Figure 4:
Effects of current pair-housing condition (intermittent: “IP”; continuous: “CP”) on (A) grooming and (B) other types of affiliation. Point size scales with number of observations (grooming: 1 to 44 observations; other affiliation: 1 to 51 observations). Thick horizontal lines indicate the fitted model estimates for each condition when all other predictors and number of observation intervals are at their mean.