Inventory Personality Inventory (EPI) kayan aikin tantancewa ne na tunani wanda ke auna halayen mutum bisa ka'idar da masanin ilimin halayyar dan adam Hans Eysenck ya gabatar. Ƙididdiga ta ƙunshi takardar tambayoyin da ke tantance manyan nau'o'i uku na mutumtaka: haɓakawa / gabatarwa, neuroticism / kwanciyar hankali, da psychoticism / superego. Ana amfani da EPI a ko'ina a cikin asibiti da saitunan bincike don auna halayen mutum kuma an same shi amintacce kuma yana aiki a yawancin karatu.