>Men were more likely to greet neighbors than women, as were people with children under the age of 18 in the household, and people with a household income of mo

>Men were more likely to greet neighbors than women, as were people with children under the age of 18 in the household, and people with a household income of more than $120k a year. ah, so "wealthier people are happier and greet more neighbors". Things are much more simple when you drill down into the confounding variables. The data does not support the causality inferred by "maximizes" in the title.