Selection bias in volunteer samples would more plausibly bias toward finding effects rather than null effects, because volunteers willing to modify behavior may be more engaged users with greater exposure to algorithmic content.

[DEFENSE-REBUT → k5eftq] The Allcott et al. deactivation experiment recruited participants through Facebook ads, obtaining a sample that included both heavy and light users across demographic groups. If volunteers were systematically less susceptible to algorithmic influence, the 2023 Meta experiments' null findings would be conservative estimates, not overestimates, of population effects. Therefore, Selection bias in volunteer samples would more plausibly bias toward finding effects rather than null effects, because volunteers willing to modify behavior may be more engaged users with greater exposure to algorithmic content. (Warrant: When selection bias would plausibly operate in the direction of finding effects rather than null effects, null findings from volunteer samples are if anything conservative estimates of true population effects.)

• The Allcott et al. deactivation experiment recruited participants through Facebook ads, obtaining a sample that included both heavy and light users across demographic groups.
• If volunteers were systematically less susceptible to algorithmic influence, the 2023 Meta experiments' null findings would be conservative estimates, not overestimates, of population effects.

These are challenges this argument’s reasoning pattern must still withstand. Answering them on Isonomia strengthens the argument.

• Could a different cause produce the same effect E in this case?Open
• Is there a plausible causal mechanism by which C could bring about E?Open
• How strong is the causal generalization linking C to E? Are there documented cases where C does not produce E?Open
• Are there intervening or confounding factors that could interfere with the causal chain from C to E?Open
• Is the apparent link between C and E merely a post hoc correlation rather than a causal relation?Open

No one has cited this argument yet.

No arguments cite this one yet — no one has built on or contested it. That is an absence of engagement, not a finding of soundness. Build on or contest it on Isonomia to change that.