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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Int J Soc Robot. 2013 Dec 20;6(2):229–247. doi: 10.1007/s12369-013-0220-0

Table 9. Tasks for which older adults significantly preferred human assistance compared with no preference. Eleven tasks were significant at the p < .05 level but after controlling for Type 1 error using a Bonferroni correction, one task was significant at the p < .001 level.

Task M SD Mdn Range n p
Preparing meals/cooking 1.90 0.91 2 1–4 20 .001
Shaving 1.95 0.91 2 1–3 19 .001
Washing/combing hair 1.95 0.74 2 1–4 21 <.001
Entertaining guests 2.00 1.05 2 1–4 21 .001
Being entertained (e.g., playing games, dancing) 2.19 0.75 2 1–4 21 .001
Bathing 2.24 1.09 2 1–4 21 .007
Eating/feeding myself 2.29 0.90 2 1–4 21 .005
Calling family/friends 2.29 1.10 2 1–4 21 .010
Deciding what medication to take 2.38 1.16 2 1–4 21 .025
Getting dressed 2.38 0.92 2 1–4 21 .009
Brushing teeth 2.48 1.03 2 1–4 21 .032

M = participants' mean preference rating on a 5-point Likert-type scale (1 = only a human, 3 = no preference, 5 = only a robot). SD = standard deviation of preference ratings. Mdn = participants' median preference rating on a 5-point Likert-type scale. Range = the minimum and maximum Likert-type responses selected by participants. n = number of participants who rated a task. p = probability of type 1 error for a one-sample Wilcoxon sign-rank test comparing each task median to no preference (= 3)