Rubuta ci gaba don wannan sakin layi - Tasirin muhalli akan tsayi an nuna shi ta hanyar binciken da masanin ilimin ɗan adam Barry Bogin da abokan aikin yara na Guatemala Maya da ke zaune a Amurka suka yi. A farkon shekarun 1970, lokacin da Bogin ya fara ziyartar Guatemala, ya lura cewa mazajen Indiyawan Maya suna da matsakaicin tsayi kuma mata suna da matsakaicin. Bogin ya dauki wani jerin ma'auni bayan yakin basasar Guatemala
, wanda a lokacinsa kusan 'yan Guatemala miliyan daya suka tsere zuwa Amurka. Ya gano cewa 'yan gudun hijirar Maya, wadanda shekarunsu suka kama daga shida zuwa goma sha biyu, sun fi tsayi fiye da takwarorinsu na Guatemala. A shekara ta 2000, Mayawan Amurka sun fi Mayawan Guatemala girma a daidai wannan shekarun, galibi saboda ingantaccen abinci mai gina jiki da kiwon lafiya. Bogin ya kuma lura cewa yaran Maya na Amurka suna da ƙafafu masu tsayi, matsakaici fiye da Maya na Guatemala (rabo mafi ƙarancin tsayin zama).