| 摘要 |
A device whereby the wearer receives a succession of prompts on a random interval schedule of reinforcement when activated by a corresponding succession of user inputs comprising: push of input push button, switch to determine if input is valid or invalid, means to activate random number generator, means to activate decrement, switch to determine completion or non-completion of decrement, output of one pulse, push of input push button, switch to determine if input is valid or invalid, step timer, switch to determine if invalid input push button occurred within ten seconds of output of one pulse, a push of input push button, switch to determine if input is valid or invalid, step timer, switch to determine if invalid input push button occurred within ten seconds of push of input push button, means to activate random number generator, means to activate decrement, switch to determine completion or non-completion of decrement, and output of two pulses.
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