Un instrumento para evaluar la eficacia de los procedimientos de inducción de estado de ánimo: la "Escala de Valoración del Estado de Ánimo" (EVEA)
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Publication date
2001
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Universidad de Huelva
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Abstract
Se presenta un instrumento de autoinforme, la "Escala de Valoración del Estado de Ánimo" (EVEA), desarrollado para medir estados de ánimo transitorios en los estudios que utilizan procedimientos de inducción de estado de ánimo (PIEAs). La EVEA fue aplicada a 402 estudiantes universitarios en varias investigaciones sobre cognición y trastornos emocionales (Sanz, 1994a,b,c, 1997a,b; Sanz y Dobson, 1994). El análisis psicométrico de estos datos reveló que las subescalas de la EVEA (ansiedad, depresión, hostilidad y alegría) muestran índices adecuados de consistencia interna (coeficientes alfa entre ,88 y ,93), fiabilidad test-retest (correlaciones a los 7 y 25 minutos entre ,55 y ,88), validez factorial (cuatro factores que se corresponden con las subescalas), validez discriminante (diferenciación entre estados de ánimo negativos y entre éstos y los positivos), validez de criterio (correlaciones con medidas de sintomatología depresiva}, y sensibilidad para detectar a nivel individual y grupal cambios en el estado de ánimo. Finalmente, a partir de estos índices, se proponen criterios para el análisis individual de los cambios en estado de ánimo producidos por los PIEAs.
This paper presents a self-report instrument, the "Scale for Mood Assessment" (in Spanish: "Escala de Valoración del Estado de Ánimo"; EVEA), designed for measuring transitory moods in the context of experimental studies using mood induction procedures (MIPs). The EVEA was administered to 402 undergraduates in several studies on cognitive processes in emotiona disorders (Sanz, 1994a,b,c, 1997a,b; Sanz & Dobson, 1994). Psychometríc analysis of these data revealed that the four EVEA subscales (depression, anxiety, hostility and elation) showed adequate indexes of interna! consistency (alpha coefficients between .88 and .93), test-retest reliability (7- and 25-minutes correlations between .55 and .88), factor validity (four factors matching the subscales), discriminant validity (differentiation among different negative moods, and between negative and positive moods), criterion validity (correlations with measures of depressive symptomatology), and sensitivity to detect momentary mood changes both on an individual level and on a group level. Finally, critería based on psychometric properties of EVEA are suggested to analyze individually mood changes induced by MIPs.
This paper presents a self-report instrument, the "Scale for Mood Assessment" (in Spanish: "Escala de Valoración del Estado de Ánimo"; EVEA), designed for measuring transitory moods in the context of experimental studies using mood induction procedures (MIPs). The EVEA was administered to 402 undergraduates in several studies on cognitive processes in emotiona disorders (Sanz, 1994a,b,c, 1997a,b; Sanz & Dobson, 1994). Psychometríc analysis of these data revealed that the four EVEA subscales (depression, anxiety, hostility and elation) showed adequate indexes of interna! consistency (alpha coefficients between .88 and .93), test-retest reliability (7- and 25-minutes correlations between .55 and .88), factor validity (four factors matching the subscales), discriminant validity (differentiation among different negative moods, and between negative and positive moods), criterion validity (correlations with measures of depressive symptomatology), and sensitivity to detect momentary mood changes both on an individual level and on a group level. Finally, critería based on psychometric properties of EVEA are suggested to analyze individually mood changes induced by MIPs.