Analysing Visual Information (Colour, Symbol) of Waste Recycling Through the Principles of Gestalt Theory: Closure, Similarity and Continuation

This study provides an insight into the visual information (colours, symbols) of waste classification based on the three principles of closure, similarity and continuation of Gestalt theory. A field survey of Xiamen University Town in China and a survey of 1,000 local and international university students in the area were used to understand the level of awareness of visual information on waste recycling and segregation. The study found that the current level of awareness of visual classification information (colours, symbols) in the Xiamen University Town urban area and among students is low. Visual messages must convey accurate and standardised information such as colours and symbols. In addition, the purpose of this study was to illustrate the need for accuracy in visual information. This study concludes the need for uniform colour and symbol standards for waste recycling and segregation under the Gestalt theory to help achieve SDG goal 12, responsible consumption and production, as this study highlights the potential ripple effect on future stakeholders, especially considering the international mobility of university students, who epitomise global diversity. As users travelled across countries, ambiguous visual messages about waste classification became a key issue in responding to UN advocacy for a sustainable future. Addressing and correcting these visual discrepancies is critical to effective waste management strategies on a global scale.