Leanne's friends love her 60-year-old mother, liz, who is very warm and friendly. in fact, liz encourages leanne to bring over her friends for cocktail parties or cookouts every weekend that she is free (i. e., when she's not involved with a book club, painting class, or yoga retreat). leanne's father dreads it when her mother invites leanne's friends over. he is reserved, uncomfortable with people he does not know well, and prefers quiet evenings of reading. the big five trait that best describes this aspect of his personality is

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is: