The reason, Robinson and Godbey suggest, is that our pace of life is faster.
( ( The reason ) ( ( , ( ( ( ( Robinson and ) Godbey ) suggest ) , ) ) ( ( is ( that ( ( ( our pace ) ( of life ) ) ( is faster ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NN reason)) (PRN (, ,) (S (NP (NNP Robinson) (CC and) (NNP Godbey)) (VP (VBP suggest))) (, ,)) (VP (VBZ is) (SBAR (IN that) (S (NP (NP (PRP$ our) (NN pace)) (PP (IN of) (NP (NN life)))) (VP (VBZ is) (ADJP (JJR faster)))))) (. .)))
 Robinson and Godbey say our pace is fast compared to int he 1950's.
( ( ( Robinson and ) Godbey ) ( ( say ( ( our pace ) ( ( is fast ) ( compared ( to ( ( int he ) ( 1950 's ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Robinson) (CC and) (NNP Godbey)) (VP (VBP say) (SBAR (S (NP (PRP$ our) (NN pace)) (VP (VBZ is) (ADVP (RB fast)) (VP (VBN compared) (S (VP (TO to) (VP (VB int) (NP (PRP he)) (S (NP (NNP 1950) (POS 's))))))))))) (. .)))