Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Masking and Demasking Agents

Masking and Demasking Agents

EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...

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...

Blinding

Blinding

Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

National survey highlights worsening primary care access.

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne·2023

Same author

Ontario, Quebec and Alberta lead record family medicine residency vacancies.

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne·2023

Same author

What's the status of medical assistance in dying in Canada?

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne·2023

Same author

Resignations at Canada's drug pricing panel raise independence questions.

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne·2023

Same author

Overworked health workers are "past the point of exhaustion".

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne·2023

Same author

Resuscitating the doctors' lounge.

CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne·2023

Search research articles

Related Experiment Video

Updated: Sep 23, 2025

Testing Tactile Masking between the Forearms

Testing Tactile Masking between the Forearms

Published on: February 10, 2016

Is one-way masking enough?

¹CMAJ.

CMAJ : Canadian Medical Association Journal = Journal De L'Association Medicale Canadienne

|May 16, 2022

Summary

No abstract available in PubMed .

More Related Videos

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Published on: January 23, 2017

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019

Related Experiment Videos

Last Updated: Sep 23, 2025

Testing Tactile Masking between the Forearms

Testing Tactile Masking between the Forearms

Published on: February 10, 2016

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses

Published on: January 23, 2017

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity

Published on: March 18, 2019