Alzheimer Disease Clinical Trial
Official title:
Estimation and Accuracy in Sound Task Perceived to be Medically Diagnostic
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.
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.
;
Allocation: Randomized, Intervention Model: Factorial Assignment, Masking: Single Blind (Subject), Primary Purpose: Screening
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