TY - JOUR
AU1 - Millenson, J. R.
AB -  NUMBER 5 SEPTEMBER, 1965 AN INEXPENSIVE GEIGER GATE FOR CONTROLLING PROBABILITIES OF EVENTS J. R. MILLENSON CARNEGIE INSTITUTE OF TECHNOLOGY1 A previous communication (Millenson, 1963) described an apparatus for experimentally regulating probability of occurrence of various environmental events in relation to time or behavior. That apparatus made use of the near perfect random character of natural radioactive decay. A geiger counter tube was connected to an amplifier and pulse shaping circuit with a relay output whose contacts provided a probabilistic gate for other pulses (response inputs, reinforcement assignments, electric shocks, etc.) such that the probability of their passing the gate was proportional to the counting rate of the geiger tube. The counting rate was remotely controlled by varying the distance of a Cobalt6° source from the geiger tube face. That method of controlling event probability has proved successful in several experimental settings. (For theory of operation, calibration curves, and applications see Millenson, 1963, 1964.) An important drawback, however, is the relative expense and complexity of the geiger counter amplifier circuit (Clark and Hull, 1965). Recently, an inexpensive but reliable, selfcontained geiger counter designed for amateur uranium prospectors has appeared on the market. This counter, in conjunction with a 
TI - AN INEXPENSIVE GEIGER GATE FOR CONTROLLING PROBABILITIES OF EVENTS
JF - Journal of the Experimental Analysis of Behavior
DO - 10.1901/jeab.1965.8-345
DA - 1965-09-01
UR - https://www.deepdyve.com/lp/wiley/an-inexpensive-geiger-gate-for-controlling-probabilities-of-events-nLci3uAWrQ
SP - 345
VL - 8
IS - 5
DP - DeepDyve
ER -