For W to Be an Effective Control Variable in IV

question 4

Multiple Choice

For W to be an effective control variable in IV estimation,the following condition must hold

• A)E(ui)= 0
• B)E(ui|Zi,Wi)= E(ui|Wi)
• C)E(uiuj)≠ 0
• D)there must be an intercept in the regression

---

Definitions:

Gray Matter

The darker tissue of the brain and spinal cord, consisting mainly of nerve cell bodies and branching dendrites, involved in processing and storing information.

Psychoneuroimmunological

Relating to the study of the interactions between psychological processes, the nervous system, and the immune system.

Interpersonal Problems

Issues or difficulties in interactions with other people, which may include communication problems, misunderstanding, and conflicts.

Schizotypal Personality Disorder

A mental health disorder characterized by severe social anxiety, thought disorder, paranoid ideation, derealization, transient psychosis, and often unconventional beliefs.