Chiyeso chachipatala ndi chimodzi chomwe chikuphatikizapo anthu omwe akufuna kutenga nawo mbali ndikuyesa kuyankha mafunso okhudza mtundu wa mankhwala. Izi zikhoza kukhala mankhwala kapena mtundu wina wa mankhwala, monga kusintha kwa zakudya kapena kusisita.
Blumb Double
Ponena za mayesero a chipatala, kawiri khungu kamatanthauza kuti odwala kapena ochita kafukufuku samadziwa yemwe akupeza placebo ndi amene akulandira mankhwala.
Chifukwa odwala sakudziwa zomwe akupeza, chikhulupiriro chawo chokhudza zomwe zidzachitike sichidzasokoneza zotsatira. Chifukwa chakuti ochita kafukufuku sakudziwa, sangathe kuwalimbikitsa odwala pa zomwe akupeza, ndipo sangawononge zotsatira mwazinthu zawo zokhazikika zomwe zidzakhale.
Ngati ochita kafukufuku amadziwa yemwe akulandira chithandizo koma osagwiritsa ntchito, amatchedwa kuyesa kopanda maso.
Placebo ndi Control Groups
Malo a placebo ndi chinthu chopanda mphamvu (nthawi zambiri mapiritsi a shuga) operekedwa kwa wodwala m'malo mwa mankhwala.
Mu mayeso osokoneza bongo, gulu lolamulira limapatsidwa placebo pamene gulu lina limapatsidwa mankhwala (kapena mankhwala ena) akuphunziridwa. Mwanjira imeneyi, ofufuza akhoza kuyerekezera kuti mankhwalawa ndi othandiza bwanji pa malowa.
Kulamulidwa ndi malowa kumatanthauza gulu lolamulira limene limalandira malo a placebo. Izi zimasiyanitsa ndi maphunziro omwe amangowapatsa odwala mankhwala ndi kulemba zotsatira.
Mayendedwe Otsutsa Okhala ndi Malo Awiri Amodzi
Choncho, kafukufuku wothandizira odwala awiri omwe amachititsa kuti munthu asayambe kupatsidwa mankhwala, ndizofukufuku wokhudza zachipatala omwe amachititsa anthu omwe alibe mbali kuti adziwe kuti akupeza chithandizo chiti ndipo malo omwe amapatsidwa mankhwalawa amaperekedwa kwa gulu lolamulira.
Asanafike pakadali pano, kafukufuku amapanga maphunziro a zinyama, mayesero am'zipatala osagwirizanitsa gulu lolamulira, komanso maphunziro osadziwika okha.
Maphunziro apamwamba kwambiri amakhalanso osinthika, kutanthauza kuti maphunzirowa amaperekedwa mobwerezabwereza ku placebo ndi magulu othandizira. Mndandanda wa zilembo za DBRCT umagwiritsidwa ntchito pophunzira.