Researchers reported that for men,being unmarried increases the risk of depression.These findings were based on the medical records of 400 married men and 500 unmarried men.Since there is no random assignment,this conclusion is not justified because there may be lurking variables.Which of the following are possible lurking variables?
I: Rate of depression
II: Income
III: Type of employment
IV: Age
V: Gender
A)II,III,IV
B)III,IV
C)II,IV
D)II,III,IV,V
E)I,II,III

Question

Researchers reported that for men,being unmarried increases the risk of depression.These findings were based on the medical records of 400 married men and 500 unmarried men.Since there is no random assignment,this conclusion is not justified because there may be lurking variables.Which of the following are possible lurking variables? 
I: Rate of depression
II: Income
III: Type of employment
IV: Age
V: Gender
A)II,III,IV
B)III,IV
C)II,IV
D)II,III,IV,V
E)I,II,III

Quizplus · Accepted Answer

Lurking variables like Income, Type of employment, and Age could influence both marital status and depression risk, but Gender is not a lurking variable in this context since the study already focuses on men.

Researchers Reported That for Men,being Unmarried Increases the Risk of Depression.These