Empirically, a lack of validated measures of technology use adds to this imprecision.11 Most work relies on self-reports of technology use. Self-reports, however, have been shown to be imprecise and of low validity because they correlate poorly with objective measures of technology use.12 In the case of smartphones, self-reported duration of use correlated moderately, at best, with objectively logged use.13 These findings are mirrored when comparing self-reports of general internet use with objectively measured use.14 Taken together, in addition to losing precision by subsuming all types of technology use under one behavioral category, the measurement of this category contributes to a lack of precision. To gain precision, it is necessary that we look at effects for different types of use, ideally objectively measured