participant

condition – experimental condition (1, CK_SS; 2, NCK_SS; 3, CK_CC; 4, NCK_CC)

common.k – common knowledge of type (1, common knowledge; 2, no common
knowledge)

type – type assigned to participant (0, Selfish; 1, Conditional cooperator)

group.1 – group (pair) participant belongs to in Phase 1

online.C - online contribution (sorting experiment)

normexp1 – „How much do you think each person should contribute to the
group project in the first round?“

normexp2 – „How do you think the other participants answered this
question?“

typeexp – „How do you think you contributed in the online exp compared to
the majority of participants in the experiment?“ (1 – less, 2 – same, 3 –
more, 4 – don't remember)

contribution.R1...20 – absolute contribution in round 1...20

percent.R1...20 – percent of endowment contributed to the common pool

group.2 - group (pair) participant belongs to in phase 2

expectation.R11...20 – participant's expectation of the partner's
contribution in this round

othersexpectation.R11...20 – partner's expectation of the participant's
contribution in this round

average.P1 – average contribution in Phase 1 (rounds 1 to 10)

average.P2 – average contribution in Phase 2 (rounds 11 to 20)

averageR1R9 – average contribution in rounds 1 to 9

pooled.contr.phase1 – average contribution in Phase 1 (can be removed,
redundant)