The relationship between empathy and aggression is inconclusive, with substantial evidence revealing moderator effects of factors such as age, sex, and personality. This study examines whether sex differences or sex similarities stem from the relationship between empathy, personality, and aggression. There were 197 adolescents enrolled in secondary education (89 males and 108 females), who completed the Interpersonal Reactivity Index (IRI), the Eysenck Personality Questionnaire (EPQ), and the Buss and Perry Aggression Questionnaire (BPAQ). Females scored higher than males in empathy factors (fantasy, empathic concern, and personal distress), neuroticism, and in aggression (anger and hostility). Males and females showed similar outcomes in the association between perspective taking and personal distress with anger and hostility. Extraversion and neuroticism failed to explain additional variance in instrumental aggression (physical and verbal). Neuroticism, however, explained a meaningful larger amount of variance in the affective and cognitive components of aggression beyond empathy measures for both males and females, anger (9%) and hostility (15%), respectively. The findings suggest that, regardless of sex, empathy appears important for instrumental aggression (physical, verbal), whereas neuroticism is a robust predictor of affective and cognitive aggression (anger, hostility).

The Reading the Mind in the Eyes Test (RMET) is widely regarded as the primary instrument for measuring the Theory of Mind (ToM). However, its reliability, validity, and administration procedures, particularly across the lifespan and within adolescence, have been a subject of controversy. This study addresses these concerns using the Spanish version of the RMET with a Spanish sample of 162 late adolescents (93 women). The main findings indicate low reliability and questionable validity, casting doubt on the RMET’s suitability for assessing ToM during adolescence. The study discusses the administration of the instrument as a potential factor contributing to its psychometric deficiencies. Furthermore, it posits that the assumption of ToM as a singular, unitary construct may compromise the validity of the instrument.

Si el programa Excel, una aplicación distribuida por Microsoft Office para hojas de cálculo (Wikipedia, 2013), es utilizado de forma adecuada se puede convertir en una herramienta de provecho para la obtención de números irracionales trascendentes como π, el número áureo y el número de Euler. Números presentados en el libro: Matemáticas y la Imaginación (Kasner y Newman, 2007).En esta presentación se propone un método para la obtención del número π, que de acuerdo con la definición trabajada por Miller (Miller, Heeren, y Hornsby, 2006) es la razón de la circunferencia al diámetro de un círculo.