Table 1.
Description of Red-Yellow-Green (RYG) scoring system.
RYG was used to assess the behavioral reaction of dogs during the three-step approach test.
Table 2.
Summary description of the subtests included in the reactivity test.
A more detailed description of the test protocol and scoring system is presented in Section 4 in S1 File.
Table 3.
Agreement between observers.
Table 4.
Estimates of fixed effects (i.e., day, reactivity test day (RT_day) and their interaction) on the approach test total score (AT_tot).
Fig 1.
Average approach test score (AT_tot: Circles and whiskers = mean and standard error bars) across the three test days with respect to the reactivity test administration day (RT_day).
Fig 2.
Dog response to the three phases of the approach test.
Approach (RYG_app), open door (RYG_open), and reach (RYG_reach) scores using the RYG (Red, Yellow, Green) method (see main text for details) across three consecutive days.
Table 5.
Dimensions extracted by the Exploratory Factor Analysis (EFA).
Table 6.
Main effect of tester and reactivity test day (RT_day) on the four main component scores extracted from the EFA.
Fig 3.
Standardized factor scores (generated by the EFA) for each of the dogs tested in four of our facilities are plotted against two of the main behavioral factor scores extracted by the EFA: Sociability (F2) and Boldness (F3). Higher values on the X-axis represent scores for more engaging and affiliative behaviors towards the experimenter; higher values on the Y-axis represent scores for more engaging and exploratory behaviors towards inanimate objects.
Fig 4.
Standardized factor scores (generated by the EFA) for each of the dogs tested in three of our facilities are plotted against two of the main behavioral factor scores extracted by the EFA: Food Motivation (F1) and Sociability (F2). Higher values on the X-axis represent higher propensity to take the treats offered during the test; higher values on the Y-axis represent scores for more engaging and affiliative behaviors towards the experimenter.