On the same observation day, we calculated aggression frequencies (bouts/hour) before and after the occurrence of the first play bout.
The neurobehavioral alterations quantified in the studies they reviewed include activity level, aggression, mounting frequency, and completed intromissions.
As predicted, with increasing patch perimeter, the ability of the large (dominant) fish to defend the patch decreased, as reflected by a decrease in the frequency of aggression and the proportion of the aggression by the dominant.
To test whether workers responded aggressively toward treated colonymates, we compared the frequency of aggression in each treatment to the negative controls.
She is as comfortable synthesising scientific data on how infant boys and girls are responded to by carers (they display aggression with the same frequency, but carers are more responsive to this behaviour in boys than girls) as she is unpicking the media's representation of women (experts in the media are 80% men; case studies and victims are 79% women).
As predicted, the frequency of aggression and size variation within groups decreased and the number of fish feeding at any particular time increased as patch size increased.
We tested the predictions that the frequency of aggression, degree of resource monopolization and individual size variation within groups would decrease as patch size and predation risk increased.
The actual number of birds at a food patch at a given time was more important in determining the frequency of aggression at the food patch than the number of birds present in an enclosure or previous GS experience.
To test the hypothesis that the frequency of aggression in broiler chickens will be lower in response to increased crowding and perch availability, groups of broiler were observed from 2 to 6 weeks of age.
Our results further support the relationship between social instability and frequency of aggression found in pigtailed macaques.
