Optimizing Dimensions of Reinforcement

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

RECRUITING

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-07

Study Completion Date

2026-08-31

Brief Summary

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This study is designed to better understand how certain features of reinforcement affect learning and motivation in individuals with intellectual and developmental disabilities (IDD). Participants will take part in a series of structured teaching sessions that involve simple tasks and reward-based feedback. By changing the timing and amount of rewards, we aim to learn how these factors influence the ability to acquire and maintain new skills. This information may help improve behavioral interventions for individuals with IDD in the future. The study does not involve medications or procedures intended to change participants' health status.

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Detailed Description

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This study examines how key parameters of reinforcement-specifically the timing and amount of rewards-affect learning, motivation, and performance in individuals with intellectual and developmental disabilities (IDD). The experimental design is informed by the Mathematical Principles of Reinforcement (MPR), a quantitative framework for understanding the relationship between reinforcement schedules and behavior.

Participants will complete tabletop tasks in a controlled setting. Tasks are designed to be simple and accessible, such as pressing a button or selecting a picture, and correct responses will earn small rewards. Across sessions, we will systematically vary reinforcement parameters, including inter-reinforcement interval and reinforcer magnitude, to evaluate their effects on response rate, accuracy, and persistence.

This is a Basic Experimental Studies with Humans (BESH) clinical trial, meaning the interventions are intended to understand fundamental behavioral processes, not to produce direct clinical benefit. The data will be analyzed using statistical models derived from MPR to identify which reinforcement dimensions are most effective in maintaining high rates of responding. The results may help refine behavior intervention strategies for individuals with IDD by providing an evidence-based understanding of how to optimize reinforcement delivery.

Conditions

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Intellectual Disabilities (F70-F79) Autism

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

All participants receive the same sequence of experimental conditions. The design allows for within-subject comparisons across phases of the intervention to evaluate changes in operant responding under different schedule arrangements.

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Single-Arm: Manipulation of Reinforcement Schedules

Participants will complete an operant conditioning task in which reinforcement schedules are systematically manipulated to evaluate changes in response patterns. All participants receive the same sequence of experimental conditions, which involve varying the availability and distribution of points exchangeable for preferred items or activities. No health-related treatment is provided; the procedures are designed to examine basic behavioral processes related to reinforcement dynamics.

Group Type EXPERIMENTAL

Operant Conditioning Tasks with Reinforcement Manipulations

Intervention Type BEHAVIORAL

This behavioral intervention involves structured operant conditioning tasks. Reinforcement parameters (e.g., schedule arrangement, magnitude, and probability) are systematically manipulated to evaluate their effects on behavioral allocation. The primary objective is to assess how variations in reinforcement contingencies influence choice patterns. The procedures are designed to examine fundamental behavioral processes rather than to provide therapeutic benefit.

Interventions

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Operant Conditioning Tasks with Reinforcement Manipulations

This behavioral intervention involves structured operant conditioning tasks. Reinforcement parameters (e.g., schedule arrangement, magnitude, and probability) are systematically manipulated to evaluate their effects on behavioral allocation. The primary objective is to assess how variations in reinforcement contingencies influence choice patterns. The procedures are designed to examine fundamental behavioral processes rather than to provide therapeutic benefit.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

At least 6 years of age

Documented neurodevelopmental condition

Engagement in problem behavior (e.g., aggression, self-injury, property destruction) that can be measured during study sessions

Ability to follow simple instructions

Ability to participate in tabletop choice-based tasks

Availability to complete all scheduled study sessions

Provision of informed consent by participant or legally authorized representative

Exclusion Criteria

Severe sensory or motor impairments that would prevent participation in tabletop tasks

Current or recent participation (within the past 30 days) in another interventional behavioral research study that could interfere with study outcomes

Medical or behavioral conditions judged by investigators to pose a safety risk or interfere with data collection

Minimum Eligible Age

6 Years

Maximum Eligible Age

17 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No