We model the joint process for real per capita U.S. federal government spending and tax revenues as a Threshold Vector Error Correction. We find evidence that fiscal authorities will intervene to reduce real per capita deficit only when it reaches a certain threshold. We also find that fiscal...

The assumption of linearity is tested using five statistical tests for the US and the Canadian unemployment rates and the employment sectoral shares growth rates; construction, finance, manufacturing and trade. An AR(p) model was used to remove any linear structure from the series. Evidence of...