Sound Estimation and Accuracy Task

NCT ID: NCT02271685

Last Updated: 2015-05-21

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

600 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-02-28

Study Completion Date

2015-05-31

Brief Summary

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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

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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.

Conditions

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Parkinson's Alzheimer Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

SCREENING

Blinding Strategy

SINGLE

Participants

Study Groups

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Overestimate Parkinson's

People are told that overestimates on the sound estimation task are associated with being healthy and having a low risk of Parkinson's disease, whereas those who are accurate are more likely to develop the disease later in life.

Group Type EXPERIMENTAL

Instructions about Overestimates

Intervention Type OTHER

Participants are told that overestimating the duration of sounds are associated with low disease risk.

Instructions about Parkinson's

Intervention Type OTHER

Participants are told that the task is about risk of Parkinson's disease.

Overestimate Alzheimers

People are told that overestimates on the sound estimation task are associated with being healthy and having a low risk of Alzheimers disease, whereas those who are accurate are more likely to develop the disease later in life.

Group Type EXPERIMENTAL

Instructions about Overestimates

Intervention Type OTHER

Participants are told that overestimating the duration of sounds are associated with low disease risk.

Instructions about Alzheimers

Intervention Type OTHER

Participants are told that the task is about risk of Alzheimers disease.

Underestimate Parkinson's

People are told that underestimates on the sound estimation task are associated with being healthy and having a low risk of Parkinson's disease, whereas those who are accurate are more likely to develop the disease later in life.

Group Type EXPERIMENTAL

Instructions about Parkinson's

Intervention Type OTHER

Participants are told that the task is about risk of Parkinson's disease.

Instructions about Underestimates

Intervention Type OTHER

Participants are told that underestimating the duration of sounds are associated with low disease risk.

Underestimate Alzheimers

People are told that underestimates on the sound estimation task are associated with being healthy and having a low risk of Alzheimers disease, whereas those who are accurate are more likely to develop the disease later in life.

Group Type EXPERIMENTAL

Instructions about Underestimates

Intervention Type OTHER

Participants are told that underestimating the duration of sounds are associated with low disease risk.

Instructions about Alzheimers

Intervention Type OTHER

Participants are told that the task is about risk of Alzheimers disease.

Interventions

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Instructions about Overestimates

Participants are told that overestimating the duration of sounds are associated with low disease risk.

Intervention Type OTHER

Instructions about Parkinson's

Participants are told that the task is about risk of Parkinson's disease.

Intervention Type OTHER

Instructions about Underestimates

Participants are told that underestimating the duration of sounds are associated with low disease risk.

Intervention Type OTHER

Instructions about Alzheimers

Participants are told that the task is about risk of Alzheimers disease.

Intervention Type OTHER

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Carnegie Mellon University

OTHER

Sponsor Role lead

Responsible Party

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Eric VanEpps

PhD Candidate

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Eric M VanEpps, MS

Role: PRINCIPAL_INVESTIGATOR

Carnegie Mellon University

Locations

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Carnegie Mellon University

Pittsburgh, Pennsylvania, United States

Site Status

Countries

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United States

Other Identifiers

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HS14-553

Identifier Type: -

Identifier Source: org_study_id

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