**Definition:**Structural parameters are underlying parameters in a model or class of models.

If a theoretical model explains two effects of variable x on variable y, one of which is positive and one negative, they are structurally separate. In another model, in which only the net effect of x on y is relevant, one structural parameter for the effect may be sufficient.

So a parameter is structural if a theoretical model has a distinct structure for its effect. The definition is not absolute, but relative to a model or class of models which are sometimes left implicit.

**Terms related to Structrual Parameters:**
*None*

**About.Com Resources on Structrual Parameters:**
*None*

**Writing a Term Paper? Here are a few starting points for research on Structrual Parameters:**

**Books on Structrual Parameters:**
*None*

**Journal Articles on Structrual Parameters:**
*None*