PROBLEM TO BE SOLVED: To record individual's article outdoor purchase information by making it speedy to gather and total data of the article purchase information. ;SOLUTION: When a radio terminal of an object person of research is connected to a research operation site in article purchase, a server receives purchase-time article purchase information sent from the radio terminal (S01) and stores the purchase-time article purchase information and a flag indicating a unconfirmed state in a article purchase table (S03). When a computer of the object person of research is connected to the research operation site, the server retrieves an article purchase information entry of the flag showing the unconfirmed state from the article purchase table, sends an article purchase input picture (S05), and stores supplementary article purchase information received from the computer in the article purchase table (S07). The server extracts an article purchase information entry as an object of research from the article purchase table (S09) and sends an attached questionnaire to the computer (S11). The server stores the received questionnaire answer (S13) and updates the flag of the article purchase information entry into a determined state (S15).;COPYRIGHT: (C)2003,JPO
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