Rhotic Variation in Costa Rican Spanish

The class of sounds classified under the umbrella term “rhotic” demonstrate considerable variability across, languages, dialects, and speech styles. This is no exception in Spanish, where rhotics have received considerable attention. Among dialects of Spanish, the pronunciation of rhotics in Costa Rican Spanish is a highly salient feature of this variety, where the standard trill /r/ and tap /ɾ/ are often assibilated or realized as fricatives. A number of studies have examined Costa Rican rhotics from both phonological and phonetic perspectives, yet the results of these studies have been inconclusive. Notably absent from these studies are acoustic analyses of rhotic production, instead relying on impressionistic transcriptions which risk glossing over phonetic detail. This pilot study revisits the question of rhotic variation in Costa Rican Spanish by analyzing five sociolinguistic interviews with native speakers of Costa Rican Spanish. Using acoustic analyses of rhotic tokens, I propose a rhotic inventory for this variety which includes approximant and fricative variants in addition to the standard tap and trill. Additionally, I propose a potential explanation for the distribution of rhotic variants through an Articulatory Phonology framework, suggesting that rhotic variation can be explained as a result of gestural weakening and co-articulation. The study presents preliminary conclusions regarding socioeconomic factors, suggesting areas for future research, including the effect of age and gender on rhotic variation. Overall this work contributes to the understanding of the Costa Rican variety of Spanish, considering both linguistic and extralinguistic factors as potential predictors of variation.