( and ( , ( ( individuals ( with ( mental disorders ) ) ) ( first ( ( evident ( in ( infancy ( , ( ( childhood or ) adolescence ) ) ) ) ) . ) ) ) ) )
(ROOT (S (ADVP (CC and)) (, ,) (NP (NP (NNS individuals)) (PP (IN with) (NP (JJ mental) (NNS disorders)))) (ADVP (RB first)) (VP (VBN evident) (PP (IN in) (NP (NN infancy) (, ,) (NN childhood) (CC or) (NN adolescence)))) (. .)))
and, individuals with mental disorders first evident in infancy, childhood or adolescence.
(ROOT (S (NP (DT An) (NN individual)) (VP (VP (VBZ grows) (ADVP (RB quickly))) (CC and) (VP (VBZ develops) (NP (JJ new) (NNS abilities)) (PP (IN during) (NP (PRP$ their) (NN infancy) (CC and) (NN childhood))))) (. .)))
An individual grows quickly and develops new abilities during their infancy and childhood.