( ( Without ( the ( ability ( to ( express ( their emotions ) ) ) ) ) ) ( , ( ( alexithymic patients ) ( ( ( ( have ( no insight ) ) ( into ( ( ( ( their ( mental state ) ) and ) ( , ( therefore , ) ) ) ( no ability ) ) ) ) ( to ( ( ( learn and ) grow ) ( from ( past experiences ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Without) (NP (DT the) (NN ability) (S (VP (TO to) (VP (VB express) (NP (PRP$ their) (NNS emotions))))))) (, ,) (NP (JJ alexithymic) (NNS patients)) (VP (VBP have) (NP (DT no) (NN insight)) (PP (IN into) (NP (NP (PRP$ their) (JJ mental) (NN state)) (CC and) (PRN (, ,) (ADVP (RB therefore)) (, ,)) (NP (DT no) (NN ability)))) (S (VP (TO to) (VP (VB learn) (CC and) (VB grow) (PP (IN from) (NP (JJ past) (NNS experiences))))))) (. .)))
Without the ability to express their emotions, alexithymic patients have no insight into their mental state and, therefore, no ability to learn and grow from past experiences.
(ROOT (S (NP (NNP Insight) (NNP learning)) (VP (VBZ is) (VP (VBN done) (PP (IN from) (NP (JJ past) (NNS experiences) (CC and) (NN reasoning))))) (. .)))