IESET.
Hypotheses·monetary·australia_2008_fiscal_stimulus_output_effect

Australian fiscal expansion during 2008-2009 GFC response prevented recession entry, consistent with MMT claim that currency-issuer fiscal space in high-unemployment regimes produces output gains with minimal inflation cost.

SUPPORTEDengine/runs/australia_2008_fiscal_stimulus_output_effect

SUPPORTED — AUS log GDP per capita rose +2.06pp 2007→2010 vs donor-mean -1.78pp; DiD = +3.84pp (≥ 2.0pp threshold). Pre-trend 2003→2007 DiD = -0.84pp (smaller). Donor pool: 12 countries excluding USA (ARRA).

confidence cueThis is a clear pass for the claim as written. It still applies only to this sample, period, and method.

policy briefNeeds review

In ordinary language

In plain terms, this asks whether aus fiscal stimulus indicator is actually linked to better or worse real income per capita from 2000 to 2012.

plain answer

The data clearly moved in the predicted direction. AUS log GDP per capita rose +2.06pp 2007→2010 vs donor-mean -1.78pp; DiD = +3.84pp (≥ 2.0pp threshold).

why it matters

This matters because monetary claims should change belief only when they survive a pre-declared empirical test.

how the test works

It compares 14 country or place units from 2000 to 2012, using a synthetic control design.

what was measured
What changed
  • Aus fiscal stimulus indicator
  • Discretionary fiscal impulse pct income
What we checked
  • Real income per capita
  • Unemployment rate
  • Cpi inflation
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

3 input datasets, 0 unresolved missing series, provenance status: partial provenance.

Results

engine/runs/australia_2008_fiscal_stimulus_output_effect
Loading chart…

Who has skin in the game — schools predicting on this

1 school 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.

Modern Monetary Theorywins if SUPPORTEDschool supported

Pre-registration

pre-registered
first-spec commit 4c8ce8e · 2026-07-18T22:11:21Z

Australian fiscal expansion during 2008-2009 GFC response prevented recession entry, consistent with MMT claim that currency-issuer fiscal space in high-unemployment regimes produces output gains with minimal inflation cost.

Falsification criterion — what would disprove this

set before the run · honoured after

This hypothesis is considered falsified if:

PRIMARY (dispositive): the hypothesis is SUPPORTED if the AUS-vs-donor-pool DiD on log real GDP per capita over 2007-2010 is at least +2.0pp, where the donor pool is the spec sample (CAN, GBR, NZL, DEU, FRA, ITA, JPN, KOR, CHE, NOR, SWE, NLD) excluding USA (ARRA was the only sample peer with a comparable >2%-of-GDP cash-handout package). REFUTED if the DiD is non-positive (AUS did not outperform). PARTIAL if the DiD is positive but below +2.0pp. INFORMATIVE: AUS-vs-donor change in unemployment rate (negative = AUS labour-market outperformance) and CPI inflation differential (small = MMT minimal-inflation-cost claim) over 2007-2010, reported as DiDs. METHOD_VALID: at least 8 of the 13 donor countries with usable GDP-per-capita data at both 2007 and 2010, otherwise inconclusive (data gap). Pre-trend 2003-2007 DiD must be smaller in magnitude than the 2007-2010 DiD, otherwise verdict is downgraded to weakened (parallel-trends violation).

formal test & threshold
test:      did_aus_vs_oecd_donor_mean_log_gdp_pc_2007_2010
threshold: PRIMARY: did_log_gdp_pc(AUS, 2007, 2010) - mean_donor_pool_dlog >= 0.020 AND |pre_trend_did_2003_2007| < |primary_did_2007_2010|.

Method

Template
synthetic_control
Clustering
country
Sample
14 countries · 2000 – 2012
Evidence type
associational

Spec calls for synthetic-control counterfactual for Australia 2008-2010 vs a donor pool of advanced economies that did not deploy a comparable cash-handout fiscal package. Outcome: real GDP per capita; secondary outcomes: unemployment, CPI inflation. The runnable replication downgrades to an unweighted peer-mean DiD (no synth library available locally) — see methodology_note.

Data

VariableSourceTransform
real_gdp_per_capita
outcome
world_bank_wdi:NY.GDP.PCAP.KDtier 2
imf:NGDPRPCtier 2
log_level
unemployment_rate
outcome
world_bank_wdi:SL.UEM.TOTL.ZStier 2
ilostat:UE_TUNE_SEX_AGE_RTtier 2
level_pct
cpi_inflation
outcome
world_bank_wdi:FP.CPI.TOTL.ZGtier 2
pct_change_yoy
aus_fiscal_stimulus_indicator
treatment
constructed:binary = 1 for AUS from 2008-10 (Rudd Economic Security Strategy + Nation Building)tier 5
binary
discretionary_fiscal_impulse_pct_gdp
treatment
imf:GGXCNL_NGDPtier 2
level
pre_treatment_gdp_growth
control
world_bank_wdi:NY.GDP.MKTP.KD.ZGtier 2
lag_avg_2000_2007
trade_openness
control
world_bank_wdi:NE.TRD.GNFS.ZStier 2
level
china_demand_proxy
control
world_bank_wdi:NY.GDP.MKTP.KD.ZGtier 2
chn_filter

● ready  · ● pending  · ● reconstruct-needed

Detailed result card

Australia 2008 fiscal stimulus output effect

Verdict: SUPPORTED — AUS log GDP per capita rose +2.06pp 2007→2010 vs donor-mean -1.78pp; DiD = +3.84pp (≥ 2.0pp threshold). Pre-trend 2003→2007 DiD = -0.84pp (smaller). Donor pool: 12 countries excluding USA (ARRA).

Summary

  • Primary DiD (AUS minus donor-mean Δlog GDP per capita 2007→2010): +3.84pp (threshold ≥ +2.0pp).
  • AUS 2007→2010 Δlog GDP per capita: +2.06pp.
  • Donor-mean (excl. USA) 2007→2010 Δlog GDP per capita: -1.78pp.
  • Pre-trend check 2003→2007 DiD: -0.84pp (should be smaller than the primary DiD).
  • Robustness DiD with USA reincluded: +3.90pp.
  • Secondary: AUS-vs-donor unemployment-rate change 2007→2010 = -0.53pp (negative = AUS labour-market outperformance).
  • Secondary: AUS-vs-donor CPI-inflation change 2007→2010 = +0.75pp (small = MMT minimal-inflation-cost claim holds).
  • Donor pool: CAN, GBR, NZL, DEU, FRA, ITA, JPN, KOR, CHE, NOR, SWE, NLD.

Method

Spec called for synthetic-control matching of Australia 2008-2010 to a weighted OECD donor pool. The local venv has no synth library (SyntheticControlMethods, pysynth), so per the handoff doc's downgrade allowance this run uses an unweighted peer-mean DiD: AUS Δlog GDP per capita minus the simple mean of donor-pool Δlogs between 2007 and 2010. The donor pool is the spec's sample minus AUS minus USA (ARRA was the only sample peer with a comparable >2%-of-GDP cash-handout package; ~5.5% of GDP). Robustness with USA reincluded is reported separately.

Pre-trend 2003→2007 is checked against the primary 2007→2010 magnitude as a parallel-trends proxy. If the pre-trend is comparable or larger in absolute value than the primary effect, the verdict is downgraded to weakened regardless of the primary magnitude.

Secondary outcomes (unemployment-rate change, CPI inflation change) are reported as informative DiDs but do not gate the verdict.

Data

  • world_bank_wdi:NY.GDP.PCAP.KD
  • world_bank_wdi:SL.UEM.TOTL.ZS
  • world_bank_wdi:FP.CPI.TOTL.ZG

Notes

Origin is auto-generated coverage-gap stub seeded from MMT/Keynesian framing of Australia's 2008 cash-handout package as a successful currency-issuer fiscal response. Human review required.

Authored framework. Read the transparency note.