Brainse den tsiceolaiocht ina ndeantar staidear ar fhorbairt bhitheolaioch, shoisialta is intleachtach haoine on am roimh bhreith is i rith na beatha. Tugtar aird ar leith ar fhorbairt phaisti oga mar a mbionn na hathruithe tuisceana an-soileir. Leagtar beim ar fheidhm na forbartha, na hathruithe a bhionn coitianta do gach duine ag staideanna eagsula na beatha. [1]