Related Experiment Video
Updated: Sep 19, 2026

Methods to Test Visual Attention Online
Published on: February 19, 2015
The integrity of Web-delivered experiments: can you trust the data?
K O McGraw1, M D Tew, J E Williams
1Department of Psychology, University of Mississippi, University, MS 38677, USA. pymcgraw@olemiss.edu
Abstract:
Data from Web-delivered experiments conducted in browsers by remote users of PsychExperiments, a public on-line psychology laboratory, reveal experiment effects that mirror lab-based findings, even for experiments that require nearly millisecond accuracy of displays and responses. Textbook results are obtained not just for within-subjects effects, but for between-subjects effects as well. These results suggest that existing technology is adequate to permit Web delivery of many cognitive and social psychological experiments and that the added noise created by having participants in different settings using different computers is easily compensated for by the sample sizes achievable with Web delivery.
More Related Videos
Related Concept Videos
Ethics in Research
Reliability and Validity
Data Collection by Experiments
An example of the experimental method is a public clinical trial...
What is an Experiment?
Controls in Experiments
Data Validation
Key parameters for method validation include:

