Subject Pronoun Expression (SPE) has been extensively studied in monolingual and bilingual varieties of Spanish using the variationist framework. The goal of these studies has been to examine the linguistic and extra-linguistic factors that condition the expression and the omission of personal subject pronouns. Nonetheless, to date, there is no study of SPE in the Spanish of Equatorial Guinea, the only African country where it is an official language, and the single country where Spanish is exclusively a second language (L2). This dissertation fills this gap in the literature by accounting for SPE in Equatoguinean Spanish.

The research questions guiding this study concern the rates of Subject Pronoun Expression, its conditioning factors, and universal accounts of L2 acquisition, in particular, the Interface Hypothesis (IH). The study had 30 participants from Malabo, who took part in sociolinguistic interviews. These interviews were transcribed and analyzed using the mixed effects software Rbrul. Along the lines of the literature reviewed, the linguistic factor groups studied were grammatical person and number, reference, reflexivity, verb type, and ambiguity. By the same token, the extra linguistic factors analyzed were age, sex, education, native language (L1), and speaker as a random factor.

The results indicate that the Equatoguinean variety of Spanish has one of the lowest pronoun rates (19.1%), a finding that goes against the predictions of the IH. With regard to the linguistic factor groups that condition Subject Pronoun Expression, Equatoguinean Spanish shows an unorthodox ranking: grammatical person and number, ambiguity, verb class, and reference. Interestingly, the low ranking of reference gives support to the IH, which argues that L2 speakers have problems with constraints like the switch of the reference in subjects because it integrates discourse and pragmatic interfaces. The only significant extra-linguistic factor was education, whereas speakers’ L1 exerted no effect on SPE. Individual speaker was a significant random factor group, indicating that variation is great even in speakers with comparable education.

In sum, this study of a unique speech community provides new information on SPE of L2 Spanish. It also contributes to the fields of language contact, language variation, and second language acquisition.

This study investigates the effectiveness of the use of Concept-Based Instruction (CBI) to facilitate the acquisition of Spanish mood distinctions by second semester second language learners of Spanish. The study focuses on the development of Spanish mood choice and the types of explanations (Rule-of-Thumb vs. Concept-based) used by five students before and after being exposed to Concept-Based Instruction regarding the choice of Spanish mood following various modalities .The students in this study were presented with a pedagogical treatment on Spanish mood choice that included general theoretical concepts based on Gal'perin's (1969, 1992) didactic models and acts of verbalization, which form part of a Concept-Based pedagogical approach. In order to ascertain the effectiveness of the use of concept-based tools to promote the ability to use Spanish mood appropriately over time, a pre and post-test was administered to the group in which students were asked to respond to prompts containing modalities that elicit the indicative and subjunctive moods, indicate their level of confidence in their response, and verbalize in writing a reason for their choice. The development of these abilities in learners exposed to CBI was assessed by comparing pre and post-test scores examining both forms and explanations for the indicative and subjunctive modality prompts given. Results showed that students continued to rely on Rule-of-Thumb explanations of mood choice but they did expand their use of conceptually-based reasoning. Although the quantitative and qualitative analyses of the results indicate that most students did improve their ability to make appropriate mood choices (forms and explanations) after the CBI treatment, the increased use of conceptually-based explanations for their mood choices led to both correct and incorrect responses.

This study analyzes the Spanish of native speakers from Northern Mexico in order to ascertain the presence of the voiced labiodental fricative segment [v] when the sound is orthographically represented with the letter `v'. The study examines some of the internal and external factors that predict the labiodental fricative pronunciation of the letter `v'. This study is based on the theoretical framework of phonology as described by Piñeros (2009) and Hualde (2005). The study examined all instances in the data when a sound is written with the letter `v' to investigate if the sound is pronounced as the faithful voiced plosive bilabial allophone [b] of the phoneme /b/, the spirantized allophone [β], or the voiced labiodental fricative allophone [v]. Four speakers, a male and a female with an incomplete secondary education, and a male and a female with a graduate level education participated in the study. All participants were interviewed for one hour, read a word list, and read a paragraph provided by the researcher. The researcher coded the data using the phonetic analysis software Praat and all data were statistically analyzed using the multivariate software analysis program Goldvarb X in order to investigate the presence of the voiced labiodental fricative allophone [v] and predict what internal and external factors most influence its production. From this study it is obvious that the most influential factor favoring the realization of the labiodental fricative allophone [v] is orthography. When the phonetic segment was represented with the grapheme , the phonetic realization was more likely to be the labiodental fricative [v]. The level of education of the speaker and the formality of the stylistic setting were also determined to be influential factors. Speakers with a higher degree of education and stylistic settings with a higher degree of formality favored the realization of the labiodental fricative [v]. With regards to the internal factors, rather than external factors, a preceding phonological segment of a vowel or fricative dental [s] also favored the realization of the labiodental fricative [v].