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Blind Procedures

Blind Procedures

Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...

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Related Experiment Video

Updated: Jul 21, 2025

RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans

RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans

Published on: July 17, 2021

A Comparison of Baseline Procedures in Task Analyses.

Emma Grauerholz-Fisher¹, Timothy R Vollmer², Jonathan K Fernand³

¹Salve Regina University, Newport, RI, USA.

Behavior Modification

|July 27, 2023

Summary

This summary is machine-generated.

The multiple-opportunity probe (MOP) is recommended over the fixed-opportunity probe (FOP) for assessing baseline performance in chained tasks. MOP provides more accurate data for children with autism, unlike FOP which may suppress performance.

Keywords:

baseline chained task fixed-opportunity probe multiple-opportunity probe task analysis

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Last Updated: Jul 21, 2025

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Utilizing Electroencephalography Measurements for Comparison of Task-Specific Neural Efficiencies: Spatial Intelligence Tasks

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Published on: August 9, 2016

Area of Science:

Behavior Analysis
Developmental Psychology
Autism Spectrum Disorder Research

Background:

Assessing baseline performance in chained tasks is crucial for experimental control.
Existing methods like fixed-opportunity probe (FOP) and multiple-opportunity probe (MOP) may influence performance.
Concerns exist about how these probes affect baseline data interpretation.

Purpose of the Study:

To compare the fixed-opportunity probe (FOP) and multiple-opportunity probe (MOP) within a single group of participants.
To evaluate the impact of FOP and MOP on baseline performance for children with autism.
To determine the most accurate method for baseline assessment in chained tasks.

Main Methods:

A within-subject design was employed.
Participants included children diagnosed with autism spectrum disorder.
The study focused on daily living and self-care skills.

Main Results:

The multiple-opportunity probe (MOP) generally led to higher baseline performance compared to the fixed-opportunity probe (FOP).
For some participants, MOP resulted in skill acquisition before formal training.
FOP may potentially suppress baseline performance.

Conclusions:

The multiple-opportunity probe (MOP) is recommended for assessing baseline performance in chained tasks.
Using MOP helps ensure the most accurate data collection in clinical and research settings.
Clinicians and researchers should prioritize MOP to avoid potential FOP-induced performance suppression.