Should taste-aversion learning experiments control duration or volume of drinking on the training day?
Tóm tắt
It has been reported that increases in volume drunk of a solution, prior to poisoning, lead to greater learned aversions. However, this effect may be due totally or partially to differences in time spent drinking rather than to amount drunk. When duration of drinking is held constant, rats differ spontaneously in how much of a solution they drink. In 29 experimental groups, varying in procedural details, the correlation between amount drunk on the training day and percent preference for the solution on the test day (the opposite of aversion) was positive in 16 cases, negative in 13, and usually low. Regardless of whether volume drunk affects taste-aversion learning under some conditions, evidently it is sufficient to control duration of drinking rather than volume, since the spontaneously occurring variations in volume have only slight, if any, effects on the individual differences in learned aversion.
Tài liệu tham khảo
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