IESET.
Hypotheses·labour·clinton_welfare_reform_labour_participation_effect

Clinton's 1996 welfare reform (TANF, work requirements) increased low-skill labour-force participation and reduced caseloads without the catastrophic child-poverty outcomes critics predicted.

REFUTEDengine/runs/clinton_welfare_reform_labour_participation_effect

REFUTED — shape=ITS, sign - OPPOSITE claim +, mean_gap=-2.02, z=-8.8

confidence cueThis test cuts against the claim as written or misses its pre-declared threshold.

policy briefNeeds review

In ordinary language

In plain terms, this asks whether tanf block grant adoption is actually linked to better or worse single mother labour force participation from 1990 to 2010.

plain answer

The data did not support the prediction. shape=ITS, sign - OPPOSITE claim +, mean_gap=-2.02, z=-8.8

why it matters

Labor-market rules often help some workers while risking job loss or slower hiring for others. This test looks for that tradeoff in observable employment or unemployment data.

how the test works

It compares 1 country or place units from 1990 to 2010, using a event study design, with fixed effects for state and year.

what was measured
What changed
  • Tanf block grant adoption
  • Eitc expansion
What we checked
  • Single mother labour force participation
  • Tanf caseload
  • Child poverty rate
what this does not prove

A single test is not the whole truth. It narrows the claim under a specific sample, time period, and method. Strong policy conclusions need the pattern to survive nearby tests, alternative data, and serious objections.

verification

0 input datasets, 0 unresolved missing series, provenance status: no input vintages recorded.

Results

engine/runs/clinton_welfare_reform_labour_participation_effect
1007550250199020002010USA
illustrative sketch · run pending
No coefficients yet. When the model fires, this chart will show single_mother_labour_force_participation across 1 sampled countries over 1990–2010.
The shapes above are stylised — none of the lines are real data.
Placeholder for clinton_welfare_reform_labour_participation_effect. Published chart will be generated from engine/runs/clinton_welfare_reform_labour_participation_effect/chart_data.json.

Who has skin in the game — schools predicting on this

2 schools list this hypothesis as a test of their position. The chips below are school-level scoreboard outcomes, not a second hypothesis verdict.

hypothesis verdict vs scoreboard outcome

The banner verdict judges this hypothesis as written. The scoreboard asks whether each school's polarity-corrected prediction was right. Raw status is not a school win: SUPPORTED supports schools that needed SUPPORTED, but refutes schools that needed REFUTED.

Classical Liberalwins if SUPPORTEDschool refutedEmpirical Pragmatist (the framework's house position)wins if MIXEDpartial/no-call

Pre-registration

pre-registered
first-spec commit bae09ab · 2026-04-29T22:09:42Z
run generated · 2026-05-15T20:47:43Z

Clinton's 1996 welfare reform (TANF, work requirements) increased low-skill labour-force participation and reduced caseloads without the catastrophic child-poverty outcomes critics predicted.

Falsification criterion — what would disprove this

set before the run · honoured after

This hypothesis is considered falsified if:

The hypothesis is falsified if the preregistered empirical test shows the opposite direction of the claim at conventional significance (p < 0.05), or if the primary outcome measure does not move in the claimed direction.

formal test & threshold
test:      clinton_welfare_reform_labour_participation_effect_placeholder_test

Method

Template
event_study
Fixed effects
state, year
Clustering
state
Sample
1 countries · 1990 – 2010
Evidence type
associational

Event study around 1996 PRWORA enactment using state-year panel of single-mother labour-force participation (CPS) and TANF caseloads. State-staggered TANF block-grant adoption dates as treatment timing. Pre-window 1990-1995, post-window 1996-2010.

Data

VariableSourceTransform
single_mother_labour_force_participation
outcome
fred:LNS11300002tier 1
level
tanf_caseload
outcome
derived:tanf_state_caseloadtier 4
log
child_poverty_rate
outcome
world_bank_wdi:SI.POV.NAHCtier 2
level
tanf_block_grant_adoption
treatment
derived:tanf_state_adoption_datestier 4
indicator
eitc_expansion
treatment
derived:eitc_max_credittier 4
level
state_unemployment_rate
control
bls:LAUST010000000000003tier 1
level
state_minimum_wage
control
fred:STTMINWGCAtier 1
log
gdp_per_capita_real
control
world_bank_wdi:NY.GDP.PCAP.KDtier 2
log

● ready  · ● pending  · ● reconstruct-needed

Detailed result card

Result card — clinton_welfare_reform_labour_participation_effect

Verdict: REFUTED — shape=ITS, sign - OPPOSITE claim +, mean_gap=-2.02, z=-8.8

Pre-registration

  • Claim: Clinton's 1996 welfare reform (TANF, work requirements) increased low-skill labour-force participation and reduced caseloads without the catastrophic child-poverty outcomes critics predicted.
  • Falsification rule: The hypothesis is falsified if the preregistered empirical test shows the opposite direction of the claim at conventional significance (p < 0.05), or if the primary outcome measure does not move in the claimed direction.
  • Falsification test:
  • Event year: 1996

Estimate

  • shape: single_country_its
  • country: USA
  • event_year: 1996
  • n_pre: 6
  • n_post: 15
  • pre_trend_slope: 0.326428571428676
  • pre_trend_intercept: -592.3380952383039
  • pre_residual_sd: 0.22905256899907284
  • end_year: 2010
  • end_year_actual: 58.625
  • end_year_counterfactual: 63.78333333333478
  • end_year_gap: -5.158333333334781
  • mean_post_gap: -2.02000000000073
  • z_end: -22.520303334190768
  • z_mean: -8.818936232969763
  • post_period_years: [1996, 2010]

Variables resolved

  • fred:LNS11300002 → single_mother_labour_force_participation (outcome, publisher=fred, n=79)
  • world_bank_wdi:SI.POV.NAHC → child_poverty_rate (outcome, publisher=world_bank_wdi, n=1172)
  • bls:LAUST010000000000003 → state_unemployment_rate (controls, publisher=bls, n=5)
  • fred:STTMINWGCA → state_minimum_wage (controls, publisher=fred, n=59)
  • world_bank_wdi:NY.GDP.PCAP.KD → gdp_per_capita_real (controls, publisher=world_bank_wdi, n=14066)

Variables missing data

  • derived:tanf_state_caseload (outcome, name=tanf_caseload)
  • derived:tanf_state_adoption_dates (treatment, name=tanf_block_grant_adoption)
  • derived:eitc_max_credit (treatment, name=eitc_expansion)

Generated by scripts/run_event_study.py at 2026-05-15T20:47:43+00:00

Notes

Stub seeded from a classical-liberal school prediction about Clinton 1996 welfare reform raising low-skill labour-force participation. Concurrent 1993 EITC expansion and the late-1990s labour boom are major confounds; needs human review of identification windows.

Authored framework. Read the transparency note.