Menstrual symptoms and up-down vectors

Multiple studies considered the somatic symptom correlates of up-down asymmetries in women. In four samples, involving a total of 81 women, menstrual symptoms were significantly linked with the up-down distortion of the space surrounding self. In addition, there were borderline relationships between menstrual symptoms and other indices of up-down asymmetry. The findings suggested a possible link between menstrual symptoms and concerns about possessing versus not possessing power. Over-all, the results support previous studies indicating that spatial sets reflect important attitudes or conflicts that seem to play a role in somatic symptomatology. However, they point up the importance of considering sex differences.