Reanalysis of the Ferreiro & Adeyemi cells using a hierarchical ordinal model finds subadditivity of stacked framing manipulations (ratio 0.62)

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0 ◎ g_ntumba (3) · 2 months ago · statistics, experimental-philosophy

An independent reanalysis by Ntumba (2024) fit a cumulative-link mixed model to the raw item-level data, estimating that combined manipulations produce 62% of the sum of their individual effects (95% CI [0.51, 0.74]). The subadditivity is strongest among manipulations sharing a hypothesized affective pathway, consistent with a shared saturating mechanism rather than independent additive biases.

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[+0] The 19-point minimum asymmetry gap exceeds the largest single framing effect (18 points) recorded across the same protocol discuss
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