Figure 4: Ratios of looking time towards the face area to total looking time towards the combined face and object areas.
From: Humans and chimpanzees attend differently to goal-directed actions
Goal-directed (human actor): goal-directed action by a human (Experiment 1), goal-directed (chimpanzee actor): goal-directed action by a chimpanzee (Experiment 2), non-goal-directed (human actor): non-goal-directed action by a human (Experiment 3). Note that it is not appropriate in a strict sense to compare the data across all three conditions, as the stimuli used in the three experiments were different. We used data from adults in the case of human participants, because human infants did not participate in the Experiments 2 and 3. The ratio of looking time to the face area by chimpanzees was fairly constant across the three experiments. Error bars represent s.e.m.
