Regional heterogeneity in consumption due to current income shocks: New evidence from the Permanent Income Hypothesis

Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

Resumé

In the light of new theoretical and empirical work on the Permanent Income Hypothesis we tackle earlier findings for German data, which reject its validity given a large fraction of liquidity constrained consumers. Starting from a standard short run approach we do not find evidence for excess sensitivity and thus liquidity constrained households in the context of a dynamic panel data model for German states between 1970 and 2006. Our preferred specification relates changes in consumption to a ‘surprise’ term in permanent income as well as past values of consumption growth. We can interpret this specification as a solution to a consumer’s optimization problem with habit persistence. Different from earlier findings changes of income growth measuring the excess sensitivity of consumption with respect to income changes and thus the degree of liquidity constrained households turn out insignificant. To check the robustness of these results we also combine the long- and short-run perspective in a co-integration model. Here we specify a Panel-ECM and look at its short run adjustment to judge about the share of liquidity constrained households. We find a significant but much lower fraction of constrained agents as in the earlier literature. Since we employ different estimators including (pooled) mean group estimation, we are also able to check for the asymmetry in the income-consumption path for German regions both with respect to the long and short run adjustment dynamics. Here we borrow from the literature on Poolability tests and search for macro regional clusters with similar adjustment paths. The findings show that for the sample of West German states between 1970 and 2006 both for short and long run parameters the assumption of poolability of the data cannot be rejected. However, we find a clear distinction in the short run path of the East German states since 1991 (which nevertheless converge to the same long run co-integration as the Western counter
OriginalsprogEngelsk
ForlagEuropean Regional Science Association
StatusUdgivet - 2011

Fingeraftryk

Short-run
Income shocks
Permanent income hypothesis
Liquidity
Household
Cointegration
Poolability
Income
Excess sensitivity
Consumption growth
Regional clusters
Income growth
Robustness
Dynamic adjustment
Surprise
Dynamic panel data model
Optimization problem
Pooled mean group estimator
Asymmetry
Habit persistence

Citer dette

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title = "Regional heterogeneity in consumption due to current income shocks: New evidence from the Permanent Income Hypothesis",
abstract = "In the light of new theoretical and empirical work on the Permanent Income Hypothesis we tackle earlier findings for German data, which reject its validity given a large fraction of liquidity constrained consumers. Starting from a standard short run approach we do not find evidence for excess sensitivity and thus liquidity constrained households in the context of a dynamic panel data model for German states between 1970 and 2006. Our preferred specification relates changes in consumption to a {\^a}€š{\~A}„{\~A}²surprise{\^a}€š{\~A}„{\~A}´ term in permanent income as well as past values of consumption growth. We can interpret this specification as a solution to a consumer{\^a}€š{\~A}„{\~A}´s optimization problem with habit persistence. Different from earlier findings changes of income growth measuring the excess sensitivity of consumption with respect to income changes and thus the degree of liquidity constrained households turn out insignificant. To check the robustness of these results we also combine the long- and short-run perspective in a co-integration model. Here we specify a Panel-ECM and look at its short run adjustment to judge about the share of liquidity constrained households. We find a significant but much lower fraction of constrained agents as in the earlier literature. Since we employ different estimators including (pooled) mean group estimation, we are also able to check for the asymmetry in the income-consumption path for German regions both with respect to the long and short run adjustment dynamics. Here we borrow from the literature on Poolability tests and search for macro regional clusters with similar adjustment paths. The findings show that for the sample of West German states between 1970 and 2006 both for short and long run parameters the assumption of poolability of the data cannot be rejected. However, we find a clear distinction in the short run path of the East German states since 1991 (which nevertheless converge to the same long run co-integration as the Western counter",
author = "Timo Mitze",
year = "2011",
language = "English",
publisher = "European Regional Science Association",

}

Regional heterogeneity in consumption due to current income shocks: New evidence from the Permanent Income Hypothesis. / Mitze, Timo.

European Regional Science Association, 2011.

Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

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