Journal of Official Statistics, Vol.6, No.4, 1990. pp. 411419

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Reliability and Validity of Time Budget Data: Children's Activities Outside School

Two methods of collecting time use data are compared. A time budget interview study designed to collect information about young children's educational activities outside school is described. Non-response was low, with the telephone used for three quarters of the contacts. Variance components for the different levels of the design were estimated using a maximum likelihood approach, both for continuous and for binary data. Estimates of moderate reliability were obtained for three contacts per child for the amount of time spent in an activity. The validity of the time budget estimates was probably higher than for stylized estimates obtained from the same respondents by direct questioning.

Time budgets; reliability; validity; variance components; telephone surveys; non-response.

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