Clinical trial NCT02271685: Sound Estimation and Accuracy Task
Official title: Estimation and Accuracy in Sound Task Perceived to be Medically Diagnostic
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Parkinson's
Alzheimer Disease
Keywords: Diagnostic Information
Risk Perception
Lead sponsor: Carnegie Mellon University
Sponsor class: OTHER
First posted: 2014-10-22
Enrollment: 600
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: FACTORIAL
Primary purpose: SCREENING

Brief summary: Participants will be assigned to complete computerized estimation tasks for which there is a component of accuracy, such as estimating the duration of sounds. Participants will be told that the task is used as an early diagnostic tool to detect those at risk for a medical condition (e.g., Parkinson's disease, Alzheimer's disease). Instructions will be given to participants telling them that accuracy on the task is associated with the disease, whereas those who are not at risk of the disease tend to either overestimate or underestimate the duration of the sounds. The investigators examine whether such instructions about the purpose and diagnosticity of the tasks biases participants' responses to the tasks, leading them to purposefully be more inaccurate in their estimates.

Detailed description: Participants will be assigned to complete computerized tasks for which there is a component of accuracy, such as estimating the length, in time, of sounds. Participants will be told that the task is used as an early diagnostic tool to detect those at risk for a medical condition (e.g., Parkinson's disease, Alzheimer's disease). Instructions will be given to participants telling them that accuracy on the task is associated with the disease in question, whereas those who are not at risk of the disease tend to either overestimate or underestimate the duration of the sounds. The investigators examine whether such instructions about the purpose and diagnosticity of the tasks biases participants' responses to the tasks. The investigators collect additional survey measures as statistical controls and potential explanatory variables for variation in the performance on the tasks, and also test whether financial incentives for accuracy on these tasks improve the accuracy of responses to these tasks.

Following the task, all participants will be told that the tasks used are actually NOT diagnostic of the diseases in question, and that deception was used to learn how people respond to instructions about how a task can be used for diagnostic purposes.

Eligibility criteria: Inclusion Criteria:

* 18 or older
* Able to access tasks on computer
* Able to hear sounds played on computer

Exclusion Criteria:

* Computer speakers absent or not functioning

Primary outcomes:
measure: Time Estimate
timeFrame: 30 minutes
Secondary outcomes:
measure: Time Generation
timeFrame: 30 minutes
measure: Perceived Risk of Disease
timeFrame: 30 minutes
Other outcomes:
Locations:
city: Pittsburgh
country: United States
facility: Carnegie Mellon University
state: Pennsylvania
Study officials:
affiliation: Carnegie Mellon University
name: Eric M VanEpps, MS
role: PRINCIPAL_INVESTIGATOR
References: