteria.

Inclusion criteria for participants diagnosed with HD:

1. ages 18-70
2. primary diagnosis of hoarding disorder
3. sufficient severity of hoarding symptoms
4. stable on psychotropic medications for 1 month prior to study enrollment
5. capacity to provide informed consent
6. ability to tolerate clinical study procedures

Inclusion criteria for healthy control participants:

1. ages 18-70
2. capacity to provide informed consent

Identify exclusion criteria.

Exclusion criteria for participants with HD:

1. psychiatric or medical conditions that make participation unsafe
2. pregnant or nursing females
3. concurrent use of any medications that might increase the risk of participation (e.g. drug interactions)
4. presence of metallic device or dental braces

Exclusion criteria for healthy control participants:

1. any current or lifetime psychiatric diagnosis
2. current or past use of psychotropic medication
3. pregnant or nursing females
4. major medical or neurological problem
5. presence of metallic device or dental braces

Individuals with Hoarding Disorder and Healthy Participants