Search results for "Evolutionary Perspective"
showing 3 items of 3 documents
Cannabis, cerebro y adicción
2005
El compuesto psicoactivo de la cannabis sátiva, el í-9-tetrahidrocannabinol, ejerce sus efectos sobre el sistema nervioso central a través del receptor cannabinoide CB1. La localización presináptica del receptor CB I sugiere una función de modulación de la liberación de neurotransmisores a través de la denominada señalización retrógrada. El THC actúa en el sistema de recompensa cerebral de una manera muy similar a la de otras sustancias adictivas, incluyendo tanto la capacidad de generar tolerancia y síndro me de abstinencia como la interacción con otros sistema de neurotransmisión implica dos en el fenómeno de la recompensa. El consumo de cannabis provoca, al menos de manera transitoria,…
Gender differences in the jealousy-evoking effect of rival characteristics
2011
This study examines gender differences in the jealousy-evoking nature of rival characteristics in two Spanish-speaking countries (Argentina and Spain). A total of 388 Spanish students and 444 Argentinean students participated in the study. First, the cross-cultural validity of a Dutch scale containing 56 rival characteristics was examined. A factor analysis distinguished four dimensions (i.e., social power and dominance, physical attractiveness, physical dominance, and social-communal attributes). After the analysis, the final scale contained in total 24 items. Results showed that in Argentina and Spain combined, men experienced more jealousy than women when their rival was more physically …
Predictors of enhancing human physical attractiveness: Data from 93 countries
2022
People across the world and throughout history have gone to great lengths to enhance their physical appearance. Evolutionary psychologists and ethologists have largely attempted to explain this phenomenon via mating preferences and strategies. Here, we test one of the most popular evolutionary hypotheses for beauty-enhancing behaviors, drawn from mating market and parasite stress perspectives, in a large cross-cultural sample. We also test hypotheses drawn from other influential and non-mutually exclusive theoretical frameworks, from biosocial role theory to a cultural media perspective. Survey data from 93,158 human participants across 93 countries provide evidence that behaviors such as a…