If i use time dummies in a OLS pooled regression, does it imply time fixed effects?
Maybe to clear things up: 1)There is a pooled time -series-cross-section regression, the equation uses time dummies. The estimation Method is described as: OLS with time fixed effects.
2)Now I have another Paper: They used Panel Data and both bilateral fixed effects and year dummies to adjust for unobserved time invariant heterogeneity. --> Are year dummies = time effects, and are they fixed?
3)Same Paper as in 2) uses now Panel Data with bilateral fixed effects and Country-and-Time effects [it, jt]. Are Country-and-time effects also fixed or are non fixed effects possible?
Would be nice if some one can answer my questions, it is really important for me. Thx