Findings on happiness in Bakker et al. (2020): study NL 2011

Publication
Author(s)Bakker, A.B.; Burger, M.; Oerlemans, W.; VanHaren, P.; Veenhoven, R.
TitleRaise of Happiness Following Raised Awareness of How Happy One Feels: A Follow-Up of Repeated Users of the Happiness Indicator Website
SourceInternational Journal of Applied Positive Psychology, 2020, online,
URLhttps://doi.org/10.1007/s41042-020-00032-w
Investigation
PublicReturning users of a happiness self-help website, Netherlands, 2011-2015
 User of the GeluksWijzer website: www.gelukswijzer.nl
Last assesment2015
Survey nameNL-GeluksWijzer
SampleNon-probability self-selected
 Participants were recruited using publicity in public media and social media campains. This study limits to participants who had visited the website at least twice and had used the HappinessDiary Overrepresentation of higher educated women
Respondents N =5411
Non ResponseNot available
AssesmentQuestionnaire: web
 Happiness self-help tool box
Happiness measure(s) used
Full textSelfreport on single question: How happy have you felt during the last month? 0 1 2 3 4 5 6 7 8 9 10 All response options indicated by both a number and a smily No verbal labels are used Preceded by the question 'How happy do you feel today?' (Both for focussing on affect and for avoiding mood bias)
ClassificationA-AOL-cm-sq-f-11-a
Author's labelhappiness
Page in publication9
RemarksEstimate of how happy one had felt over the last month Feeling of happiness 'today': M = 6,70 SD = 1,37
Finding used in
nation ranks		Yes
 On original range 0 - 10On range 0 - 10
Mean6.37
Standard deviation1.57

Correlational findings

Author's label Our subject description
Use of Happiness-Comparershow  Actual changes in happiness
Use of Happiness-Comparershow  Comparison with the happiness of similar people, also classified as above ↑
Use of Happiness-Comparershow  Insight, also classified as above ↑
Use of Happiness-Comparershow  Mood awareness training, also classified as above ↑
Use of Happiness-Comparershow  Multiple treatment moments, also classified as above ↑
Use of Happiness-Comparershow  No particular setting, recruitment on interest, also classified as above ↑
Use of Happiness-Comparershow  Online intervention, also classified as above ↑
Use of Happiness-Comparershow  Self-help, also classified as above ↑
Use of Happiness-Comparershow  Voluntary, unsolicited, also classified as above ↑
Use of Happiness-Diaryshow  Exercise
Use of Happiness-Diaryshow  Frequency of use, also classified as above ↑
Use of Happiness-Diaryshow  Happiness diary, also classified as above ↑
Use of Happiness-Diaryshow  Mood awareness training, also classified as above ↑
Use of Happiness-Diaryshow  Multiple treatment moments, also classified as above ↑
Use of Happiness-Diaryshow  No particular setting, recruitment on interest, also classified as above ↑
Use of Happiness-Diaryshow  Online intervention, also classified as above ↑
Use of Happiness-Diaryshow  Self-help, also classified as above ↑
Use of Happiness-Diaryshow  Voluntary, unsolicited, also classified as above ↑