Comprehensive language training is a universal demand that involves the mastery of different languages, including those linked to technologies, digitalization, and social networks. Language teaching includes addressing aspects such as new digital languages, also in the context of the Spanish language (Cremades et al., 2021). In this context, the study by Pérez-Rodríguez et al. (2019) on media competence of Spanish adolescents in Secondary Education concludes that further research is needed on “students' ways of reading and writing, including their strategies for producing texts, and a deeper understanding of the types of texts they use to communicate in today's liquid society” (Pérez-Rodríguez et al., 2019: 45).

Linguistic diversity on the Internet is a global and multilingual phenomenon (Danet & Herring, 2007) that has been enhanced by the generalization of instant messaging applications on smartphones (Yus, 2022). Interactive digital communication has favored the creation of a new written norm that has received different denominations, including “textese”, “CMC language”, “chatspeak”, or “digital” (Turner, 2010; Johnson, 2015). These new forms of writing are conditioned by the influence of technology, social networks, and digitization, are characterized by the oralization of written code (Turner, 2010) and “continue to evolve and converge and, to some extent, approximate face-to-face communication with all its immediacy, complexity, and variety” (Thurlow, 2018: 7-8). Previous research has analyzed, in detail, the new digital writing systems of languages around us, such as English (Grace & Kemp, 2014; Wood et al., 2014; Kemp et al., 2021), Spanish (Vázquez-Cano et al., 2015; Gómez-Camacho et al., 2018), French (Bernicot et al., 2014; Cougnon et al., 2017), and German (van-Dijk et al., 2016; Verheijen et al., 2020), among others. Some studies on minority languages identify global features shared by many languages, also in the use of pragmatic and emotional resources; for example, Cenoz and Bereziartua (2016) for Basque, or Finkelstein and Netz (2023) for Modern Hebrew.

The features that characterize the digital writing norm that employs nonstandard spelling (among other elements) have been named textisms from the studies of De-Jonge and Kemp (2012), whose use is favored by technological advances (Kemp & Grace, 2017; Yus, 2022). Undoubtedly, emoticons are the maximum exponent of the new global language in terms of expression of feelings (Li et al., 2022), although with marked nuances in their meanings and uses in different languages (Kejriwal et al., 2021). Even if the use of contractions and abbreviations to “reduce the length of words in order to be able to send text messages in a quick and cheap manner” is a global textism for all languages (De-Jonge & Kemp, 2012: 49-50), Grace and Kemp (2014) oppose contractive textisms (shortening the original words) and expressive textisms (adding more text in order to provide additional information). In Yus' opinion, “expressive textisms occur due to the user's communicative or expressive needs (e.g., to convey intonation, feelings, emotions, etc.) and thus communicate an additional layer of information that is relevant in itself” (Yus, 2022: 60). Gómez-Camacho et al. (2018) classify textisms in the context of the Spanish language into three levels: graphophonemic, lexical-semantic, and multimodal (Table 1), although these textisms may appear simultaneously in the same element.

The graphophonemic level includes textisms based on the discrepancy between phoneme and grapheme, such as the phenomena of shortening or reducing the number of words, the use of non-normative graphemes or the repetition and omission of graphemes, punctuation marks, or capital letters. Textisms at the lexical-semantic level include the use of dialectalisms, the creation of new words, and the use of foreign words. Finally, the multimodal level contains the use of emoticons, images, videos, audio, or stickers, among other elements.

These new languages pose a conflict between what Androutsopoulos calls popular and academic conceptions of language, although this phenomenon should be understood as “a process of change facilitated and enabled by digital media, but materialized and carried out by networked writers in late-modern and post-standardized societies” (Androutsopoulos 2011: 147). From an educational point of view, Gleason already drew attention to the hybrid nature of current adolescent literacy practices “while young people are concerned with traditional dimensions of literacy, such as grammatical correctness and proficient spelling and punctuation, they are also concerned with emergent practices, such as engaging in relevant youth practices that are multimodal, spatial, and social” (Gleason, 2016: 33).

Interaction between learning the cultured linguistic norm and the use of the interactive digital norm raises a new perspective on the existing relationship between interactive digital writing in literacy and linguistic skills when typing on the virtual keyboard of smartphones. The latest studies by Finkelstein and Netz (2023), Androutsopoulos and Busch (2021), Verheijen and Spooren (2021), Kemp et al. (2021) or Núñez-Román et al. (2021) on different languages respond to the same concern as the classic studies by Wood et al. (2014), De-Jonge and Kemp (2012) or Bernicot et al. (2014) on English and French: the possibility that the use of textisms by adolescents in instant messaging apps negatively affects the formal registers of language.

WhatsApp is the most widely used instant messaging application both globally and in the context of the Spanish language (Statista, 2022), and it very significantly favors young people to broaden their intercultural and interlinguistic awareness from a local perspective (Takkac, 2019). Pérez-Rodríguez et al. (2022) describe the impact of networks such as Twitter on communication and explore the communicative and multimodal skills of creators (Youtubers and Instagrammers) as new spaces are opening up for citizen representation and participation.

The analysis of adolescent and youth chats on WhatsApp to determine the interaction between the use of textisms and linguistic competence in a broad sense has been the starting point for the latest studies of different languages published on the subject (Gómez-Camacho et al., 2018; Rosenberg & Asterhan, 2018; Escobar-Mamani & Gómez-Arteta, 2020; Verheijen & Spooren, 2021; Pérez-Sabater, 2022; Tragant et al., 2022; Finkelstein & Netz, 2023). In general, scientific literature has not identified a negative relationship between the use of textisms in instant messaging applications and the orthographic competence of adolescent speakers.

Zebroff's exhaustive review on the impact of texting on adolescent literacy concludes that it is still “largely unknown whether texting has a positive, negative, or neutral effect on adolescent literacy” (Zebroff, 2018: 353) so more studies are needed in this field. In the context of education in Spain, the analysis of Ibarra-Rius et al. (2018) finds that communicative situations in a formal education setting occur outside the daily lives of students and calls for the incorporation of interactions with smartphones into the educational environment. This study responds to this demand in the context of the Spanish language.

The present study explores whether the use of textisms in WhatsApp messages of adolescents in the last two years of compulsory education in Spain is related to the appearance of spelling mistakes in their academic texts. Consequently, the objectives of this research are as follows:

We start from the hypothesis that the use of textisms in the sample does not negatively influence spelling competence, but rather favors the acquisition of linguistic competence in adolescent students, as suggested by the studies of Lanchantin et al. (2015), van-Dijk et al. (2016), Verheijen et al. (2020) and Verheijen and Spooren (2021). In line with the findings of Bernicot et al. (2014) and Plester et al. (2009), among others, we expect that some textisms of the graphophonemic level, especially those referring to auxiliary signs in Spanish writing, present a differentiated behavior in their relationship with misspellings of the same nature. If we find that there is a relationship between the interactive digital norm and the academic norm, it will be necessary to reformulate the concept of spelling competence in the context of compulsory education, assuming that digital competence (INTEF, 2022) involves the production of texts in a digital environment “through strategies such as multimodality, hypertextuality, and interaction” (Rodrigo-Segura & Ibarra-Rius, 2022: 42).

This research uses a descriptive method, since its main objective is to describe the characteristics of communication through the WhatsApp social network in a population of adolescents, in an objective and verifiable way (Colás, 1998). Specifically, it is an analytical study, based on directed content analysis (Hsieh & Shannon, 2005), which aims to discover the textisms used in written communication through WhatsApp.

First, it is worth highlighting the characteristics of the writings hosted on social networks and academic texts to serve as a reference for the study. On the one hand, regarding the characteristics of the texts written on WhatsApp, the results reveal that the mean number of words per text is 79.79 words (SD=43.82), ranging from a minimum of 3 to 246. The mean number of interventions of the WhatsApp text, i.e., each time the subject has sent a message in their app, is 17.05 times (SD=5.94), ranging from a minimum of 2 to a maximum of 36. The total number of textisms of WhatsApp writings is 27.73 (SD=18.55), ranging from 0 textisms to 117.

On the other hand, among the characteristics of academic written texts, it stands out that they are productions integrated by an average of 171.94 words (SD=82.30), the minimum number of words in these texts is 35 and the maximum 647. The average number of spelling mistakes is 4.76 (SD= 5.86), ranging from texts with no mistakes to some with a maximum of 44. The most common type of mistake is the error of diacritical marks, whose average is 4.07 of missing accents per text, ranging from texts with no mistakes to some with a maximum of 38. There is no other type of error that stands out with an average of more than 1. The presence of errors in phonemes /b/, /g/, /j/, /y/, /z/, /s/, /k/, /rr/ in all academic texts has been analyzed, and they concluded that all these errors are below an average frequency of occurrence of less than 1.

The results of this research provide evidence on the use of the digital norm in WhatsApp chats of Andalusian adolescents in the third and fourth years of Compulsory Secondary Education and its relationship with the standard orthography of Spanish. More than a third of the words that make up the WhatsApp corpus analyzed in the study presented some textisms, so we can affirm that the use of textisms is the main feature of the digital writing of the adolescent students participating in the study, and that they used a different writing norm, adapting to the demands of interactive digital communication with respect to formal academic texts (van-Dijk et al. 2016; Verheijen & Spooren, 2021). The average number of textisms in WhatsApp in the sample is much higher than the number of misspellings in school texts, so the same speakers who follow the academic norm in their formal texts prefer the digital norm in text messages on their smartphones. In our opinion, this confirms that textisms are intentional discrepancies with the academic norm in the digital context that cannot be considered as misspellings caused by ignorance of the Spanish language (Cremades et al., 2021; Gómez-Camacho & Gómez-del-Castillo, 2017).

The interactive digital norm in WhatsApp in the corpus analyzed preferentially uses textisms involving the shortening of words, the omission of accents and the omission of punctuation marks and spaces between words. Our analyses reveal that, in the sample, textisms by shortening are the most notable feature of the interactive digital norm (Plester et al., 2009; Vázquez-Cano et al., 2015; Yus, 2022). However, textisms by repetition and the use of non-normative lexical units confirm that the interactive digital norm is not a form of economy in language, but an alternative form of expression that integrates different language varieties and different languages in the digital environment (De-Jonge & Kemp, 2012; van-Dijk et al. 2016). Participants show written language varieties in WhatsApp, as well as in their orthographic competence, so our results agree with those of Pérez-Rodríguez et al. (2019) in the sense that Spanish adolescents in Compulsory Secondary Education cannot be considered as a homogeneous group of digital natives.

The use of non-normative graphemes has turned out to be insignificant in the results of this study. This finding is relevant because these textisms of the graphophonemic level are mostly related to oral features of the diatopic varieties in the Andalusian speech of the participants in the study. We refer singularly to textisms related to nonstandard graphemes x, s, z, e and y that could be related to phenomena typical of Spanish varieties such as seseo (pronunciation of the Spanish letter “c” and “z” as the letter “s”), lisping and yeísmo (pronunciation of the Spanish letter “ll” as “y”) (Narbona et al., 2022). Our study does not confirm that the reproduction of diatopic varieties of the Spanish language is one of the characteristics of the interactive digital norm used by adolescent learners on WhatsApp (Mancera, 2016; Martín, 2016; Flores-Salgado & Castineira-Benitez, 2018). The limitation of the sample to speakers from Andalusia does not allow us to extrapolate this conclusion to Spanish as a whole, which highlights the interest in extending this study in a pan-Hispanic context.

In our opinion, the academic texts analyzed were characterized by correct spelling in the context of compulsory education in Spain, with the exception of errors in the use of the tilde. The descriptive and correlational analysis of errors and textisms confirms that the use of textisms in the sample does not impair the linguistic competence of the participating students in terms of written expression. These results are consistent with previous research findings in other languages (Plester et al., 2009; Wood et al., 2014; Verheijen & Spooren, 2021; Verheijen et al., 2020) and in the Spanish language (Gómez-Camacho & Gómez-del-Castillo, 2017). Even Textisms of lexical-semantic level and multimodal level considered as a whole could be related to the development of writing competence and spelling, although this is not a conclusion of our study (Martínez-Parejo, 2016).

Considered independently, the omission of the tilde as textism or its omission in academic texts offers very interesting results in the relationship between the digital norm and the academic norm in Spanish writing. There is a significant correlation between textism and misspelling in the case of the written accent, which can be interpreted in the sense that this textism is detrimental to the students' spelling competence, although our data do not allow us to affirm this categorically. This relationship does not appear in previous literature, although it is consistent with the findings of previous studies of French and English (Bernicot et al., 2014; Zebroff, 2018). A limitation of this study is the impossibility to discern in WhatsApp interventions when a written accent was intentionally omitted (textisms) versus those that were not written due to inattention or ignorance (misspellings), based on the hypothesis that misspellings can also be committed in interactive digital communication.

In our opinion, it is necessary to reformulate the concept of spelling competence in the context of compulsory education of adolescents, exclusively linked to the relationship between phonemes and graphemes in the Spanish language (Rodríguez-Ortega, 2015) and in other languages (Pinto et al., 2015). Orthographic competence is conceived as a set of alphabetic, orthographic, and morphological writing skills (Von-Suchodoletz et al., 2017) that does not include textisms of the interactive digital writing standard. The Framework of Reference for Teaching Digital Competence (INTEF, 2022) links the very object of learning literacy and digital competence as part of the basic literacy of all citizens in the compulsory educational stages. In the same sense, Rodrigo-Segura & Ibarra-Rius (2022) insist on the need for the development of digital competences of teachers and students to improve teaching in the area of Language and Literature Didactics. The use of the digital standard as a resource for the teaching of spelling in Compulsory Secondary Education (ESO) is one of the most suggestive possibilities to which this study points towards, and opens the way for, further research.

We agree with Pérez-Rodríguez et al. (2019) on the need to establish synergies between school texts and instant messaging, integrating learning that takes place outside the school context through the same applications or devices. It is paradoxical that the digital standard used in WhatsApp is identified as an opportunity for the acquisition of adolescents' orthographic competence in various languages (Gómez-Camacho & Gómez-del-Castillo; 2017; Escobar-Mamani & Gómez-Arteta, 2020; Verheijen et al., 2020; Kemp et al 2021; Finkelstein & Netz, 2023), but it has not been integrated into it.

A new conception of orthographic competence must recognize the iconic and interactive nature of digital writing (Pérez-Rodríguez et al., 2022), as well as the influence of the interface on the code (Yus, 2022). From an educational point of view, we agree with the proposals made by Grace and Kemp (2014) for English, and Bernicot et al. (2014) for French, in the sense that it is also necessary to discriminate some types of textisms in the Spanish language. Our results confirm that contractive and expressive textisms (Grace & Kemp, 2014), and some textisms that alter the relationship between phonemes and graphemes because they interact differently with traditional orthography, should be considered in a differentiated way. In our opinion, textisms due to written accent suppression are the most relevant example that the relationship between digital norm and spelling competence depends on the nature of textisms and misspellings, at least in adolescent students.

The results of Androutsopoulos and Busch's (2021) research offer a very interesting perspective on the role of punctuation marks in digital communication of German adolescents in WhatsApp, which could be applied to the Spanish language in further studies. In summary, we agree with the conclusion of Verheijen et al. (2020: 21) that “young people should not be discouraged from using digital writing but taught to alternate effectively between formal and informal registers”, integrating textisms into the acquisition of communicative and orthographic competence of students in compulsory education. (1)