This artifact includes the setup, data, and analysis for the experiment described in the article "Does Task Complexity Moderate the Benefits of Liveness? - A Controlled Experiment" published in the journal "The Art, Science, and Engineering of Programming" Volume 9. The artifact has the following structure: experiment-setup experiment-environment.zip: Archive including the fully configured Squeak/Smalltalk environment experiment-protocol.pdf: Full protocol for conducting the experiment system: Includes the base system used for the experiment without any seeded faults tasks task-descriptions.txt: The task descriptions of steps to reproduce and symptoms for the tasks used in the experiment patches: Patch files for all generated tasks infrastructure: Contains source code of the tools used for controlling tasks in the development environment questionnaire survey.dfglive.2023-01-06.xml: Questionnaire configuration for a SoSci survey server, includes demographics, experience, and skill questionnaire results data export-NN.zip: Each archive contains the raw data from one run starTrackData-NN: Contains the detailed event log experimentState.json: Contains the measurements and the final state for each task (completed, notStarted, etc.) skillTestResult-NN.json: Contains the score reached in the skill test task-X-NN.cs: The submitted patch for task X questionnaire data_dfglive-analysis.ods: Demographics and experience questionnaire results (gender column is redacted due to potential deanonymization) results of skill test are only available in graded form in the participant export files analysis analysis-r: Main analysis scripts main.R, main-contrast-based.R: Two versions of the main and moderation effect analysis using two different processes live-tools-usage-time.R: Main and moderation effect analysis on tool usage demographics.R: Analysis of demographics and rendering of charts analysis-tool-usage-correlation: Includes scripts to extract tool usage frequencies from the event logs. Assumes that export-NN.zip files are in the parent folder.