In chapter 12 of Lord of the Flies, what do Sam and Eric imply about Roger? How have we seen evidence of this change in him?

SAm an Eric imply that Roger is a full blown socio-path. Roger takes delight in hurting kids. We have seen this earlier with Roger throwing stones at Littluns but barely missing. Now any "hangups" with civilized behaviour are gone. Roger has realized he can harm others with no consequences.