Time-use researchers are typically interested in the time use of individuals, but time use data are samples of person-days. Given day-to-day variation in how people spend their time, this distinction is analytically important. We examine the conditions necessary to make inferences about the time...

A major criticism of the American Time Use Survey (ATUS) is that, with the exception of childcare, the survey does not systematically collect information about activities respondents did while they were doing something else. The ATUS focuses on collecting information about respondents' main (or...