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THEORY-833: In a 2024 survey of a quota-matched online sample of 2,092 US adults and a convenience sample of 103 antitrust lawyers, the public weighed layoffs, worse product quality and more lobbying well above price reductions in judging whether a merger should be challenged, the consumer welfare standard's own objective, while support for replacing that standard was 42.6 points lower among the lawyers than among the public, against a partisan gap of 5.9 points

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Properties4
StatusActive
Tagssociety-and-governance, social-science
SourceLIT-1327 — What Is Ideological Capture and How Do We Measure It? Using Antitrust Reform to Understand Expert–Public Cleavages
SupportsCLAIM-404 — An organization can be governed from outside without any of its decisions being made for it, through the evidence its own procedures receive or through the criteria by which they weigh evidence; the two routes are distinct and each is possible without the other, so informational and evaluative independence do not imply each other; and where the organization's role is to evaluate another that affects its evidence or resources, the interpretation–authority loop can close between the two institutions, so that formal independence of the evaluator's procedure does not make its evaluation independent

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Source

Short, Hill and Brown (2025), Perspectives on Politics 24(2): 680–700, LIT-1327, open access, read in NOTE-1051. Hypotheses H4, H6 and H8 of the pre-analysis plan (osf.io/nyxha).

What was actually shown

The conjoint (H8). Each public respondent judged four hypothetical mergers whose attributes varied at random: prices, quality, employment, lobbying, bailout risk, firm size and industry. The outcome was whether the government should challenge the merger. Average marginal component effects, in percentage points of support for a challenge: price cuts of 5%, 10% and 20% lowered it by 2.6 to 7.7, significant only at 10% and 20%; a 20% workforce cut raised it by 26.3; worse quality by 26.6; more lobbying by 8.1; more bailout risk by 4.7. Price changes and layoffs were varied on the same scale, from a 5% increase to a 20% decrease, “to avoid biasing the results”. Partisan subgroups did not differ significantly in any attribute’s weight.

The cleavage (H4, H6). Asked whether the government “should mainly consider the impact on consumers” or “give equal weight to the impact on consumers, workers, small businesses, and local communities”, 80.6% of Democrats, 81.4% of independents and 74.8% of Republicans chose the second. Among the lawyers 36.7% did. The partisan gap was 5.9 points and the public–lawyer gap 42.6 (both p < 0.05). The paper reports the result robust to demographic controls in an appendix not read here.

What could have come out otherwise: price cuts could have weighed as much as layoffs, and lawyers could have differed from the public no more than Republicans differ from Democrats. Neither happened. The randomized attributes make the conjoint weights a within-design comparison, so they do not depend on the sample matching the population’s composition.

What this does not say

  • That the samples are representative. The public sample is a nonprobability panel weighted to national margins. The lawyers are a convenience sample, recruited by Facebook advertising and email to practice groups, and 51.4% Democrats.
  • That the public’s weights are its interest. The paper itself does not equate the two (note 9).
  • Why lawyers differ. They are about 18 points less likely to believe large corporations have too much power. Whether training or selection produces that is not identified.
  • That the consumer welfare standard is ideological capture. The measurement shows that values outside the standard weigh heavily with the public and that practitioners diverge. The verdict of capture also needs the paper’s historical case and is held, Proposed, as THEORY-859.

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