Score direct social investigation, resident-intruder aggression rate, group SEM, and CSV export for rodent social behavior studies.
Enter event durations from resident-intruder or freely interacting dyads. Social investigation is the sum of nose-to-nose, anogenital sniffing, and allogrooming time divided by session duration.
| Animal | Group | Session (s) | Nose-nose (s) | Anogenital (s) | Allogroom (s) | Aggression bouts | Social % | Aggression/min | Remove |
|---|---|---|---|---|---|---|---|---|---|
| 24.0% | 0.10 | ||||||||
| 22.8% | 0.00 | ||||||||
| 11.7% | 0.50 | ||||||||
| 10.5% | 0.60 |
| Animal | Group | Social investigation % | Aggression/min |
|---|---|---|---|
| WT-1 | WT | 24.00 | 0.10 |
| WT-2 | WT | 22.83 | 0.00 |
| KO-1 | KO | 11.67 | 0.50 |
| KO-2 | KO | 10.50 | 0.60 |
When to use
Do not use for
Resident-intruder and dyadic designs have different motivational structure. Analyze them as distinct paradigms.
A 5-minute and 10-minute session can produce similar bout counts with different rates. Keep duration fixed or use rate-normalized metrics.
Define whether chasing, boxing, biting, and mounting count as aggression before the first video is scored.
Social investigation percent is calculated as (nose-to-nose time + anogenital sniffing time + allogrooming time) / session duration x 100. Resident-intruder aggression rate is aggression bouts / session minutes. Group summaries use animal-level means and SEM.
Last validated 2026-04-30. Calculations are designed for planning and documentation support; verify procurement decisions against manufacturer specifications or institutional SOPs.
ConductScience Social Interaction Analyzer (v1.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/social-interaction-analyzer
This tool performs descriptive calculations on user-entered behavioral scores. It does not replace protocol-specific exclusion rules, aggression welfare endpoints, or statistical analysis.
Direct social interaction assays measure how much time a test animal spends investigating another animal. Resident-intruder designs emphasize territorial and aggressive behavior. Dyadic designs emphasize reciprocal interaction in a neutral or familiar arena.
The analyzer sums nose-to-nose, anogenital sniffing, and allogrooming durations for each animal or dyad. That total is divided by session duration to report social-investigation percent. In resident-intruder mode, aggression bouts are divided by session minutes.
Keep lighting, arena, partner novelty, resident isolation period, and scoring definitions constant across groups. Blind manual scorers to genotype or treatment when feasible. Pair with video scoring when behaviors are brief or overlapping.
Arena setup for resident-intruder and dyadic social interaction testing
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