Ka taƙaita labarin:  An sayar da littattafan Harry Potter fiye da kofi miliyan 450 tun lokacin da aka buga na farko a 1997. Kuma yanzu masu bincike sun gano nasararsa na iya kasancewa a cikin amfani da kalmomin marubucin J.K Rowling ya zaba a cikin jerin - maimakon rubutun gaba ɗaya. Ta wurin bincika ƙwaƙwalwar waɗanda aka yi nazari da su sa'ad da suke karanta ayoyi daga littafin, masu bincike sun gano cewa yin amfani da 'kalmomi masu motsa rai' yana shafan ɓangarorin ƙwaƙwalwar da ke kula da motsin rai. Littattafan Harry Potter (hoton) sun sayar da fiye da miliyan 450 kuma nasarar ta na iya kasancewa a cikin amfani da kalmomin da aka yi amfani da su - maimakon matani gaba ɗaya. Ta hanyar binciken kwakwalwar mutanen da ke karanta sassan daga tarin, masu bincike sun gano 'kalmomin motsawa' sun shafi sassan da ke da alaƙa da motsin rai. Ana kimanta ƙarfin motsin zuciyar kalmomi dangane da ƙimar ƙimar da ƙimar tashin hankali. Valence yana nufin yadda kalma take da kyau ko mara kyau, yayin da farkawa ke nufin 'tsananin ilimin lissafi', ko kuma yadda yake shafar mai karatu da ra'ayinsu game da kalma ko rubutu. Ana amfani da waɗannan kaddarorin don kalmomi a ware, wanda za'a iya rarraba shi azaman mara kyau, tsaka tsaki, da tabbatacce. Amma masu bincike daga Jami'ar Lancaster sun so su ga yadda za a iya amfani da waɗannan rarrabuwa da abubuwan da aka gano don kalmomi daban-daban ga sassa na rubutu da littattafai gaba ɗaya. Masu binciken sun bayyana cewa, 'rubutu ba kawai jerin kalmomi ba ne, kuma yadda aka haɗa waɗannan kalmomin, ko kuma mahallin da aka saka su a ciki, yana da muhimmanci. Sun nuna dukkan litattafan Harry Potter guda bakwai: Harry Potter da Dutse na Sorcerer (1997), Harry Potter da Chamber of Secrets (1998), Harry Potter da Fursunoni na Azkaban (1999), Harry Potter da Goblet na Wuta (2000), Harry Potter da Tsarin Phoenix (2003), Harry Potter da Yarima mai Jini (2005) da Harry Potter da Rukunin Mutuwa (2007). Nazarin ya nuna litattafan Harry Potter guda bakwai. Emma Watson (hagu) kamar yadda Hermione Granger da Daniel Radcliffe aka nuna a cikin fursunonin Azkaban. Daga wannan, suka zaɓi wurare 120,...
Masu binciken sun zabi sassan 120 daga cikin littattafai bakwai na Harry Potter. Wadannan sassan da aka karanta ta mahalarta yayin da a cikin wani fMRI scanner. Kowannensu an kimanta shi akan yadda mummunan ko tabbatacce, da kuma yadda suke da ban sha'awa. Bincike ya nuna wuraren da aka ba da fifiko sosai don motsa jiki ya kunna sassan kwakwalwa da ke da alaƙa da motsin rai, gami da amygdala na hagu.