Table 2 Social robot(s) and intervention characteristics

 Pet robots

18

  Paro

11 [42, 48, 49, 52, 62, 66, 69, 72, 82, 83]

  CuDDler

1 [71]

  Qooboo

1 [66]

  Joy for all cat

3 [44, 60, 80]

  Joy for all dog

2 [44, 60]

 Telepresence robots

8

  VGo

1 [74]

  Giraff

3 [69, 70, 74]

  Double

4 [38, 55, 75, 76]

 Socially assistive robots

33

  Betty / Matilda

2 [63, 64]

  Cafero

2 [45, 78]

  CompanionAble robot

2 [56, 85]

  Eva

1 [50]

  Guide

1 [78]

  Hobbit PT2

1 [39, 40]

  iRobiQ

2 [45, 77]

  Kompai mobile robot

3 [46, 88, 89]

  MARIO

4 [41, 53, 67, 90]

  MAX (SCITOS G3)

1 [57]

  Nao / Zora

3 [61, 68, 86]

  Pepper

4 [47, 54, 66, 87]

  Robovie 2

1 [84]

  Silbot-2

1 [43]

  STRANDS robot

1 [59]

  SYMPARNTER

1 [58]

  Tiago

1 [79]

  Violet’s Nabaztag

2 [51, 65]

 Less than 1 week

6 [53, 56, 57, 62, 81, 85]

 One to four weeks

14 [39,40,41,42, 52, 54, 58, 59, 65, 67, 68, 82, 87, 88]

 More than four to 12 weeks

23 [38, 45,46,47,48,49,50,51, 60, 64, 70,71,72,73,74,75,76, 78,79,80, 82, 86, 89]

 More than 12 weeks

6 [43, 61, 63, 77, 84, 91]

 No clear information

4 [53, 55, 66, 69]

 Full-time (or full day)

20 [38,39,40, 45, 51, 55,56,57,58,59,60, 65, 77, 79, 81, 82, 85, 89]

 Weekly intervention (ranging from 1 to 5 times weekly)

18 [41, 42, 47,48,49,50, 52,53,54, 61, 64, 67, 71,72,73, 75, 82,83,84,85,86,87,88]

 Others

2 [86, 91]

 No clear information

13 [43, 46, 53, 62, 63, 66, 68,69,70, 74, 76, 80, 84]