title: Study of spontaneous behavior in squirrel monkey groups: observation techniques, recording devices, numerical evaluation and reliability tests.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D003201:Computers; D005260:Female; D000882:Haplorhini; D008297:Male; D008433:Mathematics; D008722:Methods; D011676:Punched-Card Systems; D012725:Sexual Behavior; D012919:Social Behavior; D013637:Tape Recording; D013997:Time Factors