Data associated with “Winner effects and switching assessment strategies facilitate fast and frugal decisions in territorial contests” published in Animal Behaviour. Described below are column values for three accompanying data tables. ---------------- contest_results.csv - contains information about contest outcome, escalation level, duration, and contestant measurements. Description of Columns: Category: “sm” for size-matched, “rand” for random focalID: ID of the focal individual opponentID: ID of the opponent focal_regen: 1 denotes focal individual collected missing snapping claw, 0 denotes focal individual collected with claws intact oppon_regen: 1 denotes opponent individual collected missing snapping claw, 0 denotes opponent individual collected with claws intact contest_ID: ID of both individuals in the contest. Focal individual ID followed by underscore then opponent ID focal_win: 1 means focal individual won contest, 0 means opponent won contest sex: contest between females or males focal_car_length: carapace length of focal individual in mm focal_rost_to_tels: rostrum to telson length of focal individual in mm focal_chela_size: length of focal individual’s snapping claw in mm opp_car_length: carapace length of opponent individual in mm opp_rost_to_tels: rostrum to telson length of focal individual in mm opp_chela_size: length of opponent individual’s snapping claw in mm diff_car_length: focal carapace length minus opponent carapace length diff_rost_to_tels: focal rostrum-to-telson minus opponent rostrum-to-telson diff_chela_size: focal snapping claw length minus opponent snapping claw length rel_car_length: 1 - (opponent carapace length / focal carapace length) rel_rost_to_tels: 1 - (opponent rostrum-to-telson length / focal rostrum-to-telson length) rel_chela_size: 1 - (opponent snapping claw length / focal snapping claw length) avg_car_length: mean carapace length of contestants (mm) winner_car_length: carapace length of the individual that won the contest (mm) loser_car_length: carapace length of the individual that lost the contest (mm) contest_duration: time between contest initiation and termination (seconds) initiation_time: time spent in the initiation phase (seconds) presnapping_time: time spent in the pre-snapping phase (seconds) snapping_time: time spent in the snapping phase (seconds) num_snaps: total number of snaps fired during contest date: mm/dd/yy formatted date of contest trial small_win: 1 means the individual with smaller carapace length won the contest, 0 means the individual with larger carapace length won the contest heur_rel_car_length: 1 - (smaller individual’s carapace length / larger individual’s carapace length) beyond_initiation: 1 means the contest escalated to either the pre-snapping or snapping phase, 0 means the contest ended during the initiation phase snapping: 1 means contest entered the snapping phase, 0 means contest terminated prior to the snapping phase small_car_length: carapace length of the smaller individual large_car_length: carapace length of the larger individual ---------------- sm_behaviours.csv - ordered series of behavioral transitions for all size-matched contests contest_id: contest ID corresponding to the identically named column in contest_results.csv. focal individual ID followed by opponent ID Subject: behavior of the focal individual or of the opponent individual B1: behavior of interest B2: behavior that follows B1 sex: contest between males or females ---------------- rm_behaviours.csv - ordered series of behavioral transitions for all randomly matched contests contest_id: contest ID corresponding to the identically named column in contest_results.csv. focal individual ID followed by opponent ID Subject: behavior of the focal individual or of the opponent individual B1: behavior of interest B2: behavior that follows B1 sex: contest between males or females