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. Author manuscript; available in PMC: 2019 May 10.
Published in final edited form as: Appl Dev Sci. 2017 Feb 23;21(3):200–216. doi: 10.1080/10888691.2016.1243988

Table 3:

Research study design and assessment types, categorized by species and sorted by sample size

First author (Year) N Study design Assessment Type Raters/Informants Ethics Review
 Effect Size  Survey  Interview  Observation  Physiology  Research team  Parent  Teacher  Self  Blinded  Human  Animal

HORSES

Gabriels (2015) 116 Randomized control x x - x - x x - - x x -
Borgi (2015) 28 Randomized control - x - x - x x - - x x -
Steiner (2015) 26 Randomized control (ABA) - x - - x x - - - - x -
Lanning (2014) 25 Non-randomized control - x - - - - x - x - x -
Ward (2013) 21 Repeated measures (ABAB) - x - - - - x - - - x -
Garcia-Gomez (2014) 16 Non-randomized control x x x - - - x x - - - -
Tabares (2012) 8 Pre-post - - - - x - - - - - x -
Ajzenman (2013) 7 Pre-post x x - x - x x - - - x -
Jenkins (2013) 7 Single-subject (AB) - x - x - x x x - - - -
Ghorban (2013) 6 Pre-post - x - - - - x - - - - -
Chen (2015) 4 Single-subject (AB) - - - - x - - - - - x x
Holm (2014) 3 Single-subject (ABA) - - - x - x x - - - x -
DOGS

Fung (2014) 10 Randomized control x - - x - x - - - x x x
Grigore (2014) 3 Single-subject (ABAC) x - - x - x - - - - x -
Stevenson (2015) 3 Single-subject (A) - x - x - x - x - x - -
Funahashi (2014) 2 Single-subject (A) - - - x x x - - - - x -
Fung (2015) 1 Single-subject (ABA) - - - x - x - - - x - -
GUINEA PIGS

O’Haire (2015) 99 Repeated measures (AB) x x - - x - - - x - x x
O’Haire (2014) 64 Repeated measures (AB) x x - - - - x x - - x x
O’Haire (2013) 33 Repeated measures (ABA) x - - x - x - - - x x x
DOLPHINS

MdYusof (2012) 15 Pre-post x x - - - - x - - - - -
Salgueiro (2012) 10 Pre-post-follow-up - x - x - x x - - - x x
COMPANION ANIMALS

Carlisle (2014) 70 Qualitative - - x - - - x - - - x -
Carlisle (2015) 70 Non-randomized control - x - - - - x - x - x -
Wright (2015) 62 Non-randomized control x x - - - - x - - - x -
Grandgeorge (2012) 40 Non-randomized control - - x - - - x - - - x -
Bystrom (2015) 13 Qualitative - - x - - - x - - - x -
SERVICE ANIMALS

Burgoyne (2014) 164 Non-randomized control - x - - - - x - x - x -