Non-PRO English to Italian Science Mathematics & Statistics statistics

DEFINITION: "A procedure for collecting purchase data and the media habits of consumers; it requires respondents to complete a written report (in a diary) of their behaviour. This is either collected by or mailed to a marketing research company weekly or monthly." --Dictionary of Business, Oxford University Press

CONTEXT: experimental subjects receive a diary [...]Every entry is accurately recorded according to a predetermined timeschedule, [...] The Diary Method enables subjects to create statements about the continuity and the regularity of certain behavioural patterns.

In the text there are also "diary data" and "diary studies"...

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