Introduction

The GSR meter, or galvanic skin response meter, is a biofeedback monitoring device designed to detect a person's mental state or change of state.

This type of device can be used one to one, with the person so monitored holding one electrode in each hand while the facilitator operates the meter, or solo (as in certain types of self-development counselling), with the person using the meter on himself holding suitably insulated electrodes in one hand.

There are many types of GSR meters on the market today – Ability Meter, Clarity Meter, Psychotechnics GSR Meter, Phoenix Meter and Mindwalker Meter are just a few such models which are available. Computer-based versions, such as the Mark 3.0 and Mark 4.0 Mindwalker meters, have also been developed.

Unlike classical biofeedback where the user is trained to produce a particular desired response, the GSR meter when used as a counseling or study aid is used purely for diagnostic purposes. It assists the facilitator in locating where the area of difficulty is, determining the efficacy of the technique being used or whether a different process or method may be more appropriate in solving the difficulty, and knowing when a desirable outcome has been achieved signalizing a suitable point to end off.

The GSR meter has been widely used for experimental and leading-edge psychotherapy and personal development purposes, although it remains ignored by mainstream therapists.

This paper does not attempt to describe the various practices which use the meter as a diagnostic tool in their various processes and techniques. The focus of this paper instead is to outline the development of the GSR meter, what it measures, and the interpretation of various types of reads and associated phenomena.

This paper was compiled from the content private conversations, emails, online discussions and the author's own personal knowledge, training and experience. Publications have been mentioned where appropriate in the text only for the sake of historical completeness.

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