Abstract
An easily constructed, low-cost, portable device is described for observational recording in field studies, or for stimulus programming in the laboratory. The system uses phase-locked loop integrated circuits for recording events in real-time. Multiple events can be simultaneously recorded on a single track of audio cassette tape and subsequently decoded using the same circuit.
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Magyar, R.L., Fitzsimmons, J.R. A multichannel, portable, “real-time” event encoder-decoder for laboratory and field experiments. Behavior Research Methods & Instrumentation 11, 47–50 (1979). https://doi.org/10.3758/BF03205432
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DOI: https://doi.org/10.3758/BF03205432