This chapter examines the significance of attitudinal research in understanding the dynamics of language contact situations in multilingual societies from a cross-disciplinary perspective. This chapter provides practical guidance for the study of language attitudes and ideologies in multilingual communities by discussing issues relating to research planning and design (e.g. identifying which languages are to be explored, whose language attitudes are to be examined in the community), as well as data analysis and interpretation (e.g. quantitative data collected through questionnaires or matched-guise techniques, or qualitative data through interviews or ethnographies). Other important considerations for attitudinal research in multilingual communities are also covered (e.g. the mismatch between positive attitudes towards a language or languages and language use, or links between language policies and language attitudes in language revitalisation projects). The main points made in the chapter are illustrated by means of two case studies. The first relates to language attitudes in multilingual classrooms and the second focuses on language attitudes and ideologies amongst new speakers of minority languages with a focus on Galician in the Autonomous Community of Galicia in north-western Spain.