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.
( ( ( Robinson and ) Godbey ) ( ( say ( ( our pace ) ( is fast ) ) ) . ) )
(ROOT (S (NP (NNP Robinson) (CC and) (NNP Godbey)) (VP (VBP say) (SBAR (S (NP (PRP$ our) (NN pace)) (VP (VBZ is) (ADJP (JJ fast)))))) (. .)))