Sivame ukuva ukuba izinja zifana nabanini bazo, kwaye ngaphandle kwesizathu. Kule minyaka sibonile ukuba, ngathi, baphulukana neenwele zabo ngenxa yoxinzelelo, baziva belusizi ngokuswelekelwa ngumntu abamthandayo kwaye baqonde iimvakalelo zethu. Akumangalisi ke ukuba ezi zilwanyana ziza kuzo xelisa ubuntu kwabo babangqongileyo, into inzululwazi isandula ukuyixhasa.
Sithetha ngophando olusandula ukwenziwa liqela KwiYunivesithi yaseVienna (Ostriya) kwaye yapapashwa kwiphephancwadi PLoS ONE, eqinisekisa ukuba izinja zamkela iimpawu kubantu abahlala nabo. Ukwenza oku, oososayensi badibanisa izinja ezili-132 zizonke kunye nabanini bazo, kwaye bahlalutya indlela abaziphethe ngayo phantsi kovavanyo oluthile.
Ngexesha labo, iingcali ziqwalasele ukusabela kwezilwanyana kunye nabantu, ukubeka esweni ezinye iinkcukacha ezinje ngenqanaba lentliziyo okanye amanqanaba e-cortisol. Ukongeza, abathathi-nxaxheba bangabantu baphendule kuvavanyo ukulinganisa amanqanaba eempawu ezintlanu eziphambili zobuntu: uvelwano, i-neuroticism, ukubhukuqa, isazela kunye nokuvuleka. Emva koko, bagcwalisa iphepha lemibuzo elifanayo malunga neempawu zezilwanyana zabo zasekhaya.
Ngexesha lofundo, oososayensi babenakho ukuqinisekisa, njengoko bezibandakanya kwizigqibo zabo, ukuba umnini ukhathazekile kwaye une-neurotic, inja nayo yamkela ezi ndlela zokucinga. Ngokuchasene noko, abanini babantu abazolileyo nabo babezolile. Kwaye izinja zizilwanyana ezibuthathaka kwimeko yeemvakalelo zabantu abahlala nabo, kuba kule minyaka idlulileyo bazinzileyo ibhondi ekhethekileyo unathi.
Ngokuka-Iris Schoberl, umbhali ophambili wophando, "Iziphumo zethu zibonisa ukuba izinja kunye nabanini bazo zii-dyads zentlalo, oko kukuthi, izibini zezinto ezimbini ezinxibelelene ngokukodwa, kwaye bayondla emva bephembelela isimilo sabo«. Ngapha koko, uphando luye lwafumanisa ukuba ngumntu onefuthe elikhulu enjeni.