Melissa McGonnell, Matt Orr, Joan Backman, Shannon A Johnson, Fiona Davidson, Penny Corkum
Examining the role of the visuospatial sketchpad in children's math calculation skills using Baddeley and Hitch's model of working memory
Acta psychologica
relative nonlatino whites latinos worse socioeconomic profile lower mortality rate finding presents epidemiologic paradox study tested salmon bias hypothesis latinos engage return migration country origin thereby rendered statistically immortal alternative hypothesis selection healthier migrants united states accounts paradoxnational longitudinal mortality study data used examine mortality rates following groups salmon hypothesis feasible cubans face barriers return migration puerto ricans whose deaths puerto rico recorded us national statistics usborn individuals subject either salmon healthy migrant effectsthe sample included 301718 nonlatino whites 17375 latino whites 25 years older cubans puerto ricans lower mortality nonlatino whites moreover usborn latinos lower mortality usborn nonlatino whitesneither salmon healthy migrant hypothesis explains pattern findings factors must operating produce lower mortality