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Log Who's Playing:* Psychophysiological Game Analysis Made Easy Through Event Logging

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Information about Log Who's Playing:* Psychophysiological Game Analysis Made Easy Through...
Entertainment

Published on November 20, 2008

Author: acagamic

Source: slideshare.net

Description

Psychophysiological game research faces the problem that for understanding the player experience, it needs to analyze game metrics and events with high temporal resolution and within the game context. This way greater understanding of gameplay and the player experience can be achieved with the use of physiological instrumentation. This is a presentation of a paper that presents a solution to recording in-game events and metrics, by sending out event byte codes through a parallel port to the physiological signal acquisition hardware. Thus, psychophysiological data can immediately be correlated with in-game data. By employing this system for psychophysiological game experiments, researchers will be able to analyze gameplay in greater detail in future studies.
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Log Who’s Playing: Psychophysiological Game Analysis Made Easy Through Event Logging Lennart Nacke, Craig Lindley, Sophie Stellmach Blekinge Institute of Technology, Sweden Department of Interaction and System Design Game and Media Arts Laboratory

Outline  Motivation for our work  Conceptual design  Automated game event logging – Details – A word about gaze logging  Conclusion and future work

Motivation  Understand user behavior by decoding events  Evaluation data accompanied by video – Qualitative data – Behavioral data  Improvement by adding even-related physiological data – Specific phasic response in event context  What makes gameplay fun?

Conceptual design  Meaningful events – In-game events  User-created  Pre-defined and triggered – Real-world events  Sensors (physiological, positional, etc.)  Video  Record at run-time speed of 3d game engine  Interface with physiological recording hardware – Parallel port (200 ms accuracy)  Easy integration into editing tools

IMPLEMENTED IN SOURCE SDK

Types of logging

Event-code examples 105: Pressing red button 55: Player fires a gun 21: Damage to smiling opposing NPC

Automated game logging  Transmission component – Interfacing class – Communication with physiological recording hardware  Event component – Common (level-independent)  Enemy is killed, etc. – Unique (level-dependent)  Player enters area, etc.  Dynamically assign unique events in editing tool CBaseEntity Event_Log Logging_Entity Private Input Output Data Functions Functions Members

Dynamically assigning events Screenshot showing the logging entities and manually defined output codes inside the Hammer editing tool for the Half-Life 2 Source SDK.

Correlation of Physiological Data to Events Physiological data is recorded together with real-time game events, allowing for automatic data clustering and analysis

Main benefit: time reduction for researcher  Data correlation is fully automated Experiment Data Analysis Preparation Correlation

A word about gaze logging  Automatically logs and identifies – Game objects – Graphical assets  Tobii 1750 (SDK) – Video-based – Corneal-reflection tracking  Logs – Object ID – Event ID – Time stamp – L+R gaze points (x,y)

Dissecting player experience  Surveys – Pre-game – (In-game) – Post-game  Physiological responses – Emotion – Cognition – Arousal  Visual attention – Gaze tracking  Game Metrics

Conclusion and future work  Event-logging enables detailed understanding – of game experience  Automatic data correlation saves analysis time  Studies using the system are ongoing  First results will be coming in shortly

Thank you kindly for listening! me Craig Sophie cld@bth.se slm@bth.se Lennart Nacke Find me at… Blekinge Institute of Technology Game and Media Arts Laboratory Karlshamn, Sweden Lennart.Nacke@bth.se http://gamescience.bth.se http://www.acagamic.com Download papers from: http://gamescience.bth.se/research/publications

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