11-21) In intrasubject research, to be considered a single-case experiment, the design must demonstrate covariation of variables, causal time sequence, and a. strong, positive correlations among all conditions. b. statistically significant F ratios. c. elimination of other plausible causes. d. repetition of conditions using a large number of subjects. 11-22) In intrasubject research, the ABA design differs from the ABAB design in that the latter design contains an additional __________ phase. a. baseline b. intervention c. reversal d. none of the above 11-23) In intrasubject research, __________ designs typically have an advantage over __________ designs, because the former category contains a reversal phase. a. AB; BA b. AB; ABA c. ABA; AB d. ABBA; BAAB 11-24) Multiple-baseline designs have four important characteristics: 1) there are no reversal phases; 2) the introduction of the intervention is staggered; 3) a baseline phase can overlap an intervention phase; and 4) a. they are considered single-case experiments. b. they are carried out by using large samples of subjects. c. they are simpler to conduct compared to AB designs. d. only a single baseline measure becomes necessary. 11-25) When employing reversal designs in intrasubject research, two problems often occur: 1) the effect of the researcher’s intervention may not be reversible; and 2) a. these designs require many between-subject manipulations b. implementing these AB designs is often expensive. c. it may be unethical to withdraw a beneficial treatment. d. it is difficult to recruit large numbers of subjects required in these designs. 11-26) Dr. Chauncey is interested in carrying out an intrasubject design, but he is concerned that the target behavior that he is planning to change in his subject may not return to baseline levels when the intervention is withdrawn.   Consequently, Dr. Chauncey should not use a __________ design. a. single-subject b. correlational c. descriptive d. reversal 11-27) In intrasubject research strategies, multiple-baseline designs can be conducted across a. behaviors. b. subjects. c. situations. d. all of the above 11-28) Melissa is conducting an intrasubject investigation where she is examining a young boy’s performance in baseball. To study the boy, Melissa observes the boy batting, fielding, and running, and she monitors the performance of each before she intervenes with her new athletic training program. It appears that Melissa is carrying out a multiple-baseline, across- __________ study. a. behaviors b. subjects c. situations d. none of the above 11-29) Tom is conducting an intrasubject investigation where he is examining a young girl’s performance in soccer. To study the girl, Tom observes her playing soccer at her home field, at an away field, and at an indoor arena, and he monitors the girl’s performance at each location before he intervenes with his new athletic training program. It appears that Tom is carrying out a multiple-baseline, across- __________ study. a. behaviors b. subjects c. situations d. none of the above 11-30) The multiple-baseline across- __________ design uses individual AB designs within one subject in a particular setting. a. behaviors b. subjects c. situations d. none of the above