Validity of two methods to assess computer use: Self-report by questionnaire and computer use software

Learning and living technologies: a longitudinal study of first‐year students’ frequency and competence in the use of ICT

“…Self-reported questionnaire data on learning experiences particularly in terms of ICT use do not always yield reliable results (Douwes, de Krakera, & Blattera, 2007), so data from other qualitative (interviews, observations etc.) and quantitative (e.g.…”

Risk factors for generally reduced productivity—a prospective cohort study of young adults with neck or upper-extremity musculoskeletal symptoms

“…Allen & Bunn (66) found that self-reported measures of productivity performed well in two tests of validity. Stock et al (67) also established good validity for workers' self-reported physical work demands in a review, for example, the duration of the use of visual display terminals, in contrast to Douwes et al (68), who found an overestimation.…”

Is peak exposure to computer use a risk factor for neck and upper-extremity symptoms?

“…The threshold value reflects the use of the keyboard or mouse, reading from the screen and performing combinations of these activities. The value was based on previous studies that found that the average duration of total computer use based on WorkPace estimates was within 10% of the average duration of total computer use Richter et al based on systematic observation (17,18). The NCT for calculating a period of mouse use was 5 seconds and 2.5 seconds for keyboard use.…”