McAbee T A, Cafferty T P
Am J Community Psychol. 1982 Dec;10(6):723-38.
Public service announcements (PSAs) aired by local radio or television stations may be useful to human service agencies as a mechanism to reach potential clients during periods of low service demand. To examine the usefulness of PSAs for this purpose, a series of PSAs were videotaped for three aging-service agencies and aired by a television station during a 6-week period. The three agencies recorded the incoming demand for services received each day before and during the intervention period. The data were tested by a multiple-group interrupted time-series analysis. The results of the analysis indicated that for all three agencies the PSAs were effective for increasing the number of service inquiries received from nonclients over the telephone numbers publicized in the PSAs. At one of the agencies, the number of new clients increased significantly when the PSAs were broadcasted.
当地广播电台或电视台播放的公益广告（PSAs），对于人类服务机构而言可能是一种有用的工具，能在服务需求较低的时期接触到潜在客户。为了检验公益广告在此方面的效用，为三家老年服务机构录制了一系列公益广告，并由一家电视台在为期6周的时间里进行播放。这三家机构记录了干预期之前和期间每天收到的服务需求。数据通过多组中断时间序列分析进行检验。分析结果表明，对于所有三家机构来说，公益广告有效地增加了通过公益广告中公布的电话号码从非客户那里收到的服务咨询数量。在其中一家机构，播放公益广告时新客户数量显著增加。
