DrSparrow Is a Social Psychologist Who Studies Romantic Relationships

Dr.Sparrow is a social psychologist who studies romantic relationships.Several researchers have found that there is a link between income and marital satisfaction (e.g. ,Dakin & Wampler,2008) .Dr.Sparrow is curious as to whether there is a causal link between the two variables,such that having a higher income causes higher levels of marital satisfaction.He is confident that he cannot reasonably or ethically manipulate people's income level,so he decides to use a multivariate design.He is also curious as to whether there is a causal link between these two variables or if two other variables (number of arguments and life satisfaction) can explain the relationship.He measures his three variables in a sample of 124 married couples recruited from a local community center.Below are his results.


-Which of the following is NOT a predictor variable in Dr.Sparrow's study?

A) Marital satisfaction
B) Life satisfaction
C) Income
D) Number of arguments