Investigating the dimensions of positive design in the context of lighting units and interior spaces

In recent years, fulfilling user emotions, needs, expectations through products and making users happy has been the focus of design. In design literature, by considering happiness and subjective well-being, researchers explore how products can improve the quality of life of people. In addition, the relation between the product design and subjective well-being has also been explored. Positive design, which is rooted to the positive psychology, aim to improve people' subjective well-being through products. Although in literature, there are several studies that explore the dimensions of positive design, a study that explore the dimensions of positive design through daily-use products is missing. In this context, this thesis focuses on undestanding the dimensions of positive design through lighting products, which can be listed within the products that are used for both satifying lighting needs and creating ambience. At the same time, this thesis is looking for lighting product experience within a given usage space. To achieve this, an emprical research is conducted with 40 participants, asking them to experience and the 5 selected products that have different features in terms of material, form etc. After that, through semi-structured interviews, participant's ideas about products, their experiences with products, and the product and space relations are analyzed by considering positive design dimensions. Finally, this thesis is expected to contribute to both product design and interior design literature in terms of investigating the positive design dimensions through lighting units. Keywords: Positive Design, Product Design, Product Experience, Subjective WellBeing.