An index of aggression was constructed as the unweighted sum of "Attack", "Darting" and "Humming" that each bee performed during all the observations throughout the entire experiment (12 observations for each group).
In the second step, standardized indexes of verbal aggression and job resources were entered.
Biting pain was positively correlated with an index of overall aggression (P = 0.002).
Circulating tumour cells (CTCs) have been detected in the peripheral blood of cancer patients and provide an index of disease aggression in patients with distant metastasis (Dawood et al, 2008).
The local recurrences after BCS require the subsequent surgical treatment (more frequently, mastectomy) neutralizing the reached cosmetic result, and being the indices of the tumor aggression and a high degree of the distant metastasis availability [ 10– 10].
The data showed a generally modest but statistically significant correlation between the PCL-R and indexes of aggressive institutional behavior during the first year of incarceration: The correlation between PCL-R score and physical aggression was 0.18 (not significant) but 0.28 for verbal aggression (significant).
Codes for aggression scoring methods are as follows: a = aggression index, b = presence of aggression, c = percentage rejected by guards, d = percentage rejected, e = aggression towards dead workers, f = % aggression in 1 to 1 assays, g = # attacks per trial, h = time based aggression scale, I = aggressive vs. non aggressive interactions, m = number of aggressive ants.
Behavioural assays were performed within and between each of the six subcolonies (15 intercolonial combinations) using two different indices (Aggression Index AI and Mortality Index MI).
Aggression indices of isolated vs. non-isolated individuals were compared using a PERMANOVA with a two-factor nested design as described above.
For the externalizing index, questionnaires assessing the levels of aggression, delinquency, symptoms of psychopathy, oppositional defiant disorder, attention deficit hyperactivity disorder, and conduct disorder were included.
