This study investigated the effects of menstrual cycle phase on aggression in two groups of women, which differed in the severity of their self-reported perimenstrual symptoms. A low-and a high-symptom group were recruited using the Menstrual Distress Questionnaire (MDQ) to define the groups. Twenty
Effect of postnatal litter size on adult aggression in the laboratory mouse
β Scribed by Virginia Ryan; Dr. Francine Wehmer
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 477 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0012-1630
No coin nor oath required. For personal study only.
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## Abstract Eightyβthree C3H mice were reared in litters of 2 or 8 pups until weaning and, thereafter, in isolation or in bisexual groups of 8β10 animals in a Litter Size Γ Postweaning Experience Γ Sex factorial design. At 70β75 days of age, subjects were tested in a modified version of the openβfi
In polymorphic ants, such as Cataglyphis niger, sterile individual workers from the same nest show some degree of variation in size and/or morphology. We studied whether worker size and size difference between opponents had an effect on aggression during conspecific encounters. Although the capacity