Substitution Heuristic on Proportional Tasks

Completed · Not applicable

Conditions studied: Proportional Reasoning, Substitution Heuristic

In brief

The goal of this clinical trial is to test whether or not adults use a substitution heuristic when reasoning about proportions. The main question it aims to answer is: Do adults use a substitution heuristic when judging non-symbolic proportions, leading them to answer an easier, yet incorrect question? Researchers will compare performance at baseline with one of two conditions in order to see if forced behavioral changes can change performance on the task. Participants will be asked to compare two images and judge which has the higher proportion of the target color. Each participant will also be assigned to one of two condition where they either receive a further incentive for correct selections or are required to use more time when making their calculations.

Key facts

Study ID

NCT06762366

Run by

Michelle Hurst, PhD

People needed

442

Starts

2024-12-13

Expected to finish

2026-03-15

Last updated by the study team

2026-06-05

Who can join

Age: 18 and older, up to 64. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Typically developing people within the target age range

You may not qualify if…

• Individuals with known developmental or cognitive disorders
• Participants must speak/read sufficient English to read and complete the informed consent document

Where it is running

• Rutgers Center for Cognitive Science — Piscataway, New Jersey, United States

Full record on ClinicalTrials.gov

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