Items where Author is "Wittrock, J."
Aizpurúa, E. 
ORCID: 0000-0001-7045-5535, Park, K. H., Avery, M. , Wittrock, J., Muilenburg, R. & Losch, M. E. (2018).
The Impact of Advance Letters on Cellphone Response in a Statewide Dual-Frame Survey.
Survey Practice, 11(2),
doi: 10.29115/sp-2018-0011
Aizpurúa, E. ORCID: 0000-0001-7045-5535, Heiden, E. O., Park, K. H. , Wittrock, J. & Losch, M. E. (2018).
Investigating Respondent Multitasking and Distraction Using Self-reports and Interviewers’ Observations in a Dual-frame Telephone Survey.
Survey Insights: Methods from the Field,
doi: 10.13094/SMIF-2018-00006
Aizpurúa, E. ORCID: 0000-0001-7045-5535, Park, K. H., Heiden, E. O. , Wittrock, J. & Losch, M. E. (2018).
Predictors of Multitasking and its Impact on Data Quality: Lessons from a Statewide Dual-frame Telephone Survey.
Survey Practice, 11(2),
pp. 1-15.
doi: 10.29115/sp-2018-0025