Extended Data Table 4 Results for linear mixed model assessing whether calls are specific to individual receivers or the type of relationship between caller and receiver

From: African elephants address one another with individually specific name-like calls

  1. Each observation was a pair of calls and the response variable was rank-transformed proximity score. Same Caller Pair Type = whether the two calls in a pair had the same caller and receiver (reference level) or same caller and different receivers with the same type of relationship to the caller; Same Context = whether the two calls in a pair had the same behavioral context (reference level = no); Same Date = whether the two calls in a pair were recorded on the same day (reference level = no); Pair ID = unique combination of callers and receivers (random effect). Pairs of calls recorded from different groups and levels of Pair ID that only occurred once were excluded (n = 1105 call pairs with same receiver, 179 with different receivers who had the same type of relationship to the caller). P-values are two-tailed.