The Electronically Activated Recorder (EAR): a device for sampling naturalistic daily activities and conversations

Area of Science:

• Psychological Science
• Linguistic Research
• Behavioral Monitoring

Background:

• Assessing naturalistic behavior is challenging.
• Previous methods often involve intrusive observation or self-report, which can be biased.
• Objective, unobtrusive data collection is needed.

Purpose of the Study:

• To describe the Electronically Activated Recorder (EAR) device.
• To evaluate the preliminary psychometric properties of EAR data.
• To highlight the utility of EAR for capturing naturalistic behavior.

Main Methods:

• The Electronically Activated Recorder (EAR) was utilized.
• The device recorded 30-second audio samples every 12 minutes for 2-4 days.
• Participants wore the lightweight, portable device in their natural environment.

Main Results:

• The EAR system provides nonobtrusive acoustic data samples.
• Data captured reflect the language used and settings experienced by participants.
• Preliminary psychometric findings indicate EAR data accurately represent individuals' social, linguistic, and psychological lives.

Conclusions:

• The EAR is a viable tool for unobtrusively studying naturalistic behavior.
• EAR data offer a rich, objective record of participants' daily lives.
• A digital second-generation EAR system is now available, advancing this technology.