Schnelle J F, Kirchner R E, Galbaugh F, Domash M, Carr A, Larson L
J Appl Behav Anal. 1979 Winter;12(4):615-23. doi: 10.1901/jaba.1979.12-615.
An armed robbery alarm system was implemented in 48 different stores in two separate geographical areas for 6 months and 12 months, respectively. The alarms were placed in the two separate areas at different times and all alarms were eventually removed. Thus, multiple baseline and reversal strategies were used to evaluate program impact. A device planted in a cash drawer was triggered whenever "bait" money was removed from the drawer sending an alarm signal directly to police cars and headquarters. On-scene apprehensions of armed robbers within target stores were greatly increased even though the armed robbery systems did not deter robbery incidents nor influence the court disposition of the cases. There was also no crime deterrence, crime displacement, or increased apprehensions in either the immediate neighborhoods of target stores or on a city-wide basis. The cost effectiveness of the program was calculated to be poor even though the program is being maintained because of the absence of an alternative robbery apprehension technology.
一个武装抢劫报警系统分别在两个不同地理区域的48家不同商店中实施，实施时间分别为6个月和12个月。警报器在两个不同区域于不同时间放置，且所有警报器最终都被拆除。因此，采用了多重基线和反转策略来评估该项目的影响。每当从现金抽屉中拿走“诱饵”钱时，安装在现金抽屉里的一个装置就会触发，直接向警车和总部发送警报信号。尽管武装抢劫系统既没有阻止抢劫事件发生，也没有影响案件的法庭处理，但目标商店内武装抢劫者的现场逮捕率大幅提高。在目标商店的紧邻区域或全市范围内，也没有出现犯罪威慑、犯罪转移或逮捕增加的情况。尽管由于缺乏替代的抢劫逮捕技术该项目仍在维持，但经计算该项目的成本效益很差。
