This article presents the Spanish adaptation of the Affective Norms for English Words (ANEW; Bradley & Lang, 1999). The norms are based on 720 participants' assessments of the translation into Spanish of the 1,034 words included in the ANEW. The evaluations were done in the dimensions of valence, arousal and dominance using the Self-Assessment Manikin (SAM). Apart from these dimensions, five objective (number of letters, number of syllables, grammatical class, frequency and number of orthographic neighbors) and three subjective (familiarity, concreteness and imageability) psycholinguistic indexes are included. The Spanish adaptation of ANEW can be downloaded at www.psychonomic.org.

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This experiment studies the role of the conditioned response (CR) in explaining the unconditioned response (UR) diminution phenomenon in heart rate (HR) classical conditioning. In order to analyze the implication of the different CR components on UR diminution, the interstimulus interval (ISI) was varied. Sixty volunteer subjects received discrimination training with an interval between conditioned stimulus (CS) and unconditioned stimulus (US; aversive white noise) of 8 s. After the discrimination training phase, subjects were randomized into three different groups according to an ISI of 1, 5, or 8 s. The subjects of each group were then tested with five presentations of CS+/US. The results showed that UR amplitude as well as the deceleration immediately before this response (pre-UR deceleration) were significantly lower in the 5 s and 8 s ISI groups than in the 1 s ISI group. In addition, UR amplitude and pre-UR deceleration were statistically the same in the 5 s and 8 s ISI groups. These findings are discussed in terms of the adaptative role of the CR in classical conditioning.

Previous research on electrodermal conditioning suggests that the conditioned diminution of the unconditioned response (VR) has an associative basis. The aim of this experiment was to tesí whether Ibis phcnomcnon also occurs in heart rate (HR) classical conditioning. For tbk purpose. a diffcrential classical conditioning was performed. The conditioned sil muí ¡ (CSs) were geometrical shapes (the CS± was a square and Ibe CS-was a triangle) displayed on a computer .screen and a burst of wbite noise was used as unconditioned shimulus (VS). For analysis uf thc conditiuned response (CR) components, an inlerval between CS±and US of 8 seconds was used. Mier iba acquisition pbase. participanis were tested using írials wirb iba VS preceded eitber by a CS-t-, a CS-, or a neutral stimulus (a circle). Tbe resulís showed conditioned diniinution of the UR and suggest that 11w second beart rate deceleration component (D2) is responsible for tbe occurrence of Ibis pbenorneLw)n. Kay' a'ord.s: alasgícal aanthtioning, haart rata, unconditianad rasponsa, acmditionacl rasponsa Investigaciones previas en condicionamiento electrodérmico indican que la disminución condicionada de la respuesta incondicionada (Rl) posee una base asociativa. El objetivo de este experimento fue estudiar si este fenómeno ocurre también en el condicionamiento clásico de la lasa cardíaca (TO). Para ello se llevó a cabo un condicionamiento clásico diferencial. [os estímulos condicionados (ECs) eran figuras geométricas (el EC+ era un cuadrado y el EC-un triángulo) mostradas en la pantalla de un ordenador y como estímulo incondicionado (El) se utilizó una explosión de ruido blanco. Para permitir el análisis de los componentes de la respuesta condicionada