People’s cooperation preferences shift with experience of unreliable partners

Evidence

Sen refers to a third preference schedule, which he calls other-regarding (OR): … Thus someone might start with the OR preference schedule and, finding that he frequently got his second preference, become discouraged. — Diego Gambetta, Trust - Making and Breaking Cooperative…, 116

Categorization

• XREF: OR preferences as an alternative to the egoistic PD schedule prefigures the doctor’s wife’s other-regarding behavior surviving where others’ egoism has collapsed in Saramago.
• QUESTION: What exactly fills the truncated sentence (R2) when preferences ‘change under the impact of information about reliability’? Want to see the full formulation.