# Questions tagged [endogeneity]

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### What is the example of inaccurate impact due to endogeneity?

When learning about endogenous variable, I found an answer in a topic on StackExchange very direct: An Exogenous Variable is defined as a variable which is unaffected by other variables within an ...
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### What does "endogeneity of the industry structure" means?

Dong,2019,page 899 documented that: We estimate Export Market Leniency Laws as the weighted average of the passage of leniency programs in all other countries, excluding the country in which the firm ...
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### Verification of logic behind instrumental variable approach

I would like to know whether the following reasoning regarding the instrumental variable approach is acceptable. I understand there are case-by-case factors that affect the applicability of ...
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### Using dependent variable's and exogenous variables' lags as instruments in 2SLS

Suppose we have the following structural equations: $$y=\beta_0+\beta_1x+\beta_2z_z+\beta_3z_3+\epsilon,$$ where $x$ is the endogenous variable and $z_1,z_2$ are exogenous variables. In the literature,...
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### Intuition behind the Endogeneity Test (the Hausman Test)

Suppose we have the following simple regression model (time series framework)" $$y_1=\beta_0+\beta_1 y_2+\beta_2 z_1 +\beta_3 z_2 +u,$$ where $z_1$ and $z_2$ are exogenous and $y_2$ is either ...
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### Some confusions about instrumental variable (econometrics)

As the title says, I have some confusions about instrumental variable. According to my lecture note (which is supposed to be reliable), instrumental variable has two big properties: Validity: an ...
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### Why do we treat demographic variables as being exogenous?

I I would like to ask about demographic variables. In general, we usually include those variables as independent variables when we run regressions such as wage equation or test score equation. What ...
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### If an endogenous explanatory variable is serially correlated does it mean that its lags are also endogenous?

in panel data when examining economic growth determinants lags are often used to account for endogeneity of explanatory variables. However if the explanatory variable is serially correlated, does it ...
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### Can all the regressors be endogenous in a given model?

I'm trying to estimate the following model: Labor demand=f(wages,lagged labor demand, GFCF, GDP, trade share, labor productivity, real exchange rate)... (1) Wages= f(labor demand,lagged wages, GFCF, ...
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### The rationale for using a lagged variable to address endogeneity arising from simultaneous causation?

when there is simultaneous causation between dependent and independent variables often in papers we see a lagged variable being used in place of contemporaneous variable. For example, Clemens, ...
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### Endogeneity problem with a dummy variable

I have a panel data model as following, $$Y_{it}=intercept +B_1X_{it}+B_2Q_{it}+error_{it}$$ where $i$ is for firm and $t$= time. $Y$= trade credit demand, $X$= inventory cycle, as inventory ...
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### Justification for my Random Effects estimation

I need to defend my use of the Random Effects (RE) estimator in my economics project. I've been told in cross validated that the proper place for the question is here. The causal effect of the ...
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### Confounding versus endogenous variables. What is their relative hierarchical position?

There are valuable resources on the lexicon of types of variables quickly accessible, such as here. However, some of these concepts appear side-by-side often enough to make them confusing. For ...
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### Does endogeneity matter when neither independent variable nor error term are correlated with dependent variable?

if the double arrows show that X and the error term are correlated, but that neither variable affects Y, is endogeneity a problem in this scenario? Why or why not?
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### Testing for Endogeneity

I apologize if this question is very basic. I have the following plain vanilla Instrumental Variable model. $Y=\alpha+X\beta+\varepsilon$ $X=\delta+Z\gamma+\eta$ \$\varepsilon\perp\eta,\quad Z\perp\...
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### Count panel models for endogenous regressors

I have a count variable as the dependent variable and several continuous regressors on the RHS. The dependent variable and some regressors are supposed to be endogenous to unobserved factors. I have a ...
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### Addressing endogenity in price elasticity and the Promotion Optimization Problem

I have data on purchases gross prices discounts (like coupons) net prices (i.e. gross price - discounts) number of leads (potential customers at any given time) conversion rates (# purchases / # ...
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### How to test if variables are jointly determined?

If I wanted to test, for example, if consumption growth and credit growth are jointly determined, and therefore justifying the use of instrumental variables, how would I go about this? Would running a ...