Recognition of static and dynamic facial expressions: Influences of sex, type and intensity of emotion

Ecological validity of static and intense facial expressions in emotional recognition has been questioned. Recent studies have recommended the use of facial stimuli more compatible to the natural conditions of social interaction, which involves motion and variations in emotional intensity. In this study, we compared the recognition of static and dynamic facial expressions of happiness, fear, anger and sadness, presented in four emotional intensities (25 %, 50 %, 75 % and 100 %). Twenty volunteers (9 women and 11 men), aged between 19 and 31 years, took part in the study. The experiment consisted of two sessions in which participants had to identify the emotion of static (photographs) and dynamic (videos) displays of facial expressions on the computer screen. The mean accuracy was submitted to an Anova for repeated measures of model: 2 sexes x [2 conditions x 4 expressions x 4 intensities]. We observed an advantage for the recognition of dynamic expressions of happiness and fear compared to the static stimuli (p < .05). Analysis of interactions showed that expressions with intensity of 25 % were better recognized in the dynamic condition (p < .05). The addition of motion contributes to improve recognition especially in male participants (p < .05). We concluded that the effect of the motion varies as a function of the type of emotion, intensity of the expression and sex of the participant. These results support the hypothesis that dynamic stimuli have more ecological validity and are more appropriate to the research with emotions.

El derecho a la educación como derecho social fundamental en sus tres dimensiones: educación primaria, secundaria y superior

En este artículo, se plantea el problema de si puede considerarse a la educación como un derechofundamental. Se analizan las implicaciones que ha tenido su no inclusión como tal derechoen la Constitución en el capítulo de los derechos fundamentales. Se estudian dos grandes tradicionessobre los derechos fundamentales: el neoliberalismo afirma que los derechos fundamentalesson únicamente los derechos liberales civiles y políticos. Y el liberalismo social concibe quelos derechos fundamentales son, además de los derechos liberales civiles y políticos, los económicosy sociales. En la parte final, se hace una reconstrucción del desarrollo del derechoa la educación en la jurisprudencia de la Corte Constitucional; termina con unas críticas alproyecto de reforma de la educación superior y unas sugerencias con miras a proponer a laeducación como un derecho fundamental.