A researcher wants to determine whether parental income is related to the IQ of their children. It turns out that in randomly selected samples of adolescents, those children of the highest earners also had the highest IQs. Based on this information, evaluate whether the researcher can claim that parental income has a causal effect on their children's IQ. Refer to concepts discussed in class.Most men age 15-44 say that they want to have children at some point