A comparison of recall and diary food expenditure data
研究同一家庭回忆法和日记法记录的食品支出数据，发现回忆法存在较大测量误差且非经典误差，但日记法本身也不完美。
Recall food expenditure data, which is the basis of a great deal of empirical work, is believed to suffer from considerable measurement error. Diary records are believed to be more accurate. We study an unusual data set that collects recall and diary data from the same households and so allows a direct comparison of the two methods of data collection. The diary data imply measurement errors in recall food expenditure data that are substantial, and which do not have the properties of classical measurement error. However, we also present evidence that the diary measures are themselves imperfect.