The "self" refers to characteristics, _____, and beliefs people have about themselves

Among normally aging adults, infection or reactions to prescription drugs can result in ____

a. memory loss and confusion c. chronic illness b. Parkinson's disease d. schizophrenia

Critics of animal language research argue that animals ____

a. acquire only limited “language” for concrete objects b. ?do not follow all of the grammatical and syntactical rules of human language c. ?never move past the single word stage of human language development d. ?have never been shown to communicate, much less use language