A cikin ilimin halayyar mutum, yara suna da matakai biyu: preoperational mataki da kuma takamaiman aiki mataki. A cikin ilimin halayyar mutum, yara sun kasu zuwa matakai na ci gaba na jariri (koyon tafiya), farkon yara (yanayin wasa), tsakiyar yara (shekarun makaranta), da kuma matasa (samartaka ta hanyar post-samartaka). Abubuwa daban-daban na yara na iya shafar hali na mutum. Tambaya: Wace mataki yara ke shiga bayan jariri?
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