In one UK experiment, about 36%–42% of GPT-4o's immediate attitude effect remained at a one-month recontact.

SocioLens project,

Claim LD10-HQ-C03 (v1.0)

In one UK experiment, about 36%–42% of GPT-4o's immediate attitude effect remained at a one-month recontact.

Provenance and status

Claim type: Estimate
Publication status: Eligible for publication, with a qualifier
Verification state: Checked against the primary source. Who checked this claim is not recorded for it; claim checks so far were AI-led, and no person has checked claims against their sources.
Does not license: Durable belief change generally, behaviour or long-term influence
Limitations: Single model; attrition; self-report; one horizon
Source (as cited): Hackenburg et al. 2025 full text
Source type: Peer-reviewed journal article (recorded as “Peer-reviewed study / preprint text”)
Institutional position: Academic + UK AISI
Maturity of the evidence: Emerging evidence
Recorded date: 25 September 2026
Currentness / correction: This is the current version. No correction or concern is recorded on its sources.

Sources this version cites

Hackenburg et al., Science 2025 / arXiv full text (Peer-reviewed journal article)
Read the original

Version

This page shows version v1.0. Its record never changes, even when newer evidence arrives; the site may add a note to the page or withhold a figure not cleared for public use.

This pinned version is also the current version.

Versions: v1.0 · current

Raw record: every recorded field, with its coded values

All 25 canonical Claim fields, verbatim, with the coded values derived from them. The plain-language labels above are read from these.

Claim type (coded): ESTIMATE (as printed: “ESTIMATE”)
Publication status (coded): ELIGIBLE (QUALIFIED) (as printed: “ELIGIBLE WITH QUALIFIER”)
Verification state (coded): CONTENT_VERIFIED_PRIMARY
Source type (coded): PEER_REVIEWED_JOURNAL_ARTICLE
Maturity (coded): EMERGING

#	Canonical field	Canonical value (verbatim)	Normalized (Claim Value Vocabulary v1.0.2)
1	CLAIM ID	LD10-HQ-C03	—
2	PUBLIC-FACING CLAIM	In one UK experiment, about 36%–42% of GPT-4o's immediate attitude effect remained at a one-month recontact.	—
3	CLAIM TYPE	ESTIMATE	base_types: ESTIMATE
4	RESEARCH STRAND	B — Durability & behaviour	—
5	MATURITY	EMERGING	states: EMERGING
6	SOURCE	Hackenburg et al. 2025 full text	source_ids: SRC-LD10-HACKENBURG-SCIENCE-2025
7	SOURCE TYPE	Peer-reviewed study / preprint text	classes: PEER_REVIEWED_JOURNAL_ARTICLE
8	INSTITUTIONAL POSITION	Academic + UK AISI	—
9	SCOPE	UK; one-month recontact	—
10	DESIGN	RCT follow-up	—
11	SAMPLE / DATASET	Study-1 recontact subsample	—
12	MODEL / TOOL / VERSION	GPT-4o	—
13	COMPARATOR	Control	—
14	MAIN RESULT	Approximately 36%–42% of immediate effect retained	—
15	INFERENTIAL TARGET	Partial persistence of attitude change	—
16	DOES NOT LICENSE	Durable belief change generally, behaviour or long-term influence	—
17	VERIFICATION STATE	CONTENT VERIFIED	state: CONTENT_VERIFIED_PRIMARY · verified_by: UNKNOWN
18	LIMITATIONS	Single model; attrition; self-report; one horizon	—
19	CONTRADICTORY / SUPPORTING SOURCES	Older GPT-4o vendor study found weaker one-week persistence	—
20	GEOGRAPHY / LANGUAGE	UK / English	—
21	DISTRIBUTIONAL LEDGER	NO EVIDENCE LOCATED	—
22	R01 / FIELD-MAP LINKS	D7, R-1	—
23	WHAT WOULD CHANGE THIS CLAIM?	Longer follow-ups or counter-messaging tests	—
24	PUBLICATION STATUS	ELIGIBLE WITH QUALIFIER	state: ELIGIBLE · qualifiers: QUALIFIED
25	RECORDED DATE	2026-09-25	—

Field 22 references resolved against Field Map v0.2: D7 (DOMAIN); R-1 (LENS)

The sources as recorded, with their record IDs and coded source types:

Pinned Sources (field 6, version-specific)

“Hackenburg et al. 2025 full text” → Hackenburg et al., Science 2025 / arXiv full text (SRC-LD10-HACKENBURG-SCIENCE-2025--v1.0) — Hackenburg et al., Science 2025 / arXiv full text; class PEER_REVIEWED_JOURNAL_ARTICLE (explicit public provenance pin)

Cited by Living Debate versions

Persuasion, Intermediation & the Information Order (v0.1) LD-10

Cite this page

SocioLens project. (2026, September 25). In one UK experiment, about 36%–42% of GPT-4o's immediate attitude effect remained at a one-month recontact [Claim LD10-HQ-C03, version v1.0]. SocioLens. https://sociolens-web.pages.dev/claims/ld10-hq-c03/v1.0/

@misc{sociolens_ld10_hq_c03_v1_0,
  author = {{SocioLens project}},
  title = {In one UK experiment, about 36\%–42\% of GPT-4o's immediate attitude effect remained at a one-month recontact.},
  year = {2026},
  date = {2026-09-25},
  howpublished = {\url{https://sociolens-web.pages.dev/claims/ld10-hq-c03/v1.0/}},
  note = {Claim LD10-HQ-C03, version v1.0}
}

The link points to this version, whose record never changes. For a finding, cite the original study as well: SocioLens summarizes research and does not replace it.

Research-of-record provenance

Materialized by sociolens-materializer 0.6.0 at 2026-09-28T20:00:00.000Z; normalization contract SocioLens — Claim Value Vocabulary v1.0.2 — Pre-Spike Materialization Contract (v1.0.2). Content seal SHA-256 a8a62e89e22298ef208910d6ff8d1ffbf2c4e4d2df9c088bf8ee51f961bbaca8.

Frozen Drive-derived inputs

R07 — LD-10 Canonical Claim Ledger v1.0 — LOCKED (v1.0) — Drive ID 1f9tgGnqv80_UyhW0kCgcnTgWNPlx-DYM; revision: NOT_EXPOSED_BY_DRIVE_TEXT_EXPORT; Drive modified ; block “ENTRY 03 — LD10-HQ-C03 ” SHA-256 825306e456b159a739a77e091d2b1263ca5c0a8eec0f123ad6a8690809eebe95; SocioLens — Programme Status & Authority Register v0.6 status “CURRENT.”; frozen fixture fixtures/frozen/r07-ld10-claim-ledger-v1.0-canonical.

Builder decisions (not Drive data)

VERSION = v1.0 — basis: Claim version taken from the canonical ledger artifact version (R07 — LD-10 Canonical Claim Ledger v1.0); Implementation Architecture Selection §5 logical_id/version convention.
CURRENT_POINTER = true — basis: SocioLens — Programme Status & Authority Register v0.6 status for "R07 — LD-10 Canonical Claim Ledger v1.0 — LOCKED": "CURRENT."
FIELD_6_SOURCE_REFERENCE = SRC-LD10-HACKENBURG-SCIENCE-2025--v1.0 — basis: field 6 of ENTRY 03 — LD10-HQ-C03 cites "Hackenburg et al. 2025 full text"; the frozen field-6 segment of this ClaimVersion's ledger block (fixtures/frozen/r07-ld10-claim-ledger-v1.0-canonical); Drive-derived identity authority (Issue #53 Source inventory, factory-hq decision HQ-ESC-sociolens-ld10-t5-20261011T050405Z-01 ruling 3 inventory S2): R07 Batch 01 lines 18, 20, 21, 47, 49, 50; ledger C03 fields 6/7/8; KEY EVIDENCE line 927 of the locked LD-10 Living Debate.
SOURCE_PROVENANCE_PIN = SRC-LD10-HACKENBURG-SCIENCE-2025--v1.0 — basis: Issue #5 proof rendering (Architecture Proof Protocol v0.1 AP-08 / Amendment v1.2 §6): explicit version-pinned public provenance of this ClaimVersion — the pinned field-6 Source record "Hackenburg et al. 2025 full text"; Drive-derived identity authority (Issue #53 Source inventory, factory-hq decision HQ-ESC-sociolens-ld10-t5-20261011T050405Z-01 ruling 3 inventory S2): R07 Batch 01 lines 18, 20, 21, 47, 49, 50; ledger C03 fields 6/7/8; KEY EVIDENCE line 927 of the locked LD-10 Living Debate.