We have described an automatic apparatus for avoidance conditioning. The advantages of the apparatus are as follows: (a) It is extremely easy to build. (b) The cost is low depending upon the type of timing units one uses. (c) The programming of the stimulus parameters is completely flexible. (d) The apparatus switches automatically from conditioning into extinction. (e) This apparatus has been in use for 4 years and has been proved to be very efficient in its programming reliability.
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