Reading focus
Syllabus: How Do Cultural Norms and Institutions Organize Behavior?
Compare the case for historical assignment with the later recruitment of farmers and descendants, keeping the different task results separate.
Why you’re reading it. Evaluate a proposed source of cultural variation within a shared national and administrative context.
A question to consider. What additional comparison would help distinguish coordination around irrigation from another difference between these two farms?
Why this reading
Talhelm and Dong compare two nearby Chinese state farms whose histories help address self-selection into rice and wheat agriculture. The design turns an ecological explanation of cultural differences into a question about assignment, recruitment and the experiences that separate the settings.
Before you read
A quasi-experiment uses circumstances that may approximate random assignment without a researcher conducting that assignment. Historical placement on a farm differs from random recruitment into a later study. Matching adjusts measured differences between samples; it cannot guarantee that unmeasured differences disappear.
Read for
- Evaluate the historical evidence about assignment alongside the recruitment of current farmers and descendants.
- Compare the family and friend drawing tasks, hypothetical loyalty decisions and categorization task, including weaker results and changes made to measures.
Consider afterwards
- What evidence would distinguish an effect of farming coordination from another enduring difference between the two farms?
- Why does a hypothetical preference for a friend over a stranger not establish greater generosity toward everyone?
Editorial context
The study recruited 234 people from two farms; most grew up there, while a minority had been assigned after childhood. Recruitment was not a probability sample, and the study was not preregistered. Historical records and matching strengthen the comparison, but two sites cannot isolate all features of agriculture or establish a general cultural law. The family drawing contrast was supported while the corresponding friend contrast was not statistically clear. “Wheat” also stands for a broader dryland-crop setting. These results should be interpreted through the particular tasks and institutional histories, rather than as fixed traits of all rice- or wheat-growing populations.