Table 1 Summary of our hypotheses and findings.

From: Assessing the effects of pandemic risk on cooperation and social norms using a before-after Covid-19 comparison in two long-term experiments

Hypotheses

Results

Contribution and probability of reaching the threshold

H1

Contributions will be higher in Wave 2

Not supported

H2

Probability of reaching the threshold will be higher in Wave 2

Not supported

Social norms: contents and strength

H3

Average empirical expectations will be higher in Wave 2

Not supported

H4

Average normative expectations will be higher in Wave 2

Not supported

H5

Strength of group-level social norms will be higher in Wave 2

Supported

Behavioural types

H6a

Increasing normative expectations will increase contributions

Supported

H6b

Increasing empirical expectations will decrease contributions for some subjects and increase it for others

Supported

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