RETRIEVAL FROM MEMORY OF DIETARY INFORMATION
RETRIEVAL FROM MEMORY OF DIETARY INFORMATION
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DOI：
10.1002/acp.2350050308
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发表时间：
1991-05-01
影响因子：
2.4
通讯作者：
MINGAY, DJ
中科院分区：
文献类型：
--
作者：
SMITH, AF;JOBE, JB;MINGAY, DJ
两项实验调查了受试者报告特定时期内饮食摄入量的准确性。在实验1中，受试者记录他们的饮食2或4周，并在记录期结束后0、2、4或6周返回进行记忆测试，该测试要求他们尝试报告在记录期间吃过或喝过的所有物品。报告的项目与记录的项目进行评分。随着保留间隔的增加，整体内存性能会下降。此外，报告 2 周的受试者的入侵率随着保留间隔长度的变化而急剧增加，而报告 4 周的受试者的入侵率在整个保留间隔长度上大致恒定，而报告 4 周的受试者的入侵率在整个保留间隔长度上大致恒定。相对于其他指示，鼓励受试者按食物组进行报告会提高入侵率，但不会增加报告的目标比例。在实验 2 中，受试者记录了两个不同时期的饮食摄入量，并在第二个时期结束时报告了两个时期的饮食摄入量。第二期报告的项目与该期间的记录比第一期的记录更加吻合，但第一期报告的项目没有这种差异。总而言之，这两个实验的结果表明，当受试者试图报告长期或遥远时期的摄入量时，他们依赖于对自己饮食的一般记忆。
Two experiments investigated the accuracy with which subjects report their dietary intake for specified periods. In Experiment 1, subjects recorded their diets for 2 or 4 weeks, and returned 0, 2, 4, or 6 weeks after the end of the recording period for a memory test which required that they attempt to report all items that they had eaten or drunk during the recording period. The reported items were scored against the recorded ones. Overall memory performance deteriorated as retention interval increased. In addition, the intrusion rates of subjects who reported for 2 weeks increased steeply as a function of retention interval length, whereas those of subjects who reported for 4 weeks were roughly constant across retention interval length, whereas those of subjects who reported for 4 weeks were roughly constant across retention intervals. Encouraging subjects to report by food groups elevated intrusion rates, relative to other instructions, without increasing the proportion of targets that was reported. In Experiment 2, subjects recorded their dietary intake for two separate periods, and reported for both periods at the end of the second. The items reported for the second period better matched the record for that period than the record for the first period, but there was no such difference for the items reported for the first period. Taken together, the results of the two experiments suggest that subjects rely on generic memory about their own diets when they attempt to report their intake for extended or remote periods.