We examined the categorical nature of emotion word recognition. Positive, negative, and neutral words were presented in lexical decision tasks. Word frequency was additionally manipulated. In Experiment 1, "positive" and "negative" categories of words were implicitly indicated by the blocked design employed. A significant emotion-frequency interaction was obtained, replicating past research. While positive words consistently elicited faster responses than neutral words, only low frequency negative words demonstrated a similar advantage. In Experiments 2a and 2b, explicit categories ("positive," "negative," and "household" items) were specified to participants. Positive words again elicited faster responses than did neutral words. Responses to negative words, however, were no different than those to neutral words, regardless of their frequency. The overall pattern of effects indicates that positive words are always facilitated, frequency plays a greater role in the recognition of negative words, and a "negative" category represents a somewhat disparate set of emotions. These results support the notion that emotion word processing may be moderated by distinct systems. Barsalou, 1983) and whether a category is established implicitly or explicitly, for example, via the context afforded by a list of related items or by an encompassing label (e.g., Bazzanella & Bouquet, 2011;Becker, 1980;Schacter & Badgaiyan, 2001), has implications for the amount of benefit conferred on its members.To investigate the categorical nature of emotion word processing, we designed a series of lexical decision experiments that all additionally manipulated word frequency, in particular, because of its differential effect on responses to negative words. In the prior emotion × frequency lexical decision studies, positive and negative words were intermixed with neutral words within a single block. In our first study (Experiment 1), we examined whether the same pattern of effects would be obtained under conditions of implicit Emotion words and categories 5 categorical priming -when positive and negative words were presented in separate blocks.In the subsequent two studies, we examined the effect of explicit category priming, comparing responses to words belonging to the neutral category of "household" items to those within the category of either "positive" (Experiment 2a) or "negative" (Experiment 2b) items. In the Kuchinke et al. (2007) and Scott et al. (2009) Taken together, the results of these experiments should begin to address the role that categorical priming plays in experimental research into emotion word processing.
Experiment 1 MethodParticipants. Twenty-four members of the University of Glasgow community (16 female; mean age 25) received compensation for their participation. All were native English speakers, were right-handed, had normal or corrected-to-normal vision, and were naïve as to the purpose of the experiment.Apparatus. The experiment was run on a Mac G4 using PsyScope 1.2.5 PPC software. Stimuli were presented ...