This licentiate thesis examines mathematical activities in a preschool. More precisely, the aim is to create knowledge of how mathematical activities emerge and are constructed in children's interactions with each other and with their teachers. The empirical material consists of video recordings and field notes collected through participant observations during a six-month period in two preschool units for children 3-5 years old. Theoretically the study is based on an ethnomethodological (EM) and conversation analytic (CA) perspective. Video recordings were analyzed using conversation analytic methods, involving a close and detailed analysis of sources in situated mathematical activities. Through the use of an EM and CA perspective this study contributes with new theoretical and methodological approaches to research on mathematical activities in preschools. In the close analysis of children's actions in interaction, an active child with ideas, interests, and commitment emerges, a child who uses a variety of communicative resources when participating in mathematical activities. Whether it is the children or the teachers who initiate the activity the children are actively involved in the construction of the mathematical content. Geometric shapes and concepts as well as different aspects of children's number sense are a couple of the mathematical topics covered in the study. In the activities the childrens display knowledge of math verbally as well as with their bodies, something that is analyzed by using the concept of epistemic stance. The preschool teachers sometimes used occasions when children display specific knowledge as an educational resource for other children's learning. The study also shows that children as well as their teachers follow each other's initiatives in the activities. This means that children change and enlarge the mathematical content within the activities and that the teachers follow the children's initiative. Through this reciprocity the mathematical content of the activity is maintained.

When assessing the readability of a text it is helpful to consider all its interacting elements. This includes its syntactic complexity, but other aspects, such as that of cohesion, are no less important. The thesis explores how these are reflected in each other and in the readability of books in a dataset provided by the publisher Nypon och Vilja, which consists of easy-to-read books divided into six levels of readability. To provide additional nuance, the interrelated concepts of epistemic stance and narrativity are introduced for the purpose of deepening the analysis of the statistical findings. They also prove useful in further discussion surrounding complexity and cohesion as they relate to reading skill and knowledge asymmetries. Principal component analysis (PCA) is employed to uncover these statistical relationships on a broader scale, though more specific in-depth analysis are performed relating to certain metrics. While the findings have some support in literature, re-affirming the importance of narrativity for contextualizing cohesion, the clear link between higher complexity and less narrative text was not expected. Furthermore, the PCA indicates a more nuanced picture of referential cohesion and the use of its constituent metrics, depending both on narrativity and complexity.

This dissertation investigates the expression of the indirect evidential subdomain in two languages in contact, i.e. the northern variety of Central Aymara and the variety of Spanish spoken in La Paz (Bolivia). For this aim, the study uses first-hand data collected in La Paz and El Alto (Bolivia) during 2014 and 2015. Data was elicited through: the “Family Problems Picture” task (San Roque et al. 2012), formulated by the members of the Max Planck Institute for Psycholinguistics and created specifically for the activation of cognitive categories such as evidentiality and mirativity; the “Pear Story” designed for Wallace Chafe, professor at the University of California, to collect narrative texts that show how humans perceive, elaborate and verbalize experience; and, finally, personal narratives, traditional narratives and interviews. Thirty-three recordings (12h 48’) of 48 Spanish-Aymara bilingual speakers (17 males, age range: 18-64) were fully transcribed and annotated. The resulting corpus consists of 33 transcriptions of which 14 are in Aymara (c. 19 154 words), whereas 19 are in Spanish (c. 46 245 words). The dissertation is built around four research questions. First, the dissertation shows the functions of the forms identified in the data in both languages. The study identifies for each form both evidential and non-evidential functions. Indirect evidential functions are systematically analyzed and classified by combining Willett’s (1988) and Aikhnvald’s (2004) classifications. The analysis shows evidential functions of forms that have not been previously studied as such, i.e. digamos and diciendo in Spanish and sañani and sapxi in Aymara, but it also reveals unnoticed evidential functions for previously described forms. Second, the dissertation provides a clear view of the relationship between the evidential and the epistemic modal domain involved in the use of the forms identified. Two types of correlation are found. Both languages, indeed, show forms that only point out the way in which speakers acquired information and forms where the two domains overlap. Third, the dissertation investigates speakers’ epistemic stance, in terms of commitment, towards information involved in the use of the evidential forms identified. The study shows that the forms which convey merely evidential information express mainly a medium-high commitment degree, whereas the forms in which the distinction between the evidential and the epistemic modal domain is blurred indicate a low degree of commitment. Forth, the dissertation sheds light on the relationship between the expressions of the indirect evidential subdomain in the two languages. The study proposes a quantitative and qualitative analysis of the evidential types and subtypes in both languages. The results show a high degree of convergence between the two languages, suggesting also situations of influence of one language on the other.