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Creator: Verhoeven, A.A.C., Adriaanse, M.A., De Ridder, D.T.D., De Vet, E., Fennis, B.M.
Title	Description
Reasons to Snack > Part 1	In March 2013, the LISS panel was presented the questionnaire “Consumption of snacks”. This questionnaire aims to examine the reasons for unhealthy snacking behavior.
Reasons to Snack > Part 2	In April 2013, the LISS panel was presented part 2 of the questionnaire “Consumption of snacks”. Besides repeating the Reasons to Snack Scale, the predictive validity of the scale is determined by measuring unhealthy snack consumption.

Creator: Kroese, Floor M., Adriaanse, M.A., Evers, Catharine, De Ridder, D.T.D.
Title	Description
Bedtime Procrastination: An Exploration of the ‘Who’, ‘What’ and ‘Why’	In the current study we aim to shed light on the prevalence of bedtime procrastination in the general population and to find out to what extent it is perceived as problematic. In addition, we aim to explore to what extent bedtime procrastination can be considered a typical self-regulation problem, and what are the most common reasons for people to stay up late. This project consists of two parts, in the second part people keep a diary in which bedtime behavior is assessed.
Bedtime Procrastination: An Exploration of the ‘Who’, ‘What’ and ‘Why’ > Part 1	In part 1 the LISS panel completed a questionnaire about bedtime procrastination.
Bedtime Procrastination: An Exploration of the ‘Who’, ‘What’ and ‘Why’ > Part 2	In part 2 people keep a diary in which bedtime behaviour is assessed.

Creator: Creighton, M.J., Lilleoja, L., Schmidt, P., and Zavala-Rojas, D.
Title	Description
LISS panel > List experiment on social desirability bias in attitudes towards immigration	This study investigates to what extent social desirability bias affects direct questions typically used to measure attitudes towards immigration, using a list experiment or the ‘item count technique’.

Creator: Johan van Wilsem (Leiden University), Andrea Donker (University of Applied Sciences Utrecht), Joanne van der Leun (Leiden University)
Title	Description
LISS panel > Conventional and Computer Crime Victimization > Wave 2	In February 2010, the LISS panel completed a questionnaire on computer crime victimization.This is the second wave of the questionnaire, wave 1 is administered in 2008.
LISS panel > Conventional and Computer Crime Victimization > Wave 4	The survey focuses on experiences of digital crime victimization among the general public. It aims to estimate prevalence of computer crime victimization, its social distribution, the relationship between conventional and computer crime victimization, and individual development in victimization and its risk factors. This is the fourth wave of the questionnaire, wave 1 is administered in 2008, wave 2 in 2010 and wave 3 in 2012.
LISS panel > Conventional and Computer Crime Victimization > Wave 5	The survey focuses on experiences of digital crime victimization among the general public. It aims to estimate prevalence of computer crime victimization, its social distribution, the relationship between conventional and computer crime victimization, and individual development in victimization and its risk factors. This is the fifth wave of the questionnaire, wave 1 is administered in 2008, wave 2 in 2010, wave 3 in 2012 and wave 4 in 2014.

Creator: Kokx, J., Andrea, H.
Title	Description
LISS panel > Psychometric Properties and Factor Structure of the SIPP-SF Questionnaire	This study aims to test whether the SIPP-SF scales have good validity, and whether five different domains can be confirmed in this questionnaire. Furthermore, it is hypothed that the SIPP-SF will have good test-retest reliability, and will be sufficiently sensitive to mid- and long-term adaptational changes in personality pathology.

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