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篇名
时距估计中的锚定效应
並列篇名
Anchoring Effects in Duration Estimation
作者 张志杰彭春花黄希庭
中文摘要
采用两种时距估计方法,检验时距锚定值对时距估计的影响,并探讨了时距信息的心理表征方式。63名在校大学生参加了本次实验。实验1采用口头报告法,表明较大的时距锚定值(5s,5000ms)条件下,被试估对时距的估计值较大,而较小时距锚定值(1s,1000ms)条件下被试估计的时距值较小;语义相同但表述方式不同的锚定值(1s与1000ms,5s与5000ms)条件下的时距估计值没有显著差异。实验2采用产生法,进一步表明时距表述方式对产生时距没有显著影响。以上结果表明,时距估计受时距锚定值的影响,时距信息可能以语义形式进行表征,而不是简单的数字加单位的表层表征形式。
英文摘要
People’s duration estimation is not accurate and is influenced by many factors. Some researches suggest that the anchors concerning different time periods influence subjects’ predictions of future task duration; in other words, there is an anchoring effect in the process of predicting task duration. Longer time anchors lead to larger estimates, and shorter anchors lead to smaller estimates. All the past studies are centered on time predictions, but the present study was designed to investigate how time anchors affect subjects’ estimations of experienced durations, and to explore the impacting mechanism.Sixty-three undergraduates participated in the experiments. The participants in the two experiments were presented with time anchors having different values and units (e.g., 1 s, 1000 ms, 5 s, and 5000 ms). Thirty-nine participants volunteered to participate in experiment 1, which involved the use of the verbal estimation method. All the participants were asked to estimate the temporal durations under different anchor conditions (2 s, 4 s). Experiment 2 had 22 volunteer participants and involved the use of the production method. The participants were required to produce the durations corresponding to the time anchors. All the participants were tested individually on computers, and each session lasted for 20~30 minutes. An analysis of variance was then conducted after the data were logarithmically transformed.The experimental results revealed that the value of the time anchors significantly affected the participants’ duration estimates. When the participants were shown a longer time anchor, the duration estimations were larger, and when they were shown a shorter time anchor, the estimations were smaller. The same time anchors but with different units (e.g., 1s vs 1000 ms) did not affect participants’ duration estimations. When the anchors’ units were seconds, the estimations were not different from those when the anchors’ units were milliseconds.Two major conclusions are derived from this study. First, there is an anchoring effect in the duration estimations: long time anchors lead to larger duration estimates, and short time anchors lead to smaller duration estimates. Second, time anchors’ representation patterns do not influence the duration estimations. The duration estimations under the same time anchors but with different unit conditions do not differ. People’s representations of duration information may be semantic, rather than mere superficial representations as values plus units.
起訖頁 160-165
關鍵詞 语义表征SARA加工模型锚定效应时距估计semantic representationSARA process modelduration estimateanchoring effect
刊名 心理學報  
期數 200802 (40:2期)
出版單位 中國科學院心理研究所;中國心理學會
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