The role of negative affects as mediators in the relationship between stress and mental health in Ecuadorian adolescents.

Background: Stress and negative emotions have adverse consequences for the mental health of adolescents, an area that deserves further examination. These attributes are associated with each other and regularly interact in different ways. The way they exert an influence can be both direct and indirect, so the general objective is to elucidate the potential mediating effect of negative affects in the relationship between stress and mental health in Ecuadorian adolescents.

Effects of bilingualism on white matter integrity in older adults.

Bilingualism can delay the onset of dementia symptoms and has thus been characterized as a mechanism for cognitive or brain reserve, although the origin of this reserve is unknown. Studies with young adults generally show that bilingualism is associated with a strengthening of white matter, but there is conflicting evidence for how bilingualism affects white matter in older age. Given that bilingualism has been shown to help stave off the symptoms of dementia by up to four years, it is crucial that we clarify the mechanism underlying this reserve.