We don't have synonyms for mentalistic yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are centralistic, mentalist and mentalists.
(adj) :
(philosophy, psychology) Characterized by appeal to mental states (such as beliefs, desires, intentions, feelings) in describing, explaining, or predicting behaviour or other phenomena; employing or pertaining to vocabulary or predicates about such states (often contrasted with behaviorist or purely physicalist approaches).
(adj) :
Of or relating to mentalism or mentalists.
(adj) :
(philosophy, psychology) Characterized by appeal to mental states (such as beliefs, desires, intentions, feelings) in describing, explaining, or predicting behaviour or other phenomena; employing or pertaining to vocabulary or predicates about such states (often contrasted with behaviorist or purely physicalist approaches).
(adj) :
Of or relating to mentalism or mentalists.