MacKenzie J G, Foster T M, Temple W
Department of Psychology, University of Waikato, Hamilton, New Zealand.
Behav Processes. 1993 Oct;30(2):143-56. doi: 10.1016/0376-6357(93)90004-B.
The study attempted to assess the aversiveness of various sounds by allowing six hens to move to one (or other) end of a chamber to turn a sound off. A number of sounds at varying intensities were used, including intermittent and constant pure tones and a number of taped sounds. Sounds which some hens moved to turn off were high intensity tones (105-110 decibles measured on the A scale (dB(A))), and a number of taped sounds, both animal and machine generated, at 90 dB(A). The technique appears to be reliable in producing avoidance by individual subjects, and it resulted in differential responding to different intensities of the same sound. It seems likely that spending high percentages of the time with a sound off in this procedure indicates that the sound is aversive. Failure to turn a sound off does not, however, necessarily indicate non-aversiveness.
该研究试图通过让六只母鸡移动到一个隔间的一端（或另一端）来关闭声音，从而评估各种声音的厌恶程度。使用了多种强度不同的声音，包括间歇性和持续性纯音以及一些录制的声音。一些母鸡移动以关闭的声音是高强度音调（在A标度上测量为105 - 110分贝（dB(A)）），以及一些录制的声音，包括动物和机器发出的，强度为90 dB(A)。该技术在促使个体受试者产生回避行为方面似乎是可靠的，并且导致对同一声音的不同强度有不同反应。在此过程中，大部分时间关闭声音似乎表明该声音具有厌恶性质。然而，未能关闭声音并不一定表明该声音没有厌恶性质。
