, 4 tweets, 1 min read Read on Twitter
Happy to share a new working paper with Philip Dawid and Monica Musio on when you can use information on causal processes to make claims about "causes of effects"

(is Y due to X? / process tracing / causal attribution)

arxiv.org/abs/1907.00399

Highlights:

1/n
* Experiments focus on treatment effects but we often care about whether an outcome is due to a cause
* That's a harder question and answer usually not identified by experimental data
* But don't obsess about identification: you can learn lots even if estimands are not identified
* Knowledge of mediation processes can tighten bounds even if you cannot observe the mediators.

But:

1 Getting arbitrarily "close" to a causal process does not render causal effects observable

2 Process data better for disconfirming causal relations than for confirming them
3. Max learning arises from short processes (when X is a necessary condition for a sufficient condit'n for Y)

4. Understanding conditional fx can tighten bounds more than knowledge of mediation

Reminder for me how much to learn working with great people outside your discipline
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