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Studies of Human Inference Using On-line Testing
Who can join
Ages 18 and older · All sexes · Healthy volunteers welcome
Full eligibility criteria
Inclusion Criteria: * Adult Prolific participants who have a 95% approval rating and achieve a minimum score of 80% on our pre-test, * Speak fluent English * Are in the US. Exclusion Criteria: * None
About the study
The investigators will record behavioral responses from human participants on crowdsourcing platform Prolific to identify the decision strategies humans apply short-term, long-term, and multi timescale (across both timescales) inference tasks. Participants will perform a flexible decision-making task (described in Research Strategy Aim 1) in which subjects must determine which of two locations a series of evidence (package drops) came from. Subjects must 1) report the current location, 2) predict the next location. The investigators will record these responses, the number (and sequence) of evidence, and the response time (time from the end of trial until the response) for each trial. Subjects will perform all blocks (parameters and number of blocks to be determined by inference model development and testing prior to task development) so that we can compare responses at each timescale. Since participants participate voluntarily for small sums of money (around $12/ hour based on duration of task) and the investigators' previous studies have collected over 200 subjects in a matter of days, they will aim to record behavioral data from 1000 subjects. This number allows them to address the broad range of subject variability expected using Bayesian statistical methods such as Bayes factors.
What is being tested
- psychophysics (behavioral)
Sponsor: University of Colorado, Boulder · Participants: 500 · Started: Feb 15, 2025
Contact the study team
- Tahra Eissa · Phone: (303) 492-6974
Official record on ClinicalTrials.gov — NCT05848752
Locations in the U.S.
| Colorado | University of Colorado Boulder, Boulder |
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.