Study Hermans et al. (2019): study NL 2016
- Public
- Office workers followed 3 years before and after placing plants in their workplace and controls, Netherlands 2016-2018
- Survey name
- Unnamed study
- Sample
- Respondents
- N = 119
- Non Response
- Assessment
-
Questionnaire: Conputer Assisted Web Interview (CAWI)
Workers received a questionnaire by e-mail at T1, T3, T4 and T5
Correlate
- Authors's Label
- Plants in office
- Our Classification
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-
- Remarks
- Three organizations participated in this study. In each organization an experimental and control workplace, which workplaces were similar with respect to size, sunlight, view on outside, use and equipment. The study in a third office was discontinued when plants were removed because of insects
- Operationalization
- 1; Plants placed in office (experimental)
0: No plants placed (control)
Observed Relation with Happiness
Change in negative affect insignificant.
Net effect on affect balance not reported but is likely to be positive
No significant differences in change between experimental and controls between T1 and T4 T5
Happiness assessed at
T1: Spring 2017: pretest
T2: 2 months: intervention
T3: 4 months: follow-up 1
T4: 6 months: follow-up 2
T5: 12 months: follow-up 3