第一句 The idea(主语) is(系动词) that(引导表语从句) if (if引导表语从句中的条件从句)you can look into people's brains right before(引导状语从句) they make certain decisions,(逗号后面是表语从句的主句部分)you can get a handle on these two feelings and do a better job of predicting what(引导宾语从句,作动名词predicting的宾语) they are about to do.
第二句 I(主语) believe(谓语动词) anticipatory emotions(宾语从句主语) not only bias but drive(宾语从句谓语) decisions making(宾语从句的宾语).