DATA AVAILABILITY STATEMENTS Statement: Data is available on
the University of Pretoria Figshare site. The DOI is
10.25403/UPresearchdata.19463492
SUPPLEMENTARY MATERIAL : S1 Table. Details of responses to categorical predictor variables.
https://doi.org/10.1371/journal.pone.0275969.s001
S2 Table. Regressions using Tobit and logit models for behaviour.
https://doi.org/10.1371/journal.pone.0275969.s002
S3 Table. Comparing impacts of different measures using Tobit and OLS models.
https://doi.org/10.1371/journal.pone.0275969.s003
S1 Questionnaire. Informed consent and questionnaire.
https://doi.org/10.1371/journal.pone.0275969.s004