Extracurricular activities reflect the differences in child-rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.
Bicycle use was not included in the study but Newman noted that the two most "bicycle friendly" cities considered—Amsterdam and Copenhagen—were very efficient.
Newman believes one of the best studies on how cities built for cars might be converted to rail use is The Urban Village report, which used Melbourne as an example.
Newman, however, believes the study demonstrates that "the auto-dependent city model is inefficient and grossly inadequate in economic as well as environmental terms".
For his research, Agassiz visited many places in the northern parts of Europe and North America, from the mountains of Scandinavia and New England to the rolling hills of the American Midwest.